Section1 Java language overview

11 minutes03 seconds

Section2 Java language cross-platform principle

09 minutes08 seconds

Section3 Overview of JDK and JRE)

03 minutes30 seconds

Section4 JDK download process diagram

04 minutes39 seconds

Section5 JDK installation process diagram

04 minutes50 seconds

Section6 Illustration of the uninstallation process of JDK

04 minutes22 seconds

Section7 Introduction to Java development tools and introduction to JDK

04 minutes55 seconds

Section8 Writing and running the first HelloWorld case

06 minutes37 seconds

Section9 Summary of common problems in development

15 minutes36 seconds

Section10 Why configure the path environment variable

05 minutes46 seconds

Section11 How to configure Path environment variable 1

04 minutes44 seconds

Section12 How to configure Path environment variable 2

05 minutes24 seconds

Section13 The role of classpath and its configuration

06 minutes34 seconds

Section14 The difference between path and classpath

00 minutes49 seconds

Section15 Notepad++ installation and configuration

06 minutes55 seconds

Section16 Use Notepad++ to develop programs and compile and run them

01 minutes53 seconds

Section1 Overview and use of keywords

08 minutes02 seconds

Section2 Overview and composition rules for identifiers

08 minutes22 seconds

Section3 Common naming rules for identifiers

10 minutes43 seconds

Section4 Overview of annotations and their classification

09 minutes33 seconds

Section5 HelloWorld case added to annotated version

06 minutes31 seconds

Section6 The role of comments

06 minutes08 seconds

Section7 Overview and use of constants

09 minutes30 seconds

Section8 Overview of base systems and illustrations of binary, octal and hexadecimal systems

12 minutes17 seconds

Section9 Representation forms of different base data

06 minutes47 seconds

Section10 Conversion diagram from arbitrary base to decimal

10 minutes17 seconds

Section11 Exercises from arbitrary base to decimal

02 minutes49 seconds

Section12 Conversion diagram from decimal to arbitrary base

06 minutes52 seconds

Section13 Exercises from decimal to arbitrary base

03 minutes13 seconds

Section14 Fast base conversion method

11 minutes51 seconds

Section15 Explanation of the original code's complement

13 minutes57 seconds

Section16 Practice of inverting and complementing the original code

03 minutes02 seconds

Section17 Overview and format of variables

07 minutes25 seconds

Section18 Overview and classification of data types

08 minutes44 seconds

Section19 Define variables of different data types

09 minutes20 seconds

Section20 Things to note when using variables

10 minutes03 seconds

Section21 Data type conversion default conversion

07 minutes58 seconds

Section22 Illustration of variables of different data types participating in operations

07 minutes02 seconds

Section23 Data type conversion cast

05 minutes31 seconds

Section24 Questions about forced conversion

04 minutes15 seconds

Section25 What is the difference between adding variables and adding constants? Interview questions

09 minutes07 seconds

Section26 How to calculate the result after forced conversion of data overflow

08 minutes44 seconds

Section27 Character data participates in operations

04 minutes53 seconds

Section28 Strings participate in operations

03 minutes54 seconds

Section1 Several minor issues added to data types

14 minutes50 seconds

Section2 Basic usage of arithmetic operators

09 minutes46 seconds

Section3 Usage of arithmetic operators ++ and --

11 minutes33 seconds

Section4 Exercises with arithmetic operators ++ and --

05 minutes40 seconds

Section5 Various uses of arithmetic operator +

03 minutes56 seconds

Section6 Basic usage of assignment operators

05 minutes37 seconds

Section7 Assignment operator interview questions

04 minutes12 seconds

Section8 Basic usage of comparison operators and their precautions

09 minutes11 seconds

Section9 Basic usage of logical operators

12 minutes52 seconds

Section10 The difference between logical operators && and &

07 minutes24 seconds

Section11 Basic usage of bit operators 1

11 minutes06 seconds

Section12 Characteristics of bitwise XOR operator

03 minutes04 seconds

Section13 Bit operations interview questions

09 minutes52 seconds

Section14 Basic usage of bit operators 2 and interview questions

13 minutes09 seconds

Section15 Basic usage of ternary operator

06 minutes59 seconds

Section16 Exercises with the ternary operator

10 minutes26 seconds

Section17 An explanation of the basic format of keyboard entry

07 minutes14 seconds

Section18 Keyboard entry exercise 1

06 minutes31 seconds

Section19 Keyboard entry exercise 2

04 minutes49 seconds

Section20 sequential structure statement

04 minutes44 seconds

Section21 Select structure if statement format 1

08 minutes08 seconds

Section22 Things to note when choosing a structure if statement

09 minutes02 seconds

Section23 Select structure if statement format 2

05 minutes16 seconds

Section24 Exercises for selecting structure if statement format 2

06 minutes03 seconds

Section25 Conversion problem between format 2 of if statement and ternary

08 minutes07 seconds

Section26 Select structure if statement format 3

16 minutes26 seconds

Section27 Exercises for selecting structure if statement format 3

06 minutes11 seconds

Section28 Exercises for selecting structure if statement format 3

12 minutes41 seconds

Section29 Nested use of selection structure if statements

04 minutes49 seconds

Section1 The format and explanation of the select structure switch statement

08 minutes28 seconds

Section2 Basic use of the switch statement in the selection structure

09 minutes57 seconds

Section3 Things to note when choosing a structural switch statement

10 minutes39 seconds

Section4 Select structure switch statement exercise 1 to see the program writing results

01 minutes26 seconds

Section5 Select structure switch statement exercise 2 multiple choice questions

08 minutes25 seconds

Section6 Select structure switch statement exercise 3 expression is a string

04 minutes51 seconds

Section7 Respective usage scenarios of the selection structure switch and if statements

08 minutes28 seconds

Section8 Loop Structure Loop Statement Overview

04 minutes13 seconds

Section9 The format and basic use of the loop structure for statement

08 minutes43 seconds

Section10 Things to note about the loop structure for statement

01 minutes37 seconds

Section11 Exercise 1 of loop structure for statement to obtain data

04 minutes10 seconds

Section12 Exercise 2 Summing Thoughts of Loop Structure for Statement

07 minutes55 seconds

Section13 Exercise 3 of even sum of loop structure for statement

05 minutes00 seconds

Section14 Exercise 4 factorial of loop structure for statement

03 minutes23 seconds

Section15 Exercise 5 Narcissus of loop structure for statement

11 minutes40 seconds

Section16 Exercise 6 of improved version of palindrome number for loop structure for statement

03 minutes58 seconds

Section17 Exercise 7 Statistical Thoughts on Loop Structure for Statement

04 minutes40 seconds

Section18 Exercise 8 of the loop structure for statement while taking the remainder problem

05 minutes22 seconds

Section19 The format and basic use of the while statement in the loop structure

05 minutes49 seconds

Section20 Exercise 1 Summation Thoughts of Loop Structure While Statement

03 minutes59 seconds

Section21 Exercise 2 Statistical Thoughts on Loop Structure While Statement

04 minutes26 seconds

Section22 The difference between loop structure while statement and for statement

