Java
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Two code examples for Java to obtain disk space
This article shares two pieces of code to obtain disk space, for reference. Code 1: Operation results Code 2: result: …… -
Implementation and application of Java checkbox tree
When using java swing to develop UI programs, you may encounter the need to use the tree with check box, but Java Swin…… -
Mybatis gets the self growing field value (ID) of the inserted record
Step 1: Add the properties "usegeneratedkeys" and "keyproperty" in the mybatis mapper file, where keyproperty is the p…… -
Java programming to print shopping receipt implementation code
Briefly introduce the operating environment: Language: Java Tool: Eclipse System: windows7 (there is no printing devic…… -
Analysis of zookeeper Java API programming example
In this example, we use Java 3 Version 4.6, examples are convenient for everyone. If you don't understand after learni…… -
On the difference between Maven’s jar package and war package and the packaging method
Jar files include Java ordinary classes, resource files and ordinary files. In maven, you can package all files under …… -
Java redis operation details
1. Introduction Redis is an open source (BSD licensed) in memory key value storage system, which can be used as databa…… -
Java comes with an encryption class messagedigest class code example
Messagedigest class Messagedigest class provides the application with the function of information summarization algori…… -
Gossip – learn more about spring
WHY At the beginning of its birth, the main purpose of creating spring was to replace more heavyweight enterprise Java…… -
Java thread pool work queue saturation policy code example
Thread pool is a practical tool for collecting parallel execution tasks. With the introduction of multi-core architect…… -
Implementation of servlet graphic verification code function in Java Web Development
I. origin of verification code In Web project development, in order to prevent some people from using automatic tools …… -
Analysis of runtime data area of Java virtual machine
JVMmemorymodel This article mainly introduces the runtime data areas described in the JVM specification. These areas a…… -
Spring configuration file encryption method example
The spring configuration file is a "drawing" used to guide the spring factory in bean generation, dependency injection…… -
Java & JavaScript custom encrypted data transmission code example
In the process of developing applications, the client and server often need to transmit data. When important privacy i…… -
Use of break, continue and return in the for loop in Java
Introduction: when using a loop, it is often confused when there are break, continue and return in the loop. Today, I …… -
Java read and write Properties file to solve the problem of Chinese garbled code
Generally, the properties configuration file is used in spring projects, which is directly read by the framework. Of c…… -
Example of combining spring boot with rabbitmq to implement delay queue
background What is a delay queue? As the name suggests, a delay queue is a queue in which messages entering the queue …… -
Detailed explanation of reentrantlock and condition in Java multithreading
1、 Reentrantlock class 1.1 what is reentrantlock java. util. concurrent. The lock framework in lock is an abstraction…… -
Through Java util. Treemap source code to enhance the understanding of red and black trees
Before that, the programming tips have sorted out a lot of ideas and solutions about the red black tree of classical p…… -
Basic concept analysis and code example of Java data structure tree
The storage structure of tree in Java is different from linear structures such as linear table, stack and queue. Tree …… -
The spring framework implements the file upload function
There are many ways to upload files in Java, such as SmartUpload or strus2. This article shares the use of multipartfi…… -
Example of Java algorithm for solving Full Permutation Problem Based on recursion
This paper describes the Java algorithm based on recursion to solve the full permutation problem. Share with you for y…… -
Steps of developing wechat sharing interface with Java
Some small steps of java development of wechat sharing interface are as follows 1. Configure interface information for…… -
Spring static proxy and dynamic proxy code explanation
Key points of this section: Java static proxy and JDK dynamic proxy 1 problems encountered in object-oriented design I…… -
Implementation of quick sorting algorithm in Java
Principle of quick sort: select a key value as the benchmark value. The sequence smaller than the benchmark value is o…… -
Principle of linked list and Java implementation code example
1： Basic introduction to one-way linked list A linked list is a data structure at the same level as an array. For exa…… -
Implementation of reference and dynamic proxy in Java
As we know, the difference between dynamic agent (JDK's dynamic agent here) and static agent is that its real agent cl…… -
Understanding of subclass overriding parent method in Java programming
The subclass re implements the method of the parent class; When rewriting, you can modify the access right modifier an…… -
Implementation of file download progress of retrofit + rxjava
preface Recently, I was learning about retrofit. Although retrofit does not provide a callback of file download progre…… -
Synchronization code example of Java Concurrent Programming
Synchronizers are objects that enable a thread to wait for another thread, allowing them to coordinate actions. The mo…… -
Implementation of priority queue function based on Java heap structure
This paper describes the implementation of priority queue function in Java based on heap structure. Share with you for…… -
Principle of multimode string matching algorithm and Java implementation code
Multimode string matching algorithm here refers to the problem of finding multiple pattern character strings in a stri……