代码示例:
/* * Thread的常用方法 * 1.start():启动线程并执行相应的run()方法 * 2.run():子线程要执行的代码放入run()方法中 * 3.currentThread():静态的,调取当前的线程 * 4.getName():获取此线程的名字 * 5.setName():设置此线程的名字 * 6.yield():调用此方法的线程释放当前CPU的执行权 * 7.join():在A线程中调用B线程的join()方法,表示:当执行到此方法, * A线程停止执行,直至B线程执行完毕,A线程再接着join()之后的代码执行 * 8.isAlive():判断当前线程时候还存活 * 9.sleep(long ms):显式地让当前线程睡眠ms毫秒 * 10.线程通信:wait() notify() notifyAll() * * 设置线程优先级 * getPriority():返回线程优先值 * setPriority(int newPriority):改变线程的优先级 * */ public class TestThread1 { public static void main(String[] args) { SubThread1 st1 = new SubThread1(); st1.setName("子线程1"); st1.setPriority(Thread.MAX_PRIORITY); //1-10 优先级大不代表一定能抢到执行权,只是概率上变大了而已 st1.start(); Thread.currentThread().setName("========主线程"); for (int i = 1; i <= 100; i++) { System.out.println(Thread.currentThread().getName() + ":" + Thread.currentThread().getPriority() + ":" + i); // if (i % 10 == 0) { // Thread.currentThread().yield(); // } // if (i == 20) { // try { // st1.join(); // } catch (InterruptedException e) { // e.printStackTrace(); // } // } } System.out.println(st1.isAlive()); } } class SubThread1 extends Thread { @Override public void run() { for (int i = 1; i <= 100; i++) { System.out.println(Thread.currentThread().getName() + ":" + Thread.currentThread().getPriority() + ":" + i); // try { // Thread.currentThread().sleep(1000); // } catch (InterruptedException e) { // e.printStackTrace(); // } } } }
结果:
========主线程:5:1
========主线程:5:2
========主线程:5:3
========主线程:5:4
========主线程:5:5
========主线程:5:6
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========主线程:5:9
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========主线程:5:11
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========主线程:5:13
========主线程:5:14
========主线程:5:15
========主线程:5:16
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========主线程:5:18
========主线程:5:19
========主线程:5:20
========主线程:5:21
========主线程:5:22
========主线程:5:23
========主线程:5:24
========主线程:5:25
========主线程:5:26
========主线程:5:27
========主线程:5:28
========主线程:5:29
========主线程:5:30
========主线程:5:31
========主线程:5:32
========主线程:5:33
========主线程:5:34
========主线程:5:35
========主线程:5:36
========主线程:5:37
========主线程:5:38
========主线程:5:39
========主线程:5:40
========主线程:5:41
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========主线程:5:43
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========主线程:5:53
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========主线程:5:60
========主线程:5:61
========主线程:5:62
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========主线程:5:64
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========主线程:5:76
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========主线程:5:80
========主线程:5:81
========主线程:5:82
========主线程:5:83
========主线程:5:84
========主线程:5:85
========主线程:5:86
子线程1:10:1
========主线程:5:87
子线程1:10:2
========主线程:5:88
子线程1:10:3
========主线程:5:89
子线程1:10:4
========主线程:5:90
子线程1:10:5
========主线程:5:91
子线程1:10:6
========主线程:5:92
子线程1:10:7
========主线程:5:93
子线程1:10:8
========主线程:5:94
子线程1:10:9
========主线程:5:95
子线程1:10:10
========主线程:5:96
子线程1:10:11
========主线程:5:97
子线程1:10:12
========主线程:5:98
子线程1:10:13
========主线程:5:99
子线程1:10:14
========主线程:5:100
子线程1:10:15
true
子线程1:10:16
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子线程1:10:27
子线程1:10:28
子线程1:10:29
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子线程1:10:31
子线程1:10:32
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子线程1:10:89
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子线程1:10:100