Java
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09-04 java interface
Export of interface Going back to our cat and dog case, let's think that dogs are usually gatekeepers and cats are usu…… -
01-02 Notepad + + installation, configuration and use
1、 Installation According to the default settings, go to the next step. 2、 Disposition Set -- > preferences -- &g…… -
13-01 Java StringBuffer class, StringBuilder class
@H_ 301_ 0@StringBuffer Class construction method -
09-02 Java polymorphism
The premise and characteristics of polymorphism Benefits of polymorphism: Disadvantages of polymorphism Solving the di…… -
04-01 Java switch, for, while, do while statements, loop nesting, jump statements break, continue, return
sentence Switch statement format: Switch statement format: Precautions for switch statement: 根据你键盘录入的字符串，…… -
06-01 Java 2D array format, 2D array memory diagram, 2D array operation
2D array format 1 Format 1 memory diagram: 2D array format 2 Two dimensional array format 2 memory diagram: -
02-01 Java keywords, identifiers, comments, constants and hexadecimal problems, variables and data types
1:关键字 2: Identifier 3:注释 Examples of writing notes 4:常量 5:进制转换 Binary overview and binary, octal and hexade…… -
14-01 Java matches class, pattern class, matcher class
Pattern class Common rules for regular expressions Common functions of regular expressions A: Public Boolean matches (…… -
10-04 Java permission modifiers, classes and their composition common modifiers
Testing of four permission modifiers Class and its composition common modifiers -
06-03 overview of java object-oriented idea, development and design features, definition and use of classes and objects, object memory diagram
Overview of object-oriented thought, development and design characteristics Overview of classes and objects Class defi…… -
08-01 production and use of Java help documents, using the help documents provided by JDK
01_ Help make and use documents Process of making instructions Write a tool class and add document comments to this cl…… -
08-03 Java inheritance
Inheritance format, advantages and disadvantages, overview: Inherited features in Java: Pay attention to the implement…… -
07-01 Java encapsulation
1:成员变量和局部变量的区别 2: If you see that the parameter required by a method is a class name, you should know that…… -
A memory leak analysis of Java
Current environment Code address Git address: background Online troubleshooting First, we need to check on the server.…… -
The difference between Preparedstatement and statement
The difference between Preparedstatement and statement 1. Preparedstatement is precompiled, which can greatly improve …… -
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Paging implementation method
Method 1: the definition of foreground page displays easy UI in pages Every time a page operation or query requests cu…… -
Key notes on Java programming ideas (java development must see)
The Java programming idea is a must read classic for java learning. It is worth reading for both beginners and Daniel.…… -
Introduction to SSM framework and integration tutorial
1.Spring Spring framework is the most widely used framework in Java. Its success comes from the concept rather than th…… -
Java SQL injection learning notes
< H1 id = "0x01 - Introduction" > 1 Introduction The main contents of the article include: JDBC: full name: Java…… -
Usage of substring in Java
substring 1.public String substring(int beginIndex)。 Returns a new string, which is a substring of this string. The s…… -
Java implementation of CORS cross domain request
With the completion of the project, the front end can now obtain the data of the background across domains, which is m…… -
Pointcut is not well-formed: expecting ‘identifier’ at character position 0
The exceptions are as follows: org. springframework. beans. factory. BeanCreationException: Error creating bean with n…… -
Export query results to excle
Input the query results and click export to export the query results to the excle table. The foreground code is: This …… -
Sorting out the knowledge of Java Web Architecture — an interview with ALI
"The best time for you to learn a technology is three years ago, followed by now." That never worked. After this inter…… -
The difference between Java abstract classes and interfaces
Abstract class features: 1 Methods can be constructed in abstract classes Abstract classes can have ordinary propertie…… -
The most complete java learning roadmap — java learning guide
Preparation Applicable / suitable for people: suitable for basic Xiaobai Objective: to master Java se. ● technical poi…… -
Write a learning roadmap for your own Java programmers
The following are some technologies and tools that I have often used in development in recent years. Of course, these ……