Java

Performance issues with Java EE applications are a very important issue for serious projects and products. In particular, enterprise-class applications, concurrent users, a large number of data transmission, business logic complex, occupy more

What is the impression that the Java system makes? Take up memory! Say this sentence will have more than n people stand up for the Java defense, and a bunch of performance test reports to prove this point. In fact, in theory, the Java system does

Then the idea of the previous section said that a webpage to be able to display correctly in the browser, you need to maintain the same code in three places: Web page file, Web page encoding declaration and browser coding settings. The first is the

This series explores the technical aspects that will determine the development of today's and future Java™ development. Java Development 2.0 will be developed faster and faster, thanks to innovation in the open source field and the commercialization

About 5 things you don't know about Java performance Monitoring-part 2nd: Java process monitoring with JDK built-in analyzer Fully functional built-in analyzers, such as Jconsole and VISUALVM, are sometimes more expensive than their performance

One of the best known advantages of Java technology is that, unlike other languages such as C programmers, Java programmers do not have to be responsible for daunting memory allocations and releases. The Java runtime can manage these tasks for you.

Write a class that creates and reads a ZIP file with java.util.zip Share with you There's a recursive call inside. Oh Recently used a lot of recursive calls! Have a short summary! /** Testzip.java coding by Serol Luo. rollingpig@163.com 200

As we all know, in the C language, we can FILE get the __LINE__ file name and line number through the macro, in the Java language, you can StackTraceElement get the file name, class name, method name, line number from the class, the code is as

Java is a fully object-oriented language. Java through the virtual machine operating mechanism to achieve the "cross-platform" concept. I would like to present a tutorial for beginners, I hope to be useful to everyone. "Hello world!" First look at

Are class locks and object locks conflicting? are object locks and private locks conflicting? Explained by an instance. I. Relevant agreement To clarify the description of the following article, first of all the relevant definitions of the lock

In the first two articles, we implemented synchronous/asynchronous texting and restricted the frequency of texting. In this article, we introduce the number of times you limit daily messages to the same user (based on cell phone number and IP) 1.

BeginIn this article, I'll show you how to build some simple Comet-style WEB applications using a variety of Java technologies. Readers should have some knowledge of Java Servlet, Ajax, and JavaScript. We'll look at some of the features that support

Ajax| Program | dynamic "Guide" in this article, the author Philip McCarthy introduces the experience of creating dynamic Web applications through a background channel approach.

Create | objects Effective Java Learning notes the Java language supports four basic types: interface (Interface), Class (Class), array (array), and primitive type (primitive). The first three types are often referred to as reference types

In some cases, you might want to implement your own data or language parser in Java, perhaps in a format or language that lacks standard Java or open source parsers to use. Or, while there are existing parser implementations, they are either too

An introduction to the type of Enum The enumeration type (enumerated type) appears early in the programming language and is used to include a similar set of values into one type. The name of this enumeration type is defined as a unique type

Introduction Web application Server Now a lot of people are using, but what is the Web application server, what does it have to do with the Web server, what is the relationship between it and the application server, it is one of them two, or a

Write an OpenID provider for single sign-on authentication Introduction: In this article, you will learn how to use OpenID to secure Java Web application resources to prevent damage by unauthenticated users. In the 2nd part of the series that

The Disadvantage of using a Java collection is the loss of type information when an object is placed in a collection. This happens because the programmer at the time of the collection did not know exactly what type the user wanted to put into the

first, the new test projectCreate a new MAVEN project MybatisDemo2, modify Pom.xml to introduce dependencies. Dependencies added on the previous sectionDependency> groupId>Org.mybatis.generatorgroupId>