Java

The producer producer, by definition, is the thread of production data, and the consumer consumer is the thread that uses the data. Can have more than one producer, can also have multiple consumers, when the producer and the consumer is a time, also

Today, in an interview book, I saw an issue with a parameter passing in Java:Writes whether the object in Java is passed as a parameter to a method, is it a value pass, or a reference pass?I have no doubt answered: "Quote pass!" , and also feel very

/**   * Determine if it is a Chinese character   *    * @param str   * @return   */  public Static Boolean ISGBK (String str) {   char[] chars = Str.tochararray ();   boolean ISGBK = false;   for (int i = 0; i    byte[] bytes = ("" + chars[i]

From this point on, I will start to get in touch with the very important part of Java learning-object-oriented programming, and, of course, first and foremost to understand a few important concepts, although they are all textual, but also need

First, let's look at an example:byte [] b=newbyte[]{2,9,43}; string SS=New string (b, "Utf-8"); byte [] b1=ss.getbytes ();In this case, the B and B1 byte arrays are the same.What about the following situation?byte [] b=newbyte[]{-2,-9,43}; string SS=

I'm going to write a tutorial on a series of Java graphical interfaces. Each program tries to write only the most streamlined code needed to keep it running, so everyone can understand it.Using the Java graphical interface requires only jdk,eclipse.

First, inheritance1. Concept of inheritanceInheritance solves code reuse and allows our programming to be closer to human thinking. When multiple classes have the same attributes (variables) and methods, you can abstract the parent class from these

Many Server Load balancer algorithms are available for application scenarios, including Round Robin and HASH) least Connection, Response Time, and Weighted. Hash algorithms are the most commonly used algorithms. A typical application scenario is

What are the differences between runtime exceptions and general exceptions:An exception indicates an abnormal state that may occur during the running of the program,Running exceptions indicate exceptions that may be encountered during common

In the previous article, we briefly understood the struts principles and learned SSH. The first part is the silly learning method. It's okay if people do what they do. Take logon as an example. The Struts configuration steps are summarized as

1. What is Queen N? Place n queens that are not under attack on the chessboard of n × n grids. According to the rules of chess, the queen can attack pawns in the same row, column, or diagonal line. The problem after n is equivalent to placing n

A small Java thread example (like train ticket sales), java thread Public class MyThread extends Thread {private static int ticket = 100; public void run () {for (int I = 0; I 0) system. out. println (Thread. currentThread (). getName () + "selling"

Google guava basic tools and googleguava tools Recently, I used the google cache in the project to learn about some tool classes in guava and the operations on the set. The packages are compared and I don't have time to write them myself. I will

Camel custom component exampleTo customize components in Camel, we need to understand the key concepts in Camel, understand the routing construction and startup processes in Camel, and have related descriptions in the previous article. Here is an

Simple setup of spring-mvc Framework and spring-mvc 1. Download spring package, http://www.springsource.org/download I got a spring-framework-4.0.6.RELEASE. 2. Create a web project and import the. jar package in/WebRoot/lib

JAVA simple Swing graphical interface application example JAVA simple Swing graphical interface application example Package org. rui. hello; import javax. swing. JFrame;/*** simple swing window * @ author lenovo **/public class HelloSwing {public

Object-oriented (Local internal class and anonymous internal class), object-oriented Anonymous /*** Created by rabbit on 2014-08-05.* When the internal class is defined locally,* 1. It cannot be modified by a member modifier.* 2. You can

Java UUID Generator (JUG), uuidjug UG is a Java-only UUID generator. UUID refers to the number generated on a machine, which ensures that all machines in the same time and space are unique. Generally, the platform provides APIs for UUID generation.

I haven't written a blog for a long time. I 've been busy lately, so I'm very busy. It's rare to have a free time tonight. I wrote a blog to summarize one of the most recently completed tasks: the GraceNote Web API is used to develop an application

Switch... standard syntax of case 1 switch (variable to be selected) 2 {3 case value 1: Statement 1; 4 break; 5 case value 2: Statement 2; 6 break; 7 ....... 8 case value n: Statement n; 9 break; 10 default: Statement n + 1; 11 break; 12}