07 minutes25 seconds

Section23 Practice Everest of loop structure while statement

07 minutes44 seconds

Section24 The format and basic use of the loop structure do...while statement

05 minutes41 seconds

Section25 Differences between three types of loop statements in loop structures

03 minutes20 seconds

Section26 Loop structure loop precautions - infinite loop

05 minutes32 seconds

Section27 Loop structure loop nesting outputs stars in 4 rows and 5 columns

10 minutes55 seconds

Section28 Loop structure loop nesting output equilateral triangle

06 minutes31 seconds

Section29 Loop structure multiplication table

07 minutes33 seconds

Section30 Control jump statement break statement

11 minutes17 seconds

Section31 Control jump statement continue statement

05 minutes24 seconds

Section32 Control jump statement return statement

03 minutes44 seconds

Section33 The combination of while statement and break uses Xiaofang to save money

10 minutes18 seconds

Section1 Method overview and format description

10 minutes18 seconds

Section2 Method definition summation case

06 minutes57 seconds

Section3 Method calls with clear return values

07 minutes31 seconds

Section4 Method call diagram

07 minutes00 seconds

Section5 Exercise 1 of the method to get the larger of two numbers

07 minutes02 seconds

Section6 Method Exercise 2 Compare two numbers for equality

05 minutes40 seconds

Section7 Method Exercise 3: Obtain the maximum value of three numbers

05 minutes56 seconds

Section8 Notes on methods

04 minutes27 seconds

Section9 Method call Definition and call of void type method

08 minutes37 seconds

Section10 Exercise 4 of the method outputs a star based on the number of rows and columns

03 minutes41 seconds

Section11 Method Exercise 5: Output the corresponding multiplication table based on keyboard input

03 minutes19 seconds

Section12 Overview and basic usage of method overloading

11 minutes00 seconds

Section13 Method overloading practice comparing data for equality

04 minutes40 seconds

Section14 Array overview and definition format instructions

09 minutes24 seconds

Section15 Initialization of arrays Dynamic initialization

12 minutes44 seconds

Section16 Memory allocation in Java and the difference between stack and heap

15 minutes13 seconds

Section17 Memory diagram of array 1 an array

08 minutes02 seconds

Section18 Array memory diagram 2 two arrays

09 minutes09 seconds

Section19 Array memory diagram 3 three arrays

14 minutes30 seconds

Section20 Initialization of arrays, static initialization and memory map

07 minutes17 seconds

Section21 Two common minor problems with array operations: out-of-bounds and null pointers

05 minutes17 seconds

Section22 Array operation 1 traversal

13 minutes31 seconds

Section23 Array operation 2 obtains the maximum value

11 minutes35 seconds

Section24 Array operations 3 reverse order

11 minutes29 seconds

Section25 Array operations 4 table lookup method

03 minutes52 seconds

Section26 Array operations 5 basic search

10 minutes39 seconds

Section27 Overview of two-dimensional arrays and explanation of format 1

15 minutes11 seconds

Section28 Memory diagram of two-dimensional array format 1

05 minutes28 seconds

Section29 Explanation of two-dimensional array format 2

07 minutes53 seconds

Section30 Memory diagram of two-dimensional array format 2

07 minutes47 seconds

Section31 Explanation of two-dimensional array format 3

06 minutes30 seconds

Section32 Memory diagram of two-dimensional array format 3

06 minutes28 seconds

Section33 Two-dimensional array exercise 1 traversal

10 minutes24 seconds

Section34 Two-dimensional array exercise 2 summation

05 minutes29 seconds

Section35 Two-dimensional array exercise 3 Yang Hui triangle

12 minutes17 seconds

Section36 Question 1: Parameter passing issues and illustrations in Java

15 minutes46 seconds

Section37 Thinking Question 2 Analysis of Encryption Issues

09 minutes16 seconds

Section38 Question 2 Implementation of the code for encryption issues

10 minutes43 seconds

Section39 Question 2: Code improvements for encryption issues

09 minutes30 seconds

Section1 Introduction of ideas and overview of process-oriented ideas

04 minutes51 seconds

Section2 Overview of ideas and examples

15 minutes42 seconds

Section3 Elephant put into refrigerator case

13 minutes10 seconds

Section4 development, design and features

03 minutes12 seconds

Section5 Classes and Objects

08 minutes14 seconds

Section6 Overview of class definitions and analysis of student classes

05 minutes22 seconds

Section7 Definition of student class

04 minutes41 seconds

Section8 Definition of mobile phone category

03 minutes55 seconds

Section9 Student use

11 minutes13 seconds

Section10 Use of mobile phones

04 minutes21 seconds

Section11 The memory map of an object

13 minutes01 seconds

Section12 Memory map of two objects

14 minutes09 seconds

Section13 Memory map of three objects

11 minutes32 seconds

Section14 The difference between member variables and local variables

11 minutes21 seconds

Section15 How to call the method when the formal parameter is the class name

11 minutes00 seconds

Section16 Overview and applications of anonymous objects

11 minutes33 seconds

Section17 Package overview

18 minutes01 seconds

Section18 Encapsulation benefits and design principles

03 minutes07 seconds

Section19 Overview and characteristics of the private keyword

05 minutes25 seconds

Section20 Private application standard cases

08 minutes06 seconds

Section21 Overview and application of this keyword

09 minutes32 seconds

Section22 Memory diagram of this keyword

13 minutes00 seconds

Section23 Standard mobile phone code and its testing

05 minutes36 seconds

Section24 Constructor method overview and format

06 minutes40 seconds

Section25 (Overloading and precautions of constructor methods

12 minutes06 seconds

Section26 Classification and use of member methods

06 minutes49 seconds

Section27 Code and tests for a standard student class

08 minutes51 seconds

Section28 A standard mobile phone code and test

06 minutes40 seconds

Section29 What is done to create the object

10 minutes06 seconds

Section30 When to define member variables

09 minutes43 seconds

Section31 Rectangle case exercise

09 minutes44 seconds

Section1 Employee case exercises

10 minutes12 seconds

Section2 Implement addition, subtraction, multiplication and division by yourself and test it

05 minutes56 seconds

Section3 Introduction of static keyword

10 minutes21 seconds

Section4 Characteristics of static keyword

08 minutes50 seconds

Section5 static memory diagram

16 minutes04 seconds

Section6 Precautions for static

08 minutes47 seconds

Section7 The difference between static variables and member variables

01 minutes40 seconds

Section8 Detailed explanation of the format of the main method

07 minutes50 seconds

Section9 Use static in tool classes

11 minutes16 seconds

Section10 Improvement of tools

06 minutes30 seconds

Section11 Instructions making process

13 minutes05 seconds

Section12 Use of tools and instructions

07 minutes00 seconds

Section13 How to use the help documentation provided by JDK

13 minutes07 seconds

Section14 Learn the random number function of Math class through JDK help documentation

