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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>1.11. Thread 线程</title><link rel="stylesheet" type="text/css" href="..//docbook.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="home" href="../index.html" title="Netkiller Java 手札" /><link rel="up" href="../java.html" title="第 1 章 Java" /><link rel="prev" href="../java/lang/reflect/index.html" title="1.10. Reflection 反射" /><link rel="next" href="../javax/script/index.html" title="1.12. java 脚本引擎" /></head><body><a xmlns="" href="//www.netkiller.cn/">Home</a> |
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<a xmlns="" href="//www.netkiller.cn/home/about.html">About</a><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">1.11. Thread 线程</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="../java/lang/reflect/index.html">上一页</a> </td><th width="60%" align="center">第 1 章 Java</th><td width="20%" align="right"> <a accesskey="n" href="../javax/script/index.html">下一页</a></td></tr></table><hr /></div><table xmlns=""><tr><td><iframe src="//ghbtns.com/github-btn.html?user=netkiller&repo=netkiller.github.io&type=watch&count=true&size=large" height="30" width="170" frameborder="0" scrolling="0" style="width:170px; height: 30px;" allowTransparency="true"></iframe></td><td><iframe src="//ghbtns.com/github-btn.html?user=netkiller&repo=netkiller.github.io&type=fork&count=true&size=large" height="30" width="170" frameborder="0" scrolling="0" style="width:170px; height: 30px;" allowTransparency="true"></iframe></td><td><iframe src="//ghbtns.com/github-btn.html?user=netkiller&type=follow&count=true&size=large" height="30" width="240" frameborder="0" scrolling="0" style="width:240px; height: 30px;" allowTransparency="true"></iframe></td></tr></table><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="index"></a>1.11. Thread 线程</h2></div></div></div>
<p></p>
<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="idp46"></a>1.11.1. 实现异步执行</h3></div></div></div>
<pre class="programlisting">
public void testThread() throws Exception {
try {
Thread sendmail = new Thread(new Runnable() {
@Override
public void run() {
// Sendmail
log.info("Sendmail OK");
}
});
sendmail.setName("sendmail");
sendmail.start();
} catch (Exception e) {
e.printStackTrace();
}
}
</pre>
<p></p>
</div>
<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Thread"></a>1.11.2. 继承 Thread 类实现多线程</h3></div></div></div>
<pre class="programlisting">
package cn.netkiller.ipo.test;
public class MyThread extends Thread {
private String name;
public MyThread(String name) {
super();
this.name = name;
}
public void run() {
for (int i = 0; i < 10; i++) {
System.out.println("Thread:" + this.name + ",i=" + i);
}
}
public static void main(String[] args) {
MyThread mt1 = new MyThread("A");
MyThread mt2 = new MyThread("B");
mt1.start();
mt2.start();
}
}
</pre>
<p></p>
</div>
<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Runnable"></a>1.11.3. 实现 Runnable 接口</h3></div></div></div>
<pre class="programlisting">
package cn.netkiller.ipo.test;
public class MyRunnable implements Runnable {
private String name;
public MyRunnable(String name) {
this.name = name;
}
@Override
public void run() {
for (int i = 0; i < 10; i++) {
System.out.println("Thread:" + this.name + ",i=" + i);
}
}
public static void main(String[] args) {
MyRunnable mr1 = new MyRunnable("A");
MyRunnable mr2 = new MyRunnable("B");
new Thread(mr1).start();
new Thread(mr2).start();
new Thread(new MyRunnable("C")).start();
}
}
</pre>
</div>
<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="synchronized"></a>1.11.4. 线程同步</h3></div></div></div>
<pre class="programlisting">
package cn.netkiller.thread;
public class SynchronizedThread extends Thread {
private int count = 0;
@Override
public /*synchronized*/ void run() {
count++;
System.out.println(Thread.currentThread().getName() + " count:" + count);
}
public static void main(String[] args) {
SynchronizedThread myThread = new SynchronizedThread();
Thread thread1 = new Thread(myThread, "thread1");
Thread thread2 = new Thread(myThread, "thread2");
Thread thread3 = new Thread(myThread, "thread3");
Thread thread4 = new Thread(myThread, "thread4");
Thread thread5 = new Thread(myThread, "thread5");
thread1.start();
thread2.start();
thread3.start();
thread4.start();
thread5.start();
}
}
</pre>
<p>线程运行不分先后</p>
<pre class="screen">
thread2 count:3
thread4 count:4
thread1 count:3
thread3 count:3
thread5 count:5
</pre>
<pre class="programlisting">
package cn.netkiller.thread;
public class SynchronizedThread extends Thread {
private int count = 0;
@Override
public synchronized void run() {
count++;
System.out.println(Thread.currentThread().getName() + " count:" + count);
}
public static void main(String[] args) {
SynchronizedThread myThread = new SynchronizedThread();
Thread thread1 = new Thread(myThread, "thread1");
Thread thread2 = new Thread(myThread, "thread2");
Thread thread3 = new Thread(myThread, "thread3");
Thread thread4 = new Thread(myThread, "thread4");
Thread thread5 = new Thread(myThread, "thread5");
thread1.start();
thread2.start();
thread3.start();
thread4.start();
thread5.start();
}
}
</pre>
<pre class="screen">
thread1 count:1
thread5 count:2
thread4 count:3
thread2 count:4
thread3 count:5
</pre>
<pre class="programlisting">
package cn.netkiller.thread;
public class MultiThread {
private static int count = 0;
public synchronized void add() {
count++;
System.out.println(Thread.currentThread().getName() + " count:" + count);
}
public static void main(String[] args) throws InterruptedException {
final MultiThread multiThread1 = new MultiThread();
final MultiThread multiThread2 = new MultiThread();
final MultiThread multiThread3 = new MultiThread();
final MultiThread multiThread4 = new MultiThread();
final MultiThread multiThread5 = new MultiThread();
new Thread(new Runnable() {
public void run() {
multiThread1.add();
}
}).start();
new Thread(new Runnable() {
public void run() {
multiThread2.add();
}
}).start();
new Thread(new Runnable() {
public void run() {
multiThread3.add();
}
}).start();
new Thread(new Runnable() {
public void run() {
multiThread4.add();
}
}).start();
new Thread(new Runnable() {
public void run() {
multiThread5.add();
}
}).start();
}
}
</pre>
</div>
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