Java
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09-01 Java final, polymorphic, abstract class, interface
final Characteristics of final modified variable: Final modifies the initialization timing of variables -
06-02 Java value transfer and data encryption
Value transfer: Java basic type value transfer, reference type value transfer memory diagram: data encryption -
14-02 Java math class, random class, system class, BigDecimal class
Math class Math's method Math. random（） Random class System class System class, which provides some useful fields an…… -
12-01 line breaks caused by nextline() in Java scanner class
分析理解：Scanner sc = new Scanner(system.in); Hasnextint() and nextint() methods of the scanner class import java. u…… -
10-05 overview and explanation of Java internal classes
Overview of internal classes Internal class location How to directly access members of a class inside a member Modifie…… -
13-03 java basic type wrapper class overview, integer class, character
Overview of basic types and packaging classes The advantage of encapsulating basic data types as objects is that more …… -
10-02 in depth study of Java formal parameters and return values, chain programming
Problems with formal parameters and return values: Class name as formal parameter Abstract class name as formal parame…… -
12-02 Java string class
String construction method Characteristics of string: once assigned, it cannot be changed. But references can change I…… -
10-01 comprehensive exercises of Java classes, abstract classes and interfaces — athletes and coaches
Case study of athletes and coaches Case code implementation of sports and coaches -
03-01 Java operator
(1)算术运算符 /Difference between% and%: ++, -- use of operators; Priority of operator: +Usage of: (2) Assignment oper…… -
11-01 detailed tutorial of java development tool eclipse from download, installation to actual use
Introduction to eclipse and MyEclipse Eclipse is an extensible open source ide. Started in April 1999, it was establis…… -
05-01 Java method
method Method definition and format: Method call diagram: Enter two data on the keyboard and compare whether the two n…… -
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…… -
Java 11 is officially released. These new features teach you to write more awesome code
Today, let's take a look at what Java 11 is, what's special about it, and whether to upgrade to Java 11. What's specia…… -
Java exception class structure diagram
< img style="background: #ffffff none repeat scroll 0% 0%;" src="%20http://img.blog.csdn.net/20151023200049836…… -
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Java Engineer book list (elementary, intermediate, advanced)
brief introduction How to learn to grow from a Java junior programmer to a qualified architect, or what kind of techni…… -
On the differences among set, list and map in Java
http://developer.51cto.com/art/201309/410205_all.htm -
Export selected behavior excle
What you want to achieve is to export the selected row. For example, check these two items Export as My front desk is …… -
The difference between super() and this()
1) The call to super () must be written in the first line of the subclass construction method, otherwise the compilati…… -
Java learning roadmap (how to learn java quickly)
Unknowingly, it has been 8 years since I first learned Java. Today I'm here to give some suggestions to my friends…… -
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……