08 minutes48 seconds

Section15 Guess the number game case

09 minutes30 seconds

Section16 Overview and classification of code blocks

14 minutes19 seconds

Section17 Code block to see program writing results

06 minutes52 seconds

Section18 Introduction and overview of inheritance

07 minutes45 seconds

Section19 Inheritance cases and benefits of inheritance

07 minutes09 seconds

Section20 Disadvantages of inheritance

03 minutes09 seconds

Section21 Inheritance characteristics of classes in Java

06 minutes48 seconds

Section22 Note on implementation of inheritance and when to use inheritance

12 minutes10 seconds

Section23 Relationship between member variables in inheritance

08 minutes09 seconds

Section24 The difference and application of this and super

07 minutes18 seconds

Section25 The relationship between constructors and methods in inheritance

07 minutes43 seconds

Section26 Things to note about constructors in inheritance

09 minutes42 seconds

Section27 Interview questions in inheritance 1

03 minutes48 seconds

Section28 Interview questions 2 in inheritance

04 minutes01 seconds

Section29 Interview questions 3 in inheritance

08 minutes18 seconds

Section30 Member method relationship in inheritance

04 minutes44 seconds

Section31 Application of method overriding

11 minutes46 seconds

Section32 Things to note about method overriding

07 minutes21 seconds

Section33 Two interview questions

04 minutes29 seconds

Section34 Using student and teacher cases before inheritance

05 minutes54 seconds

Section35 Student and teacher cases using inheritance

07 minutes14 seconds

Section36 Cat and dog case analysis

05 minutes09 seconds

Section37 Cat and dog case implementation and testing

09 minutes43 seconds

Section1 final keyword introduction

05 minutes41 seconds

Section2 The final keyword modifies the characteristics of classes, methods and variables

06 minutes08 seconds

Section3 The final keyword modifies local variables

08 minutes43 seconds

Section4 Initialization timing of final modified variables

05 minutes25 seconds

Section5 Overview and prerequisites for polymorphism

05 minutes06 seconds

Section6 Provide code reflection according to the premise of polymorphism

03 minutes41 seconds

Section7 Member access characteristics in polymorphism

09 minutes07 seconds

Section8 Advantages of polymorphism

20 minutes21 seconds

Section9 Disadvantages of polymorphism

02 minutes51 seconds

Section10 Upcasting and downcasting in polymorphism

07 minutes21 seconds

Section11 The case of Confucius pretending to be a father explains the phenomenon of polymorphism

09 minutes33 seconds

Section12 Memory diagram in polymorphic inheritance

09 minutes32 seconds

Section13 Memory diagram of object changes in polymorphism

13 minutes11 seconds

Section14 Cat and dog case polymorphic version

06 minutes14 seconds

Section15 Cases of Northerners and Southerners

07 minutes16 seconds

Section16 Polymorphic exercises to see program writing results

05 minutes52 seconds

Section17 Introduction of abstract classes

02 minutes44 seconds

Section18 Characteristics of abstract classes

13 minutes21 seconds

Section19 Characteristics of members of abstract classes

07 minutes54 seconds

Section20 Abstract class practice cat and dog case

11 minutes46 seconds

Section21 Abstract practice teacher case

07 minutes46 seconds

Section22 Abstract practice student case

09 minutes58 seconds

Section23 Abstract class practice employee case

17 minutes16 seconds

Section24 Small problems in abstract classes

06 minutes19 seconds

Section25 Introduction of interface

02 minutes39 seconds

Section26 Interface characteristics

09 minutes19 seconds

Section27 Interface member characteristics

12 minutes55 seconds

Section28 The relationship between classes, classes and interfaces, and interfaces

08 minutes08 seconds

Section29 The difference between abstract class and interface

04 minutes27 seconds

Section30 Cat and dog case adding high jump function analysis

04 minutes20 seconds

Section31 Cat and dog case adds high jump function code implementation

08 minutes45 seconds

Section32 Teacher and student cases add smoking function analysis and code implementation

09 minutes50 seconds

Section1 Athletes and coaches case studies

10 minutes13 seconds

Section2 Athletes and coaches case implementation

14 minutes35 seconds

Section3 Athletes and Coaches Case Tests

05 minutes52 seconds

Section4 Class name as formal parameter

07 minutes50 seconds

Section5 Abstract class name as formal parameter

05 minutes56 seconds

Section6 Interface name as formal parameter

05 minutes31 seconds

Section7 Class name as return value type

05 minutes41 seconds

Section8 Abstract class name as return value type

03 minutes59 seconds

Section9 Interface name as return value type

03 minutes23 seconds

Section10 chain programming

04 minutes44 seconds

Section11 Overview and function of package keyword

05 minutes39 seconds

Section12 Package definition and precautions

02 minutes51 seconds

Section13 Compile and run packaged classes

06 minutes26 seconds

Section14 Access between classes in different packages

07 minutes28 seconds

Section15 Overview and use of the import keyword

04 minutes12 seconds

Section16 Testing of four permission modifiers

13 minutes34 seconds

Section17 Common modifiers used by classes and their components

12 minutes15 seconds

Section18 Internal class overview and access characteristics

05 minutes13 seconds

Section19 Internal class classification and direct use of member internal classes

07 minutes50 seconds

Section20 Common modifiers and applications of member inner classes

14 minutes36 seconds

Section21 Interview questions for member internal classes

04 minutes53 seconds

Section22 Problem with local inner class accessing local variables

11 minutes31 seconds

Section23 Format and understanding of anonymous inner classes

05 minutes50 seconds

Section24 Anonymous inner class method call

04 minutes31 seconds

Section25 Application of anonymous inner classes in development

06 minutes38 seconds

Section26 Anonymous inner class interview questions

06 minutes32 seconds

Section1 Introduction to common development tools

05 minutes32 seconds

Section2 Overview of Eclipse and MyEclipse

08 minutes19 seconds

Section3 Download, install and uninstall Eclipse

06 minutes58 seconds

Section4 How to write a HelloWorld case in Eclipse

15 minutes45 seconds

Section5 How to compile and run programs in Eclipse

04 minutes00 seconds

Section6 Eclipse Chinese translation and grammar checking tips

08 minutes09 seconds

Section7 Eclipse windows and views overview

09 minutes01 seconds

Section8 Basic configuration of Eclipse workspace

12 minutes09 seconds

Section9 How to use content auxiliary keys in Eclipse

05 minutes32 seconds

Section10 How to use shortcut keys in Eclipse

13 minutes44 seconds

Section11 Automatic generation of constructor and get_set methods in Eclipse

06 minutes07 seconds

Section12 Simplification of inheriting abstract classes or implementing interfaces in Eclipse

05 minutes02 seconds

Section13 How to write a standard student class and its test in Eclipse

04 minutes35 seconds

Section14 Write high jump interface abstract animal class and concrete animal subclass in Eclipse

05 minutes42 seconds

Section15 How to generate a jar package in Eclipse and import it into a new project

