Java

( i): basic interaction: A simple component that gets the user's input or display status. 1. Button (JButton): Text can prompt shortcut keys, can be placed relative to the icon, using ActionListener;2. check box (jcheckbox): You can select or cancel,

One1, the core of object-oriented thinking:　　Encapsulation, inheritance, polymorphism.2, the pursuit of object-oriented programming:Cohesion-poly low-coupling solution;Modular design of the code;3, what is the design mode:The classic solution for

Title Description:Suppose a rotated sorted array whose starting position is unknown (e.g. 0 1 2 4 5 6 7 May become 4 56 7 0 1 2).You need to find the smallest of these elements.You can assume that there are no duplicate elements in the array.Code

The use of Java collection classes can be said to be ubiquitous, the total we can be divided into three chunks, respectively, from the collection interface extension of the list, set and the form of key-value pairs to store the map type collection. 

Regardless of whether you are concerned, Java Web applications use a thread pool to handle requests more or less. The implementation details of the thread pool may be overlooked, but the use and tuning of the thread pool is something that needs to

1. [Code][java] Code1: Before compressing, to set up Linux mode, need to use third party Ant-1.6.5.jarIf it is a file directory, theZipEntry zipentry=new zipentry (BasePath + system.getproperties (). GetProperty

With the development of the Internet, the traditional HTTP protocol has been difficult to meet the increasingly complex needs of web applications. In recent years, with the birth of HTML5, the WebSocket protocol has been proposed, it realizes full

Small white Study the arduous course!I'm only talking about the latest version of Eclipse since servelt3.0 Servelt and filter Do not have to be configured in Web. XML, personal understanding of Servelt and filter is not too deep, but since servelt3.0

The string class is a special class, the main embodiment is that it has many forms of creation, for example, string a = "abc"; Sting a=new ("abc"), the apparent results appear to be the same, but in fact the creation mechanism inside Java is very

JSP standard tag Library: JSTL, jsp standard tag jstl JSTL (JSP Standard Tag Library), JSP Standard Tag Library, can be embedded in jsp pages to complete business logic and other functions in the form of tags. The purpose of jstl is to replace the

Basic use of Quartz, use of Quartz 1. Quartz Overview: in simple terms, it is a java timing task framework. It is not so complicated to explain, just like the timer at the front end. Before learning about it, familiarize yourself with several

Java multi-thread join Method Instance code, java multi-thread join instance This article focuses on the use of join methods in Java multithreading. The following is an example. The non-static join () method of Thread allows A Thread B to "join" to

Spring + netty Server SETUP method, springnetty Games are generally persistent connections, custom protocols, and http protocols are not required, BIO, NIO, or AIO. I now use spring + netty to build a simple game server Ideas: 1. custom protocol and

Java Development Tool Eclipse tips: global search and replacement, eclipse tips This article focuses on global search and replacement in Eclipse. Let's take a look at the specific operation methods. Eclipse global search procedure Press the

Java callback function and observer mode instance code, callback function observer This article focuses on the implementation of Java callback functions and observer mode. The specific introduction and implementation code are as follows. Observer

An article reads Java concurrency and thread security, and understands java concurrent threads I. Preface For a long time, I have been trying to analyze the essence of Java thread security. However, I had to put it on hold because I had some

Java replaces the word document text and inserts an image at a specified position, and word inserts an image. First, describe the dependent package. org. apache. poi poi-excelant 3.12 org. apache. poi poi-scratchpad 3.12 org. apache.

Deep Learning on Java multi-thread programming lock optimization and java multi-thread programming Body When programming in a concurrent environment, you need to use a lock mechanism to synchronize operations between multiple threads to ensure

Java Network Programming-TCP communication and simple file upload function instance, tcp File Upload TCP communication needs to be clarified: Tcp communication is connection-oriented. You need to start the server and then the client. Both the client

Java Image Processing-chamfer distance transformation, java Image Processing-Chamfering Chamfer Distance Transform in image processing is often used in object matching recognition. The algorithm basically generates the Distance value of each pixel