Java 实例 - 线程优先级设置
以下实例演示了如何通过setPriority() 方法来设置线程的优先级:
SimplePriorities.java 文件
publicclassSimplePrioritiesextendsThread{privateintcountDown = 5;
privatevolatiledoubled = 0;
publicSimplePriorities(intpriority){setPriority(priority);
start();
}publicStringtoString(){returnsuper.toString() + ": " + countDown;
}publicvoidrun(){while(true){for(inti = 1; i < 100000; i++)d = d + (Math.PI + Math.E) / (double)i;
System.out.println(this);
if(--countDown == 0)return;
}}publicstaticvoidmain(String[]args){newSimplePriorities(Thread.MAX_PRIORITY);
for(inti = 0; i < 5; i++)newSimplePriorities(Thread.MIN_PRIORITY);
}}
以上代码运行输出结果为:
Thread[Thread-1,1,main]: 5 Thread[Thread-2,1,main]: 5 Thread[Thread-3,1,main]: 5 Thread[Thread-0,10,main]: 5 Thread[Thread-3,1,main]: 4 Thread[Thread-0,10,main]: 4 Thread[Thread-1,1,main]: 4 Thread[Thread-5,1,main]: 5 Thread[Thread-4,1,main]: 5 Thread[Thread-2,1,main]: 4 Thread[Thread-0,10,main]: 3 Thread[Thread-1,1,main]: 3 Thread[Thread-4,1,main]: 4 Thread[Thread-2,1,main]: 3 ……