CourseElementary54275

Course Introduction："HTML5 From Beginner to Mastery Tutorial" introduces in detail that HTML5 has added a lot of new content based on HTML, with more functions and more dazzling effects.

CourseElementary27087

Course Introduction："Javascript Basics Tutorial" will take you to quickly learn the basic knowledge of javascript and explain it through examples, so that you can better understand the javascript scripting language.

CourseElementary30954

Course Introduction：This tutorial will start from the basics and does not require you to have any programming knowledge. The "HTML Tutorial" contains our knowledge of HTML5, truly achieving a comprehensive learning of HTML.

CourseElementary24240

Course Introduction："HTML5 Quick Self-Study Tutorial" is suitable for zero-based entry learning of HTML5. HTML5 is the fifth version of HTML development. With the support of browser technology, it has also begun to be widely used. H5 will become the new standard for WEB development. This course will provide readers with Explain all the core features of HTML5.

CourseElementary90813

Course Introduction："JavaScript Elementary Tutorial" is an introductory course to JavaScript, designed to let everyone know and understand the common knowledge of JavaScript.

Course Introduction：In Java, use the get() method of the Hashtable class to obtain the value corresponding to the key. Hashtable is a commonly used data structure class in Java. It implements a hash table of key-value pairs. It calculates the storage location through the key, so that the corresponding value can be found directly through the key, thereby enabling fast access and storage of data. In the Hashtable class, we can use the get() method to obtain the value corresponding to a key. The syntax of the get() method is as follows: publicVge

2023-07-24 comment 01350

Course Introduction：Java uses the entrySet() function of the Map class to obtain a collection of key-value pairs. In Java programming, Map is a commonly used data structure that can store key-value pairs. Using Map makes it easy to store and search data. In Map, we can get the corresponding value by key, but sometimes we need to get the entire collection of key-value pairs. At this time, we can use the entrySet() function of the Map class to achieve this. The entrySet() function of the Map class returns a Set collection

2023-07-25 comment 01619

Course Introduction：In Java, use the get() method of the HashMap class to obtain the value corresponding to the key. In Java programming, HashMap is a commonly used data structure used to store key-value pairs in a one-to-one mapping relationship. HashMap allows us to quickly access values by key and has good performance. The HashMap class provides many methods, one of which is the get() method, which is used to obtain the value corresponding to the key. Below we will introduce how to use the get() method of the HashMap class and provide examples

2023-07-24 comment 01413

Course Introduction：Hashtable is a data structure class in Java used to store key-value pairs. It is based on the implementation of hash table and can efficiently perform insertion, search and deletion operations of elements. In the Hashtable class, the method for inserting key-value pairs is the put() method. The put() method is used to insert the specified key-value pair into the Hashtable. It accepts two parameters. The first parameter is the key, which is used to uniquely identify a value; the second parameter is the value, which is the data to be stored.

2023-07-25 comment 0883

Course Introduction：Use the size() method of the HashMap class in Java to obtain the number of key-value pairs in the map. In the Java programming language, HashMap is a commonly used data structure used to store key-value pairs. It provides fast find, insert, and delete operations, and can quickly locate values based on keys. When using HashMap, we often need to know how many key-value pairs are currently stored in the HashMap. In this case, we can use the size() method of HashMap to obtain the number of key-value pairs in the map.

2023-07-24 comment 01388