05 minutes51 seconds

Section16 How to create help documents and use jar packages in Eclipse

05 minutes44 seconds

Section17 How to delete projects and import projects in Eclipse

04 minutes06 seconds

Section18 Small issues to pay attention to when importing projects into Eclipse

04 minutes51 seconds

Section19 Things to note when receiving projects during Eclipse development

03 minutes04 seconds

Section20 Basic use of debug in Eclipse

14 minutes52 seconds

Section21 Eclipse looks at parameter passing issues in Java

07 minutes51 seconds

Section22 API overview

03 minutes25 seconds

Section23 Learn the similarities and differences between Chinese and programming languages

07 minutes28 seconds

Section24 Overview of Object class

03 minutes34 seconds

Section25 hashCode() method of Object class

04 minutes49 seconds

Section26 getClass() method of Object class

04 minutes07 seconds

Section27 toString() method of Object class

13 minutes04 seconds

Section28 equals() method of Object class

13 minutes19 seconds

Section29 Code optimization of equals() method of Object class

11 minutes20 seconds

Section30 finalize() method and clone() method of Object class

11 minutes38 seconds

Section1 Scanner overview and construction method principles

09 minutes51 seconds

Section2 Explanation of hasNextXxx() and nextXxx() methods of Scanner class

06 minutes22 seconds

Section3 Scanner to obtain data minor problems and solutions

11 minutes02 seconds

Section4 Overview of the String class

05 minutes08 seconds

Section5 String class constructor

13 minutes14 seconds

Section6 Characteristics of String cannot be changed once assigned

07 minutes48 seconds

Section7 The difference between String literal objects and objects created by constructors

06 minutes55 seconds

Section8 String interview questions look at the program writing results

05 minutes13 seconds

Section9 Judgment function of String class

12 minutes09 seconds

Section10 Simulated user login case

08 minutes17 seconds

Section11 Breakpoint to view simulated user login case

04 minutes10 seconds

Section12 The enhanced version of the simulated user login case joins the guessing game

05 minutes37 seconds

Section13 Breakpoint view simulated user login case enhanced version joins the guessing game

04 minutes28 seconds

Section14 Get function of String class

13 minutes26 seconds

Section15 String traversal

04 minutes18 seconds

Section16 Cases of counting the number of uppercase, lowercase and numeric characters

08 minutes43 seconds

Section17 Breakpoint to view statistics on the number of uppercase, lowercase and numeric characters

02 minutes50 seconds

Section18 Conversion function of String class

12 minutes04 seconds

Section19 Convert the first letter of the string to uppercase and the rest to lowercase

05 minutes18 seconds

Section20 Other functions of String class

07 minutes01 seconds

Section21 Source code analysis of compareTo() method of String class

10 minutes26 seconds

Section22 A case of concatenating int arrays into strings

05 minutes28 seconds

Section23 An improved version of the case of concatenating int arrays into strings

02 minutes45 seconds

Section24 String reversal case

07 minutes38 seconds

Section25 Illustration of case ideas for finding the number of occurrences of a small string in a large string

09 minutes18 seconds

Section26 Case code implementation of finding the number of occurrences of a small string in a large string

07 minutes03 seconds

Section27 Find the number of occurrences of a small string in a large string case code optimization

02 minutes38 seconds

Section28 Breakpoint to view the case of finding the number of occurrences of a small string in a large string

03 minutes53 seconds

Section29 Overview of StringBuffer

12 minutes13 seconds

Section30 Constructor method of StringBuffer class

09 minutes22 seconds

Section31 Added functionality to StringBuffer

09 minutes03 seconds

Section32 StringBuffer deletion function

06 minutes42 seconds

Section33 StringBuffer replacement function

03 minutes13 seconds

Section1 StringBuffer reverse function

02 minutes26 seconds

Section2 StringBuffer interception function

04 minutes08 seconds

Section3 Conversion between StringBuffer and String

07 minutes18 seconds

Section4 Example of concatenating arrays into strings in a specified format

05 minutes17 seconds

Section5 String reversal function example

05 minutes25 seconds

Section6 Determine whether a string is symmetrical case

07 minutes17 seconds

Section7 Two small interview questions about StringBuffer

06 minutes08 seconds

Section8 String and StringBuffer are passed as parameters respectively

09 minutes48 seconds

Section9 Illustration of the principle of advanced bubble sorting of arrays

14 minutes14 seconds

Section10 Array advanced bubble sort code implementation

12 minutes15 seconds

Section11 Illustration of the principle of advanced selection sorting of arrays

12 minutes55 seconds

Section12 Array advanced selection sort code implementation

08 minutes17 seconds

Section13 Sorting characters in a string case

04 minutes32 seconds

Section14 Illustration of the principle of advanced binary search in arrays

11 minutes16 seconds

Section15 Array advanced binary search code implementation

07 minutes22 seconds

Section16 Things to note when using binary search

03 minutes01 seconds

Section17 Overview and use of Arrays tool class

07 minutes37 seconds

Section18 Source code analysis of Arrays tool class

14 minutes20 seconds

Section19 Introduction of basic type wrapper classes

08 minutes28 seconds

Section20 Integer constructor

04 minutes03 seconds

Section21 Conversion between String and int types

09 minutes09 seconds

Section22 Operation of base conversion in Integer

09 minutes14 seconds

Section23 New features of JDK5: automatic boxing and unboxing

08 minutes47 seconds

Section24 Interview questions about direct assignment of Integer

08 minutes51 seconds

Section25 Overview of Character

03 minutes17 seconds

Section26 Explanation of common methods of Character

04 minutes18 seconds

Section27 Count the number of uppercase, lowercase and number occurrences in a string

05 minutes51 seconds

Section28 How to verify a QQ number case

09 minutes30 seconds

Section29 Overview and basic use of regular expressions

04 minutes28 seconds

Section30 Regular expression composition rules

13 minutes14 seconds

Section31 Regular expression judgment function

07 minutes35 seconds

Section32 Verification email case

07 minutes47 seconds

Section33 Regular expression split function

08 minutes28 seconds

Section1 A small exercise in splitting functions

05 minutes16 seconds

Section2 Sorting numbers in a string case

06 minutes40 seconds

Section3 Regular expression replacement function

06 minutes02 seconds

Section4 Overview of Patterns and Matchers

06 minutes07 seconds

Section5 Regular expression acquisition function

09 minutes37 seconds

Section6 Math class overview and method usage

17 minutes10 seconds

Section7 How to get random number cases in any range

07 minutes49 seconds

Section8 Overview and method usage of Random class

08 minutes54 seconds

Section9 An explanation of the garbage collection method gc() in the System class

09 minutes11 seconds

Section10 Explanation of exit() and currentTimeMillis() in System class

09 minutes07 seconds

Section11 Explanation of arraycopy() in System class

06 minutes05 seconds

Section12 Overview and construction method of BigInteger

05 minutes20 seconds

Section13 The use of addition, subtraction, multiplication and division of BigInteger

04 minutes20 seconds

Section14 Introduction and overview of BigDecimal

06 minutes53 seconds

Section15 Use of addition, subtraction, multiplication and division of BigDecimal

