Java

Use the Swingwoker class to complete the time-consuming operation:For time-consuming operations in swing, it is common to run in a new thread to prevent the program from "Suspended animation."In java6.0, you can use the Swingwoker class to

Let's take a look at the Execute method of Threadpoolexecutor, which shows what happens after a task is added to the thread pool: Public voidExecute (Runnable command) {if(Command = =NULL) Throw NewNullPointerException (); /*If the

Java Multithreading Fundamentals: The Origins of processes and threadsIn the previous article, we've covered the basics of Java, and now we're going to talk a little bit more difficult: Java concurrency programming. Of course, Java concurrent

Import Java.io.ioexception;import java.io.inputstream;import java.util.properties;/** * The use of the Properties class, The use of this class can be easily taken to the contents of the configuration file * We can read the configuration *

1 Public classtostring{2 Public Static voidMain (string[] args) {3String AA = "Hellow";4 byte[] BB =aa.getbytes ();5 byte[] cc =aa.getbytes ();6 7 System.out.println (AA);8 System.out.println (bb.tostring ());9

Topic Link http://blog.csdn.net/hackbuteer1/article/details/111325671. String filteringEnter a string of lowercase letters (A~Z) through the keyboard. Write a string filter to filter out characters that are not the first occurrence if multiple

Java notes-understanding and using semaphores Semaphore, and using emaphore Use of java Semaphore semaphores:   In javaSemaphores Semaphore. The Semaphore class is a counting Semaphore and must be released by the thread that obtains it,It is

[Spring MVC] learning notes -- Use of FreeMarker, mvc -- freemarker Or paste the example on github. Https://github.com/lemonbar/spring-mvc-freemarker   The official document of Sping-Framework briefly lists how to use freemarker in spring-mvc, but

A red exclamation point in front of the Java project icon and a java project icon Sometimes there is a red exclamation mark in front of the Java project icon, because the jar package introduced by the project does not exist (or is deleted or moved.

Java. util. ConcurrentModificationException in android detailsThis exception was encountered during the android project today. Well, the most common exception is IllegalstateException, Which is thrown by sdks connected to our hardware, I want to die.

Two random number instances: Random Number instances /* import java.util.Random; public class random_1{ public static void main(String[] args) { Random r=new Random(); int a=r.nextInt(); System. out. print ("random number:"

Design Pattern-factory method (Demo)   Factory method   The factory method is the same as that of a simple factory. It is a creation-type design model. It solves the disadvantages of a simple factory's violation of open and closed.   Story Host .....

Fast Algorithm sortingHere is A brief introduction of the pseudo code implementation of quick sorting and: QuickSort (A, p, r) if p

You can view whether eclipse or MyEclipse is 64bit or 32bit. eclipsemyeclipse Method 1: For: eclipse Open eclipse: Help --> About Eclipse --> Installation Details --> Configuration If you see x86, eclipse is 32bit. If you see x86_64 or x64, eclipse

POJ Octal Fractions (JAVA over water) Link: click here ~ Although java simulates the water, I can see a piece of magic code from someone else and share it with you. import java.math.*;import java.util.*;class Main{public static void main(String args[

Algorithm for Finding the maximum child segment and Public class MaxSubSeqSum {/*** algorithm 1, search for */public static final int maxSubSeqSum1 (int seq []) {int length = seq. length; int sum = 0; for (int I = 0; I sum) {sum = theSum ;}} return

Spring_4 _ annotation method dependency Injection The configuration of Web. xml, the PersonDao class, the PersonService class, And the PersonDaoBean class are the same as those in 1. Dependencies need to be added for dependency assembly using

Java ip address to growth integer Method Java ip address to growth integer Method The Code is as follows: /*** Convert the IP address to an integer * @ param ip * @ return */public static Long ip2int (String ip) {Long num = 0L; if (ip = null)

Extended Euclidean Algorithm The original mathematics was not good. When I saw the LRJ mathematical topic, I went online to Baidu to learn how to prove the Extended Euclidean algorithm. First, let's talk about the simple Euclidean algorithm, that is,

Java-based data collection (1)Okay, let's take a look at the above two articles about the collection principle. The rest goes directly to the Code: GerData. java (encapsulation of the data collection method) is actually a simple match regular: group