1.继承Thread类
package xiancheng;
public class learnThread {
//3个线程 主线程 CodingThread DownloadThread
public static void main(String[] args) {
long beginTime = System.currentTimeMillis();
Thread cThread = new CodingThread();
cThread.start();//调度程序
Thread dThread = new DownloadThread();
dThread.start();//调度程序
long endTime = System.currentTimeMillis();
long time = endTime - beginTime;
System.out.println("程序共执行了"+time);
}
}
class CodingThread extends Thread{
public void run() {
long beginTime = System.currentTimeMillis();
for(int i=1; i<=100; i++) {
try {
Thread.sleep(10);
System.out.println("正在写第"+ i+"行代码");
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
long endTime = System.currentTimeMillis();
long time = endTime - beginTime;
System.out.println("CodingThread程序共执行了"+time);
}
}
class DownloadThread extends Thread{
public void run() {
long beginTime = System.currentTimeMillis();
for(int i=1; i<=100; i++) {
try {
Thread.sleep(10);
System.out.println("正在下载第"+ i+"集电视剧");
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
long endTime = System.currentTimeMillis();
long time = endTime - beginTime;
System.out.println("DownloadThread程序共执行了"+time);
}
}
2.实现Runnable接口的类的实例
package xiancheng;
public class LearnRunnable {
public static void main(String[] args) {
Thread cThread = new Thread(new CodinThread());
cThread.start();//调度程序
Thread dThread = new Thread(new DownloaThread());
dThread.start();//调度程序
}
}
class CodinThread implements Runnable{
public void run() {
long beginTime = System.currentTimeMillis();
for(int i=1; i<=100; i++) {
try {
Thread.sleep(10);
System.out.println("正在写第"+ i+"行代码");
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
long endTime = System.currentTimeMillis();
long time = endTime - beginTime;
System.out.println("CodingThread程序共执行了"+time);
}
}
class DownloaThread implements Runnable{
public void run() {
long beginTime = System.currentTimeMillis();
for(int i=1; i<=100; i++) {
try {
Thread.sleep(10);
System.out.println("正在下载第"+ i+"集电视剧");
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
long endTime = System.currentTimeMillis();
long time = endTime - beginTime;
System.out.println("DownloadThread程序共执行了"+time);
}
}
- Callable
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sychronized(this)方法/（object）
cThread.setDeamon(true);守护线程
cThread.join()
wait()/notify
死锁：连个线程同时争夺两个资源，各自获得一个资源，等待另一个
解决：保证拿资源的顺序是相同的
有英文基础的同学建议直接学习
Oracle的官方文档：
http://docs.oracle.com/javase/tutorial/essential/concurrency/
多线程的相关问题，大家参考下面的链接：
