在Java編程中，如何查看線程的優先級？

以下示例演示如何使用Thread類的getPriority()方法檢查線程的優先級。

package com.yiibai;

public class ThreadPriorityLevel extends Object {

private static Runnable makeRunnable() {

Runnable r = new Runnable() {

public void run() {

for (int i = 0; i < 5; i++) {

Thread t = Thread.currentThread();

System.out.println("in run() - priority = " + t.getPriority() + ", name = " + t.getName());

try {

Thread.sleep(2000);

} catch (InterruptedException x) {

}

}

}

};

return r;

}

public static void main(String[] args) {

System.out.println("in main() - Thread.currentThread(). getPriority()=" + Thread.currentThread().getPriority());

System.out.println("in main() - Thread.currentThread().getName()=" + Thread.currentThread().getName());

Thread threadA = new Thread(makeRunnable(), "threadA");

threadA.start();

try {

Thread.sleep(3000);

} catch (InterruptedException x) {

}

System.out.println("in main() - threadA.getPriority() = " + threadA.getPriority());

}

}

上述代碼示例將產生以下結果 -

in main() - Thread.currentThread(). getPriority()=5

in main() - Thread.currentThread().getName()=main

in run() - priority = 5, name = threadA

in run() - priority = 5, name = threadA

in main() - threadA.getPriority() = 5

in run() - priority = 5, name = threadA

in run() - priority = 5, name = threadA

in run() - priority = 5, name = threadA

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