07 minutes49 seconds

Section16 Overview and construction method of Date

06 minutes48 seconds

Section17 Conversion between date and milliseconds in Date class

03 minutes33 seconds

Section18 DateFormat implements mutual conversion between dates and strings

18 minutes27 seconds

Section19 Writing and testing cases for date tool classes

09 minutes37 seconds

Section20 How many days have you been in this world? Case Study

06 minutes47 seconds

Section21 Overview of the Calendar class and methods for obtaining calendar fields

11 minutes15 seconds

Section22 add() and set() methods of Calendar class

06 minutes08 seconds

Section23 How to get the number of days in February of any year

06 minutes32 seconds

Section1 JAVA collection framework (1)

10 minutes41 seconds

Section2 Memory diagram for array of objects

08 minutes19 seconds

Section3 The origin of sets and their differences from arrays

07 minutes56 seconds

Section4 Collection inheritance system diagram

10 minutes26 seconds

Section5 Collection function overview

13 minutes06 seconds

Section6 Basic functional testing of Collection collection

11 minutes55 seconds

Section7 Advanced functional testing of Collections

09 minutes43 seconds

Section8 Collection traversal, set to array traversal

06 minutes16 seconds

Section9 Collection stores custom objects and iterates through cases

05 minutes35 seconds

Section10 Iterator traversal of collections

08 minutes55 seconds

Section11 Collection stores custom objects and iterates through cases

04 minutes59 seconds

Section12 Discussion on issues using iterators

05 minutes21 seconds

Section13 Illustration of steps for using collections

07 minutes12 seconds

Section14 The principle and source code analysis of iterators

14 minutes36 seconds

Section15 Collection stores strings and traverses

04 minutes12 seconds

Section16 Collection stores student objects and traverses

06 minutes49 seconds

Section17 List stores strings and traverses

02 minutes59 seconds

Section18 Characteristics of List collection

05 minutes51 seconds

Section19 List stores student objects and traverses

02 minutes52 seconds

Section20 Overview and testing of unique features of List collection

10 minutes42 seconds

Section21 Unique traversal function of List collection

04 minutes01 seconds

Section22 List stores custom objects and traverses

04 minutes00 seconds

Section23 Unique functions of ListIterator

10 minutes54 seconds

Section24 Causes and solutions of concurrent modification exceptions

09 minutes22 seconds

Section25 Data structures stack and queue

11 minutes05 seconds

Section26 Data structures arrays and linked lists

17 minutes20 seconds

Section27 Characteristics of the three subclasses of List

07 minutes41 seconds

Section28 ArrayList stores strings and traverses

05 minutes15 seconds

Section29 ArrayList stores custom objects and traverses

05 minutes15 seconds

Section30 Vector’s unique features

07 minutes26 seconds

Section31 Unique functions of LinkedList

06 minutes44 seconds

Section32 Remove duplicate string elements from the ArrayList collection Case 1

08 minutes29 seconds

Section33 Breakpoint view to remove duplicate elements case 1

03 minutes20 seconds

Section34 Remove duplicate string elements from the ArrayList collection Case 2

08 minutes54 seconds

Section1 Case of removing duplicate custom object elements from ArrayList collection

09 minutes46 seconds

Section2 Collection code to implement stack structure using LinkedList

04 minutes14 seconds

Section3 Use LinkedList to simulate a collection of stack data structures and merge test cases

06 minutes53 seconds

Section4 Generics Overview and Basic Usage

14 minutes59 seconds

Section5 ArrayList stores strings and traverses the generic version

03 minutes42 seconds

Section6 ArrayList stores custom objects and traverses the generic version

07 minutes48 seconds

Section7 Introducing generics through Object transformation issues

06 minutes04 seconds

Section8 Overview and use of generic classes

08 minutes42 seconds

Section9 Overview and use of generic methods

08 minutes51 seconds

Section10 Overview and use of generic interfaces

05 minutes47 seconds

Section11 Advanced generic wildcards

08 minutes04 seconds

Section12 Enhance the overview and use of for

10 minutes42 seconds

Section13 ArrayList stores strings and traverses the enhanced for version

02 minutes46 seconds

Section14 ArrayList stores custom objects and traverses the enhanced for version

06 minutes52 seconds

Section15 Overview and use of static imports

06 minutes05 seconds

Section16 Overview and use of variable parameters

09 minutes44 seconds

Section17 Use of the asList() method of the Arrays tool class

05 minutes36 seconds

Section18 Case illustration of collection nested storage and traversal elements

07 minutes28 seconds

Section19 Case code implementation of collection nested storage and traversal elements

08 minutes07 seconds

Section20 Generating 10 random numbers between 1 and 20 requires that the random numbers cannot be repeated.

06 minutes35 seconds

Section21 Case of inputting multiple data with the keyboard and outputting the maximum value on the console

09 minutes43 seconds

Section22 Source code analysis of toString() method of ArrayList collection

09 minutes57 seconds

Section23 User login registration case analysis illustration

09 minutes05 seconds

Section24 Detailed analysis of user login registration cases and implementation of subcontracting

09 minutes42 seconds

Section25 User login registration case implementation of user basic description class and user operation interface

05 minutes43 seconds

Section26 User login registration case specific implementation of user operation class

04 minutes47 seconds

Section27 Implementation of user test class for user login registration case

13 minutes35 seconds

Section28 User login registration case user test class small problem solving

04 minutes01 seconds

Section29 User login registration case join the guessing number game

08 minutes55 seconds

Section30 Console shopping management system function demonstration

13 minutes59 seconds

Section31 Set collection overview and characteristics

07 minutes22 seconds

Section32 HashSet stores strings and traverses

02 minutes58 seconds

Section33 Source code analysis of HashSet to ensure element uniqueness

20 minutes19 seconds

Section1 HashSet stores custom objects and traverses

06 minutes25 seconds

Section2 HashSet code implementation and illustration to ensure element uniqueness

26 minutes03 seconds

Section3 HashSet stores custom objects and iterates through exercises

08 minutes07 seconds

Section4 Overview and use of LinkedHashSet

03 minutes34 seconds

Section5 TreeSet stores elements of type Integer and traverses them

05 minutes46 seconds

Section6 Source code analysis of TreeSet to ensure element sorting

11 minutes21 seconds

Section7 The principles and diagrams of TreeSet to ensure element uniqueness and natural ordering

12 minutes28 seconds

Section8 TreeSet stores custom objects and traverses exercise 1

12 minutes26 seconds

Section9 TreeSet stores custom objects and traverses Exercise 2

06 minutes10 seconds

Section10 The principle and code implementation of TreeSet to ensure element uniqueness and comparator sorting

10 minutes05 seconds

Section11 Reinterpretation of the source code of TreeSet's add() method and summary of TreeSet's sorting of elements

06 minutes47 seconds

Section12 Generate 10 random numbers between 1-20 and require that the random numbers cannot be repeated. Simple version of the case

04 minutes05 seconds

Section13 Case study of inputting student information with the keyboard and sorting it by total score and then outputting it on the console

