Java

Welcome to the Java web Development GroupHttp://groups.111cn.net/java4webFocus on java and web applications and development!Good study, every day!Main scope of discussion:Java entry, JDK, J2EE, Jsp, Servlet, Struts1.X, Struts2, JSF, Spring,

Streaming Data Between Threads Using PipesThe java. io package provides classes for writing and reading data to and from streams. most of the time, the data is written to or read from a file or network connection. instead of streaming data to a file,

One advantage of Java is that it removes the pointer concept, but many programmers often ignore the difference between objects and references in programming. This article will try to clarify this concept.In addition, Java cannot solve the problem of

The biggest advantage of using Java to write an application is "one-time compilation and running everywhere". However, this does not mean that all Java programs have cross-platform features. In fact, A considerable number of Java programs cannot run

Problem: connect some stringsSolution:Three methods:1. Connect directly with the plus sign. The compiler constructs a StringBuffer object and calls its append method.2. Construct a StringBuffer object by yourself. If you have an append () method, a

IT technology is changing with each passing day, and the emergence of new technologies is dazzling. It seems that every day there are new terms. However, the value IT needs to achieve is nothing more than data collection, which is then presented to

Recently I have written a small program in JAVA, so I am afraid to enjoy it exclusively.This is a four-character hybrid computing program with no optimization or comments. (people always like to be lazy .)This version is already set to version

As we all know, return can only be used in functions with return types, but do functions with return values have to have return? Where can return be used in functions? This is a question to be discussed in this article.-------------------------------

Why is Java so furious?From: China Computer Education News Lu Ning December 19, 2002No one can deny that Java has become so popular. Today, people in the computer industry may ask, "Do you know Java ?", "Have you used Java ?". Java is also popular

Because the work needs to use the connection pool, I read the articles of many predecessors on the Internet and learned a lot of experience. Here I want to make a summary and add my own ideas together, hope to help you.Purpose:Eliminate the overhead

Chinese garbled characters often occur during JSP development, which may affect you, I am writing out the Chinese garbled characters I encountered during JSP development and the solutions for your reference.I. Garbled characters on the JSP pageThe

1. Download j2sdk 1.4.1 or later (http://java.sun.com, it is recommended to download its Java Documentation, which is the Java help Documentation)2.run the newly downloaded j2sdk-00004_000002-windows-i586.exe file for formal installation (The

If you have never used object-oriented language before, you need to understand this concept before writing JAVA code. You need to understand what is an object, what is a class, how is the relationship between an object and a class, and how messages

Because the message digest is unique and irreversible, it is a simple and common encryption method. For example, you can use md5 to encrypt the user password in your application.Package test;Import java. security. MessageDigest;/*** Title: *

Select Java interface or abstract classAuthor: Yu Liangsong selected from: Open system world-Saidi net March 12, 2003Many people have wondered why interfaces instead of abstract classes must be used in some places, and abstract classes instead of

Import java. util .*;Import java. io .*;Public class java2html{Private static boolean comment = false;Private static boolean lineComment = false;Private static boolean START = true;Private static boolean END = false;Private static boolean backslash =

Java Network Programming notesN51. Basic network conceptsChapter2 Basic Network Concepts2.1 NetworksKeywords: network, node, host, address, name, packet-switched, protocolA network is a collection of computers and other devices that can send and

Java Network Programming notesN52. Search for Internet addressesChapter 6 Looking up Internet AddressesThe java.net. InetAddress class encapsulates IP addresses in java. This class is used by most other network classes, including Socket,