java void方法

對象類最終無效等待(長毫秒) (Object Class final void wait(long ms))

• This method is available in java.lang.Object.wait(long ms).

  此方法在java.lang.Object.wait(long ms)中可用。

• This method causes the current thread to wait for a specified amount of time until another thread notification by calling notify() or notifyAll() method of the object.

  此方法使當前線程等待指定的時間，直到通過調用對象的notify()或notifyAll()方法發出另一個線程通知為止。

• This method throws an InterruptedException when other thread interrupted current thread.

  當其他線程中斷當前線程時，此方法將引發InterruptedException 。

• This method can't override because it is final.

  此方法是最終方法，因此無法覆蓋。

• The time will be given in the method is of milliseconds.

  該方法將給出的時間以毫秒為單位。

Syntax:

句法：

final void wait(long ms){}

Parameter(s):

參數：

We can pass an object(How long a thread has to wait i.e. we have to mention time in milliseconds) as a parameter in the method of the Object class.

我們可以在Object類的方法中將一個對象(線程必須等待多長時間，即必須提到毫秒)作為參數傳遞。

Return value:

返回值：

The return type of this method is void that means this method returns nothing after execution.

該方法的返回類型為void ，這意味著該方法在執行后不返回任何內容。

Java程序演示對象類等待(長毫秒)方法的示例 (Java program to demonstrate example of Object Class wait(long ms) method)

import java.lang.Object;public class Thread1 {public static void main(String[] args) throws InterruptedException {// Create an object of Thread2Thread2 t2 = new Thread2();// By calling start() so Thread start() will exceutet2.start();Thread.sleep(1000);synchronized(t2) {System.out.println("Main thread trying to call wait()");// By calling wait() causes the current thread to wait // for 1000 milliseconds until another thread notificationt2.wait(1000);System.out.println("Main Thread get notification here");System.out.println(t2.total);}} }class Thread2 extends Thread {int total = 0;public void run() {synchronized(this) {System.out.println("Thread t2 starts notification");for (int i = 0; i < 50; ++i) {total = total + i;}System.out.println("Thread t2 trying to given notification");this.notify();}} }

Output

輸出量

D:\Programs>javac Thread1.javaD:\Programs>java Thread1 Thread t2 starts notification Thread t2 trying to given notification Main thread trying to call wait() Main Thread get notification here 1225

翻譯自: https://www.includehelp.com/java/object-class-final-void-wait-long-ms-method-with-example.aspx

java void方法

總結

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