14 minutes43 seconds

Section14 Map collection overview and features

10 minutes34 seconds

Section15 Function overview of Map collection

08 minutes08 seconds

Section16 Basic functional testing of Map collection

12 minutes53 seconds

Section17 Map collection acquisition function test

04 minutes53 seconds

Section18 Map collection traversal to find the key value

07 minutes20 seconds

Section19 Traversing the Map collection to find the key and value of the key-value pair object

07 minutes19 seconds

Section20 Comparison of two methods of Map collection traversal

11 minutes06 seconds

Section21 A case where the HashMap collection key is Stirng and the value is String

07 minutes36 seconds

Section22 A case where the HashMap collection key is an Integer and the value is a String

05 minutes35 seconds

Section23 The case where the HashMap collection key is String and the value is Student

05 minutes28 seconds

Section24 The case where the HashMap collection key is Student and the value is String

06 minutes04 seconds

Section25 Overview and use of LinkedHashMap

03 minutes58 seconds

Section26 TreeMap collection key is a String value is a case of String

04 minutes13 seconds

Section27 The case where the TreeMap collection key is Student and the value is String

07 minutes05 seconds

Section28 Case illustration of counting the number of occurrences of each character in a string

10 minutes32 seconds

Section29 Case code implementation for counting the number of occurrences of each character in a string

07 minutes51 seconds

Section30 Breakpoint to view statistics of the number of occurrences of each character in a string

06 minutes02 seconds

Section31 Case of HashMap collection nested HashMap collection

11 minutes27 seconds

Section32 Case of HashMap collection nested ArrayList collection

04 minutes38 seconds

Section33 Case of ArrayList collection nested HashMap collection

03 minutes56 seconds

Section1 Aggregate multiple levels of nested data analysis

07 minutes36 seconds

Section2 Collection of multi-level nested code manifestations

12 minutes40 seconds

Section3 The difference between HashMap and Hashtable

06 minutes17 seconds

Section4 Overview of the Collections utility class

02 minutes47 seconds

Section5 Explanation of common methods of Collections tool class

08 minutes30 seconds

Section6 ArrayList stores custom objects and sorts cases

10 minutes00 seconds

Section7 Simulate the card shuffling and dealing of Landlords

14 minutes53 seconds

Section8 Illustration of the principle of simulating the card shuffling, dealing and sorting of cards in Landlord

08 minutes28 seconds

Section9 Code implementation to simulate Doudizhu shuffling and dealing cards and sorting the cards

14 minutes48 seconds

Section10 Summary of characteristics and data structures of collections

10 minutes23 seconds

Section11 How to choose which collection to use?

05 minutes28 seconds

Section12 Summary of common functions and traversal methods of various collections

05 minutes13 seconds

Section1 Overview of IO streaming technology

13 minutes25 seconds

Section2 Overview and classification of exceptions

15 minutes27 seconds

Section3 How the JVM handles exceptions by default

05 minutes01 seconds

Section4 Handling exceptions using try...catch 1

09 minutes06 seconds

Section5 Handling exceptions using try...catch 2

15 minutes12 seconds

Section6 JDK7’s handling solution for multiple exceptions

05 minutes12 seconds

Section7 The difference between compile-time exceptions and run-time exceptions

07 minutes21 seconds

Section8 Several common methods of Throwable

10 minutes54 seconds

Section9 Handling exceptions using throws

09 minutes15 seconds

Section10 Overview of throw and the difference from throws

08 minutes01 seconds

Section11 How to handle exceptions?

02 minutes26 seconds

Section12 Characteristics and functions of finally keyword

08 minutes13 seconds

Section13 Interview questions: The difference between final, finally and finalize

05 minutes39 seconds

Section14 Interview question: If there is return before finally

07 minutes04 seconds

Section15 An overview of variations in exception handling and custom exceptions

05 minutes43 seconds

Section16 Implementation and testing of custom exceptions

09 minutes35 seconds

Section17 Unusual precautions

07 minutes03 seconds

Section18 Overview and construction method of File class

08 minutes56 seconds

Section19 File class creation function

16 minutes14 seconds

Section20 Delete function of File class

10 minutes12 seconds

Section21 Renaming function of File class

05 minutes05 seconds

Section22 Judgment function of File class

04 minutes13 seconds

Section23 File class acquisition function

05 minutes39 seconds

Section24 Advanced acquisition functions of File class

04 minutes44 seconds

Section25 Example of outputting the file name with the specified suffix in the specified directory

04 minutes04 seconds

Section26 File filter improvement case for outputting file names with specified suffixes in specified directories

09 minutes16 seconds

Section27 Source code of list() method with file name filter

04 minutes13 seconds

Section28 Batch modification of file names case

13 minutes32 seconds

Section29 Recursion overview and considerations

16 minutes04 seconds

Section30 Ideas and illustrations of recursive problem solving

11 minutes10 seconds

Section31 Code implementation and memory diagram for recursively finding factorial

11 minutes26 seconds

Section32 Breakpoint to view the execution process of recursive factorial calculation

02 minutes03 seconds

Section33 Immortal Rabbit Problem Case

14 minutes01 seconds

Section1 Example of recursively outputting the absolute paths of all java files in a specified directory

07 minutes30 seconds

Section2 Recursively delete directory with content case

06 minutes39 seconds

Section3 Breakpoint to view the execution process of deleting a directory with content

05 minutes14 seconds

Section4 Overview and classification of IO flows

10 minutes23 seconds

Section5 Overview of IO stream base class and a simple requirements analysis

06 minutes11 seconds

Section6 Constructor of FileOutputStream

08 minutes53 seconds

Section7 FileOutputStream writes data

09 minutes56 seconds

Section8 Three write() methods of FileOutputStream

06 minutes43 seconds

Section9 FileOutputStream writes data to implement line breaks and append writing

10 minutes07 seconds

Section10 FileOutputStream writes data and adds exception handling

07 minutes45 seconds

Section11 FileInputStream reads data

12 minutes34 seconds

Section12 Byte stream copy text file case 1

08 minutes26 seconds

Section13 How does the computer recognize and concatenate two bytes into Chinese?

