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法学在 Java 中更改线程优先级
可以通过实现 Runnable 接口并重写 run() 方法来创建一个线程。然后可以创建一个 Thread 对象并调用 start() 方法。
线程优先级决定了将处理器提供给线程以及其他资源的时间。可以使用 Thread 类的 setPriority() 方法来更改它。
以下给出了一个程序，演示如何在 Java 中使用 setPriority() 方法更改线程优先级
示例
public class ThreadDemo extends Thread {
public void run() {
System.out.println("Running...");
}
public static void main(String[] args) {
ThreadDemo thread1 = new ThreadDemo();
ThreadDemo thread2 = new ThreadDemo();
ThreadDemo thread3 = new ThreadDemo();
ThreadDemo thread4 = new ThreadDemo();
ThreadDemo thread5 = new ThreadDemo();
System.out.println("Default thread priority of Thread 1: " + thread1.getPriority());
System.out.println("Default thread priority of Thread 2: " + thread2.getPriority());
System.out.println("Default thread priority of Thread 3: " + thread3.getPriority());
System.out.println("Default thread priority of Thread 4: " + thread4.getPriority());
System.out.println("Default thread priority of Thread 5: " + thread5.getPriority());
System.out.println("
Changing the default thread priority using the setPriority() method");
thread1.setPriority(7);
thread2.setPriority(3);
thread3.setPriority(9);
thread4.setPriority(2);
thread5.setPriority(8);
System.out.println("
Changed thread priority of Thread 1: " + thread1.getPriority());
System.out.println("Changed thread priority of Thread 2: " + thread2.getPriority());
System.out.println("Changed thread priority of Thread 3: " + thread3.getPriority());
System.out.println("Changed thread priority of Thread 4: " + thread4.getPriority());
System.out.println("Changed thread priority of Thread 5: " + thread5.getPriority());
System.out.println("
" + Thread.currentThread().getName());
System.out.println("
Default thread priority of Main Thread: " + Thread.currentThread().getPriority());
Thread.currentThread().setPriority(10);
System.out.println("Changed thread priority of Main Thread: " + Thread.currentThread().getPriority());
}
}输出
Default thread priority of Thread 1: 5 Default thread priority of Thread 2: 5 Default thread priority of Thread 3: 5 Default thread priority of Thread 4: 5 Default thread priority of Thread 5: 5 Changing the default thread priority using the setPriority() method Changed thread priority of Thread 1: 7 Changed thread priority of Thread 2: 3 Changed thread priority of Thread 3: 9 Changed thread priority of Thread 4: 2 Changed thread priority of Thread 5: 8 main Default thread priority of Main Thread: 5 Changed thread priority of Main Thread: 10
更新日期：2019 年 7 月 30 日
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