Java

First, prepare the article1 What is Java EE. It is different from ordinary java.A: Java EE is all called Java2 Platform, Enterprise Edition."The Java-EE platform is essentially a distributed server application design environment--a java-based

Java Open Source SOCKET framework The Java version of Ice, Netty2 the author's follow-up to the Apache Mina,crmky Cindy, there is a super simple quickserver, so you concentrate on writing your own business code, do not write a line of TCP code.

Today we'll talk about Java exception issues. In fact, in the development process of Java exception processing is not as simple as the imagination, simply say Java deficiencies, then the exception handling mechanism can also be counted as a

Today, the project on the company server has been running, the log in many places Java.io.IOException:read past EOF error, but also with compass Related: org.compass.core.engine.SearchEngineException:Failed to check if the index is compound; Nested

Get method call stack information at run time (Java) Sometimes in order to debug a program or to print information, we need to get the information of the program dispatch stack during the program run, Java can get the method call stack information

The original question http://blog.csdn.net/smcwwh/article/details/7315041, oneself do some experience 1. public static void Main (string[] args) { int k = 0; int ret = ++k + k++ + ++k + k; The value of the RET is how

Core Java- concept Chapter If you need to know which Unicode characters belong to the Java alphabet, you can use the Javaidentifierstart and Javaidentifierpart methods of the Charactor class to detect Const is a reserved word for Java, but it is

Using Java to implement serial communication (under Windows System), we need to use the serial javacomm20-win32.zip provided by Sun. There are three files to use, configured as follows: 1.comm.jar placed to Java_home/jre/lib/ext;2.win32com.dll

When the file stream is positioned to the end, the data can no longer be read by the input stream. If you use the Read () method to return 1, if you call the available () method to return 0, to re-read, you use the mark and reset methods. To start

Analysis: Class array{//representation array private int temp[]; Integer array private int foot; Define Add location public Array (int len) {if (len>0) {this.temp = new Int[len]; }else{this.temp = new int[1];//Minimum maintenance space is 1}}

Package util; Import java.util.*;Import java.text.*; /*** A DateTime defines some convenient formatting operations for date and time** @version 1.0* @author Markhuang*/public class DateTime {/*** Store time and date, default current time and date*/

StringTokenizer tokenizer = new StringTokenizer (number, ","); boolean bool = true; while (Tokenizer.hasmoretokens ()) { try { Double.valueof (Tokenizer.nexttoken ()); catch (Exception e) { bool = false; } } How to convert a string to an array int

As we all know, the map structure in Java is stored key-->value key value pairs, and according to the characteristics of the map, there are no two key elements in the same map, and value does not have this limitation. In other words, the key in the

The simple explanation is: Short connection: Establish a connection, send a packet, close the connection Long connection: Establish a connection, send a packet, send a heartbeat packet, send a packet, send a heartbeat packet, send a heartbeat packet

In the field of Object-oriented programming, a class is inherited from a class, such as a parent-child relationship in the Java world that requires only the extends keyword to determine the two classes, but in the world of relational databases,

You can modify the Java installation directory on line 3rd to set Java_home, ClassPath, and append to the front of the path. Java_home=c:\program

This article describes how to use regular expressions in Java to work with text data. A regular expression is a string, but unlike a regular string, a regular expression is an abstraction of a set of similar strings, such as the following strings:a98

The concept of a 1.Java reflection mechanism: In the Java run-time environment, you can know which properties and methods of this class exist for any class. Can call any one of its methods for any object. The answer is yes. The ability to

MD5 Encryption Algorithm 2007-08-30 19:06 Import java.lang.reflect.*;/*************************************************The MD5 class implements the RSA Data Security, Inc., which is submitted to the IETFThe MD5 message-digest algorithm

Creating and destroying objects Consider replacing constructors with static factory methods Consider using the builder when you encounter multiple constructor parameters Hardening the Singleton property with a private constructor or