03 minutes36 seconds

Section14 Byte stream copy text file case 2

02 minutes45 seconds

Section15 Byte stream copy picture case

02 minutes57 seconds

Section16 Byte stream copy video case 1

04 minutes40 seconds

Section17 FileInputStream reads data one byte array at a time

17 minutes58 seconds

Section18 Comparison of two ways to read data using FileInputStream

07 minutes54 seconds

Section19 Byte stream copy text file case 3

03 minutes37 seconds

Section20 Byte stream copy video case 2

02 minutes48 seconds

Section21 BufferedOutputStream writes data

09 minutes12 seconds

Section22 BufferedInputStream reads data

04 minutes15 seconds

Section23 Four ways of byte stream copying MP4 and testing efficiency

10 minutes44 seconds

Section24 Reasons and formats for the occurrence of conversion streams

07 minutes16 seconds

Section25 Overview of coding tables and common coding tables

15 minutes02 seconds

Section26 Encoding and decoding issues in String class

14 minutes09 seconds

Section27 Use of conversion stream OutputStreamWriter

08 minutes59 seconds

Section28 Use of conversion stream InputStreamReader

05 minutes13 seconds

Section29 5 ways to write data in character streams

12 minutes20 seconds

Section30 Two ways to read data from character streams

03 minutes42 seconds

Section31 Character stream copy text file case 1

05 minutes48 seconds

Section32 Character stream copy text file case 2

08 minutes41 seconds

Section33 Character stream copy text file case 3

03 minutes29 seconds

Section1 The use of character buffer output stream BufferedWriter

05 minutes05 seconds

Section2 The use of character buffer input stream BufferedReader

02 minutes59 seconds

Section3 Character buffer stream copy text file case 1

03 minutes22 seconds

Section4 Special features of character buffer streams

08 minutes07 seconds

Section5 Character buffer stream copy text file case 2

02 minutes51 seconds

Section6 IO flow summary diagram

08 minutes50 seconds

Section7 5 ways to copy text files

09 minutes36 seconds

Section8 4 ways to copy pictures

10 minutes38 seconds

Section9 Example of storing data in a collection into a text file

04 minutes33 seconds

Section10 Store data in text files into collections case

03 minutes58 seconds

Section11 Randomly obtain name cases from text files

03 minutes34 seconds

Section12 Copy single-level folder case

08 minutes32 seconds

Section13 Copy the file with the specified suffix in the specified directory and modify the name case

12 minutes32 seconds

Section14 Breakpoint to view the execution process of copying files and modifying the suffix name case

06 minutes49 seconds

Section15 Copy multi-level folder case

10 minutes26 seconds

Section16 Case study of inputting student information using the keyboard, sorting it by total score and writing it into a text file

13 minutes41 seconds

Section17 Example of sorting strings in one file and then writing them to another file

04 minutes47 seconds

Section18 Custom class simulates BufferedReader's readLine() function case

18 minutes43 seconds

Section19 Use cases for LineNumberReader

04 minutes24 seconds

Section20 Custom class simulates LineNumberReader's function case of getting line numbers

09 minutes07 seconds

Section21 Knowledge review of login registration cases

09 minutes05 seconds

Section22 Login registration case IO version implementation

18 minutes06 seconds

Section23 Overview and explanation of data input and output flows

09 minutes20 seconds

Section24 Overview and explanation of memory operation flow

10 minutes53 seconds

Section25 Overview and features of print streams

07 minutes44 seconds

Section26 PrintWriter is used as a subclass of Writer

02 minutes21 seconds

Section27 PrintWriter implements automatic refresh and line wrapping

07 minutes27 seconds

Section28 Print flow improvement copy text file case

06 minutes17 seconds

Section29 Overview of standard input and output streams and the nature of output statements

06 minutes27 seconds

Section30 Three ways to achieve keyboard entry

09 minutes50 seconds

Section1 Output statements are improved with character buffer streams

07 minutes12 seconds

Section2 Random access flow overview and writing out data

07 minutes31 seconds

Section3 Random access streams read data and manipulate file pointers

05 minutes29 seconds

Section4 Combined streams read the contents of two files and copy them into one file

11 minutes01 seconds

Section5 Merge streams to read the contents of multiple files and copy them into one file

06 minutes25 seconds

Section6 Overview and use of serialization and deserialization streams

15 minutes38 seconds

Section7 How to solve the yellow warning line problem during serialization

10 minutes35 seconds

Section8 How to prevent object member variables from being serialized

02 minutes18 seconds

Section9 Overview of Properties and use as a Map collection

06 minutes46 seconds

Section10 Use of special functions of Properties

07 minutes09 seconds

Section11 Load() and store() functions of Properties

12 minutes51 seconds

Section12 Determine whether the specified key exists in the file. If so, modify the value.

04 minutes15 seconds

Section13 How to make the guessing number game only playable 5 times

11 minutes08 seconds

Section14 Introduction to NIO and a case of NIO under JDK7

11 minutes44 seconds

Section1 The introduction of multi-threaded programs

09 minutes24 seconds

Section2 Process overview and the significance of multiple processes

15 minutes36 seconds

Section3 Overview of threads and the significance of multithreading

08 minutes02 seconds

Section4 Examples of multithreading and the difference between parallelism and concurrency

05 minutes08 seconds

Section5 Is the running principle of Java program and the startup of JVM multi-threaded?

05 minutes48 seconds

Section6 How to implement multi-threading and multi-threading method 1 ideas

06 minutes29 seconds

Section7 Code implementation of multi-threading mode 1

14 minutes28 seconds

Section8 Get and set thread object name

17 minutes28 seconds

Section9 Thread scheduling and getting and setting thread priority

12 minutes44 seconds

Section10 Thread control sleeping thread

05 minutes36 seconds

Section11 Thread control - joining thread

04 minutes12 seconds

Section12 Thread control courtesy thread

04 minutes09 seconds

Section13 Thread control daemon thread

07 minutes51 seconds

Section14 Thread control interrupt thread

07 minutes55 seconds

Section15 Thread life cycle diagram

09 minutes39 seconds

Section16 The idea and code implementation of multi-threading mode 2

07 minutes29 seconds

Section17 Graphical comparison and differences between two methods of multithreading

06 minutes59 seconds

Section18 Case Study of Selling Movie Tickets by Inheriting Thread Class

10 minutes44 seconds

Section19 Case Study of Selling Movie Tickets by Implementing Runnable Interface

04 minutes20 seconds

Section20 Analysis of the reasons why there are same tickets and negative tickets when buying movie tickets

13 minutes04 seconds

Section21 Analysis of the causes of thread safety issues

05 minutes30 seconds

Section22 Synchronized code blocks solve thread safety issues

07 minutes58 seconds

Section23 Explanation of synchronized code blocks solving thread safety issues

05 minutes25 seconds

Section24 Characteristics, benefits and drawbacks of synchronization

04 minutes22 seconds

Section25 Fast locks for synchronized code and problems with application of synchronization methods and locks

