Java基础学习总结多线程的实现

public class MyThread extends Thread {private String name;public MyThread(String name) {this.name &＃61; name;}&＃64;Overridepublic void run() {for(int i&＃61;0; i<10; i&＃43;&＃43;) {System.out.println(name &＃43; "打印&＃xff1a;" &＃43; i);}}public static void main(String[] args) {MyThread mt1 &＃61; new MyThread("线程A");MyThread mt2 &＃61; new MyThread("线程B");MyThread mt3 &＃61; new MyThread("线程C");mt1.start();mt2.start();mt3.start();}
}

public class MyThread extends Thread {private String name;public MyThread(String name) {this.name &＃61; name;}&＃64;Overridepublic void run() {for(int i&＃61;0; i<5; i&＃43;&＃43;) {System.out.println(name &＃43; "打印&＃xff1a;" &＃43; i);}}public static void main(String[] args) {MyThread mt1 &＃61; new MyThread("线程A");MyThread mt2 &＃61; new MyThread("线程B");MyThread mt3 &＃61; new MyThread("线程C");mt1.run();mt2.run();mt3.run();}
}

public synchronized void start() {if (threadStatus !&＃61; 0)throw new IllegalThreadStateException();group.add(this);boolean started &＃61; false;try {start0();started &＃61; true;} finally {try {if (!started) {group.threadStartFailed(this);}} catch (Throwable ignore) {}}
}
private native void start0();

package test;public class MyThread implements Runnable {private String name;public MyThread(String name) {this.name &＃61; name;}&＃64;Overridepublic void run() {for(int i&＃61;0; i<5; i&＃43;&＃43;) {System.out.println(name &＃43; "打印&＃xff1a;" &＃43; i);}}public static void main(String[] args) {MyThread mt1 &＃61; new MyThread("线程A");MyThread mt2 &＃61; new MyThread("线程B");MyThread mt3 &＃61; new MyThread("线程C");new Thread(mt1).start();new Thread(mt2).start();new Thread(mt3).start();}
}

//使用Thread类实现public class MyThread extends Thread {private String name;int tickets &＃61; 5;public MyThread(String name) {this.name &＃61; name;}&＃64;Overridepublic void run() {while(tickets>0) {System.out.println(name &＃43; "买票出一张票&＃xff0c;剩余票数&＃xff1a;" &＃43; (--tickets));}}public static void main(String[] args) {MyThread mt1 &＃61; new MyThread("线程A");MyThread mt2 &＃61; new MyThread("线程B");MyThread mt3 &＃61; new MyThread("线程C");mt1.start();mt2.start();mt3.start();}
}/*
线程C买票出一张票&＃xff0c;剩余票数&＃xff1a;4
线程A买票出一张票&＃xff0c;剩余票数&＃xff1a;4
线程B买票出一张票&＃xff0c;剩余票数&＃xff1a;4
线程A买票出一张票&＃xff0c;剩余票数&＃xff1a;3
线程C买票出一张票&＃xff0c;剩余票数&＃xff1a;3
线程A买票出一张票&＃xff0c;剩余票数&＃xff1a;2
线程B买票出一张票&＃xff0c;剩余票数&＃xff1a;3
线程A买票出一张票&＃xff0c;剩余票数&＃xff1a;1
线程C买票出一张票&＃xff0c;剩余票数&＃xff1a;2
线程C买票出一张票&＃xff0c;剩余票数&＃xff1a;1
线程A买票出一张票&＃xff0c;剩余票数&＃xff1a;0
线程B买票出一张票&＃xff0c;剩余票数&＃xff1a;2
线程B买票出一张票&＃xff0c;剩余票数&＃xff1a;1
线程B买票出一张票&＃xff0c;剩余票数&＃xff1a;0
线程C买票出一张票&＃xff0c;剩余票数&＃xff1a;0
*/

//使用Runnable接口实现public class MyThread implements Runnable {int tickets &＃61; 5;&＃64;Overridepublic void run() {while(tickets>0) {System.out.println(Thread.currentThread().getName() &＃43; "买票出一张票&＃xff0c;剩余票数&＃xff1a;" &＃43; (--tickets));}}public static void main(String[] args) {MyThread mt &＃61; new MyThread();new Thread(mt,"线程A").start();new Thread(mt,"线程B").start();new Thread(mt,"线程C").start();}
}/*
线程B买票出一张票&＃xff0c;剩余票数&＃xff1a;3
线程A买票出一张票&＃xff0c;剩余票数&＃xff1a;4
线程C买票出一张票&＃xff0c;剩余票数&＃xff1a;2
线程A买票出一张票&＃xff0c;剩余票数&＃xff1a;0
线程B买票出一张票&＃xff0c;剩余票数&＃xff1a;1
*/

//同一个线程不能重复启动&＃xff0c;否则会出现异常public class MyThread extends Thread {int tickets &＃61; 5;&＃64;Overridepublic void run() {while(tickets>0) {System.out.println("买票出一张票&＃xff0c;剩余票数&＃xff1a;" &＃43; (--tickets));}}public static void main(String[] args) {MyThread mt &＃61; new MyThread();mt.start();mt.start();mt.start();}
}/*
Exception in thread "main" 买票出一张票&＃xff0c;剩余票数&＃xff1a;4
买票出一张票&＃xff0c;剩余票数&＃xff1a;3
买票出一张票&＃xff0c;剩余票数&＃xff1a;2
买票出一张票&＃xff0c;剩余票数&＃xff1a;1
买票出一张票&＃xff0c;剩余票数&＃xff1a;0
java.lang.IllegalThreadStateExceptionat java.lang.Thread.start(Unknown Source)at test.MyThread.main(MyThread.java:17)
*/