java中测试程序运行时间

SFY1205

于 2019-05-08 18:17:52 发布

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import java.util.*;

public class DiffDemo {
 
   public static void main(String args[]) {
      try {
         long start = System.currentTimeMillis( );//进程开始时间
         System.out.println(new Date( ) + "\n");
         Thread.sleep(5*60*10);//休眠3秒
         System.out.println(new Date( ) + "\n");
         long end = System.currentTimeMillis( );//进程结束时间
         long diff = end - start;
         System.out.println("Difference is : " + diff);
      } catch (Exception e) {
         System.out.println("Got an exception!");
      }
   }
}

编译并运行，结果如下

Wed May 08 18:17:24 CST 2019

Wed May 08 18:17:27 CST 2019

Difference is : 3032