1-1 Editplus installation and basic use

1-2 Commonly used shortcut keys

1-3 computer components

1-4 Software classification

1-5 Common DOS commands

1-6 Java language development history

1-7 Java language features

1-8 History of computer language development

1-9 Installation of jdk and configuration of environment variables

1-10 components of java program

1-11 Output statements in java program

1-12 Comments in java program

1-13 The difference between public Class and class

1-14 Review what was taught in the last class

1-15 identifier

1-16 Keywords and reserved words

1-17 Literal value

1-18 Conversion between base and base

1-19 variable

1-20 Common mistakes in variables

1-21 Classification of variables

1-22 Basic data types

1-23 Conversion between data types

1-24 Review what was taught in the last class

1-25 After class exercises

1-26 escape sequence character

1-27 arithmetic operators

1-28 concatenation operator

1-29 assignment operator

1-30 Relational operators

1-31 Logical Operators

1-32 ternary operator

1-33 keyboard input

1-34 Review what was said before

1-35 After class exercises

1-36 if judgment

1-37 random number

1-38 if Else

1-39 multiple choice structure

1-40 if nested

1-41 Nested if example

1-42 Review what was said before

1-43 After class exercises

1-44 switch Case

1-45 for loop

1-46 for loop summary

1-47 while loop

1-48 do While loop

1-49 Use break in a loop

1-50 Use continue in a loop

1-51 The difference between break and continue

1-52 Review what was taught in the last class

1-53 After class exercises

1-54 Similarities and differences between the three types of cycles

1-55 double loop

1-56 Print isosceles triangle

1-57 Use break statement in double loop

1-58 Use continue statement in double loop

1-59 array

1-60 array 2

1-61 Review what was taught in the last class

1-62 After class exercises

1-63 Use of eclipse

1-64 Use of packages

1-65 Use of import

1-66 Review what was taught in the last class

1-67 Basic operations of methods

1-68 Method with no parameters and no return value

1-69 Method with no parameters and return value

1-70 Method with parameters and no return value

1-71 Methods that take parameters and return values

1-72 The method return value is a boolean type case

1-73 Greatest common divisor and least common multiple methods completed

1-74 Method overloading

1-75 recursion

1-76 After class exercises

1-77 classes and objects

1-78 Basic operations of classes

1-79 Object memory analysis graph

1-80 Construction method

1-81 Review what was taught in the last class

1-82 After-class exercises-1

1-83 Null pointer exception

1-84 this keyword

1-85 Encapsulation

1-86 Singleton design pattern

1-87 Continue the singleton design pattern

1-88 After class exercise 3

1-89 Homework 6

1-90 Basic data types are passed as parameters

1-91 Reference data types are passed as parameters

1-92 inherit

1-93 What does the parent class do when it instantiates a subclass?

1-94 Inheritance case

1-95 rewrite

1-96 Review what was taught in the last class

1-97 After class exercises

1-98 After-class exercises-2

1-99 After-class exercises 3

1-100 Polymorphism

1-101 Use the parent class as the return value type of the method

1-102 Conversion between parent class and child class

1-103 After class exercises

1-104 final keyword

1-105 abstract class

1-106 interface

1-107 Interface case

1-108 Interface case-2

1-109 The difference between interface and abstract class

1-110 The difference between next() and nextline()

1-111 access modifier

1-112 Commonly used methods in object class

1-113 anonymous inner class