12 minutes33 seconds

Section26 Review of previous thread-safe classes

04 minutes27 seconds

Section27 Overview and use of Lock after JDK5

13 minutes02 seconds

Section28 Overview and use of deadlock problems

13 minutes22 seconds

Section29 Producer-consumer problem description diagram

06 minutes26 seconds

Section1 Producer consumer problem code 1

11 minutes33 seconds

Section2 Producer consumer question code 2 and solve thread safety issues

13 minutes25 seconds

Section3 Illustration of the producer-consumer waiting wake-up mechanism idea

07 minutes18 seconds

Section4 Code implementation of producer-consumer waiting wake-up mechanism

10 minutes13 seconds

Section5 Code analysis of producer-consumer waiting wake-up mechanism

06 minutes35 seconds

Section6 Thread state transition diagram and common execution situations

02 minutes56 seconds

Section7 Overview and use of thread groups

13 minutes07 seconds

Section8 Producer-consumer waiting wake-up mechanism code optimization

07 minutes28 seconds

Section9 Overview and use of thread pools

17 minutes37 seconds

Section10 The idea and code implementation of multi-threading mode 3

07 minutes28 seconds

Section11 Summing case of multi-threading mode 3

06 minutes51 seconds

Section12 Implementing multi-threaded programs using anonymous inner classes

07 minutes09 seconds

Section13 Overview and use of timers

12 minutes26 seconds

Section14 Multiple execution code embodiment of scheduled tasks

02 minutes27 seconds

Section15 Delete specified directories with content regularly

09 minutes49 seconds

Section16 Common interview questions about multithreading

07 minutes28 seconds

Section1 An overview of common object-oriented design principles

09 minutes27 seconds

Section2 Overview and classification of design patterns

10 minutes24 seconds

Section3 Overview and use of simple factory pattern

14 minutes57 seconds

Section4 Overview and use of the factory method pattern

08 minutes47 seconds

Section5 Singleton pattern: Hungry style

08 minutes07 seconds

Section6 The lazy style of singleton pattern

08 minutes02 seconds

Section7 Java code in singleton mode embodies the Runtime class

07 minutes44 seconds

Section1 GUI overview and the difference between GUI and CLI

03 minutes55 seconds

Section2 The difference between java.awt and javax.swing packages

03 minutes16 seconds

Section3 Component inheritance diagram in GUI

08 minutes25 seconds

Section4 HelloWorld form case

10 minutes19 seconds

Section5 Optimize HelloWorld form case code

07 minutes52 seconds

Section6 Overview and examples of event listening mechanism principles

10 minutes13 seconds

Section7 Form close case

04 minutes58 seconds

Section8 Adapter design pattern explained

09 minutes40 seconds

Section9 Adapter class improves form closing case

02 minutes07 seconds

Section10 Add a button to the form and add an event case to the button

17 minutes37 seconds

Section11 Transfer text box value to text field case

12 minutes09 seconds

Section12 Change the background color by moving the mouse over the button case

11 minutes12 seconds

Section13 How to control that only numeric characters can be entered in the text box

12 minutes35 seconds

Section14 First level menu case

08 minutes47 seconds

Section15 Multi-level menu case

08 minutes33 seconds

Section16 Overview and use of Netbeans

09 minutes37 seconds

Section17 Simulation of four arithmetic operations cases

18 minutes13 seconds

Section18 Modify the icon code of the form

07 minutes53 seconds

Section19 How to set the code to center the form

06 minutes44 seconds

Section20 How to modify the code of the form's skin

11 minutes02 seconds

Section21 Add checksum prompts to four arithmetic operations cases

09 minutes23 seconds

Section22 Review of the package structure of user login registration

03 minutes51 seconds

Section23 Implementation of basic functions of user login and registration

08 minutes23 seconds

Section24 User login and registration interface implementation

04 minutes53 seconds

Section25 User login and registration interface jumps

05 minutes32 seconds

Section26 The final version of user login registration

12 minutes42 seconds

Section27 User login registration to join four arithmetic operations cases

10 minutes36 seconds

Section1 Network Programming Overview

04 minutes19 seconds

Section2 Network model overview and illustration

13 minutes08 seconds

Section3 Overview of the three elements of network programming

06 minutes31 seconds

Section4 Overview of IP in the Three Elements of Network Programming 1

15 minutes15 seconds

Section5 IP Overview of Three Elements of Network Programming 2

05 minutes34 seconds

Section6 Overview and use of the InetAddress class

08 minutes06 seconds

Section7 Ports of the three elements of network programming

03 minutes46 seconds

Section8 Protocols of the three elements of network programming

07 minutes03 seconds

Section9 Socket communication principle diagram

04 minutes39 seconds

Section10 UDP protocol sends data

11 minutes09 seconds

Section11 UDP protocol receives data

09 minutes38 seconds

Section12 Diagram of sending and receiving data using UDP protocol

03 minutes56 seconds

Section13 UDP protocol sending and receiving data code optimization

06 minutes03 seconds

Section14 The data on the sending end comes from the keyboard entry case

06 minutes26 seconds

Section15 DOS window demonstration simple chat applet

02 minutes51 seconds

Section16 Multi-threaded chat room program

06 minutes57 seconds

Section17 Demonstration of a GUI version of the chat program case

09 minutes23 seconds

Section18 TCP protocol sends data

07 minutes36 seconds

Section19 TCP protocol receives data

09 minutes30 seconds

Section20 Illustration of sending and receiving data using TCP protocol

09 minutes25 seconds

Section21 The server gives the client a feedback case

06 minutes08 seconds

Section22 Client keyboard input server console output

09 minutes37 seconds

Section23 Client keyboard input server writes to text file

06 minutes13 seconds

Section24 Client reads text file server console output

05 minutes01 seconds

Section25 TCP protocol upload text file

05 minutes05 seconds

Section26 TCP upload text file and give feedback

11 minutes31 seconds

Section27 TCP protocol uploads pictures and gives feedback

10 minutes04 seconds

Section28 Thoughts on uploading multiple clients to one server

04 minutes24 seconds

Section29 Multi-threading improves the case of multiple clients uploading files

07 minutes49 seconds

Section1 Class loading overview and loading timing

06 minutes39 seconds

Section2 Overview and classification of class loaders

07 minutes43 seconds

Section3 Reflection overview

05 minutes45 seconds

Section4 Three ways to obtain class file objects

12 minutes22 seconds

Section5 Obtain the no-argument constructor through reflection and use

13 minutes05 seconds

Section6 Obtain the parameterized constructor through reflection and use

04 minutes52 seconds

Section7 Get the private constructor via reflection and use

07 minutes36 seconds

Section8 Get member variables through reflection and use

10 minutes40 seconds

Section9 Obtain member methods with no parameters and return values ​​through reflection and use

08 minutes04 seconds

Section10 Obtain member methods with parameters and return values ​​through reflection and use

04 minutes49 seconds

Section11 Run configuration file contents via reflection

10 minutes39 seconds

Section12 Bypassing generic checks via reflection

06 minutes23 seconds

Section13 Write a general method to set a certain property of an object to a specified value through reflection

07 minutes33 seconds

Section14 Lead intermediaries through user additions, deletions, modifications and student logins and registrations

12 minutes49 seconds

Section15 Overview and implementation of dynamic agents

17 minutes16 seconds

Section16 Overview and use of template design patterns

13 minutes40 seconds

Section17 Decoration mode overview and usage

17 minutes56 seconds

Section1 Review of new features of JDK5

02 minutes37 seconds

Section2 Implement your own enumeration class

14 minutes17 seconds

Section3 Implement enum class through enum

09 minutes38 seconds

Section4 Notes on enumerations

04 minutes02 seconds

Section5 Common ways to enumerate classes

08 minutes24 seconds

Section6 Review and explanation of six new features of JDK7

11 minutes51 seconds

Section7 Download, install and uninstall JDK

08 minutes39 seconds

Section8 Interfaces can also have methods

09 minutes42 seconds