Java 如何测量时间间隔

import java.util.*;

public class DiffDemo {

​

   public static void main(String args[]) {

      try {

         long start = System.currentTimeMillis( );

         System.out.println(new Date( ) + "\n");

         Thread.sleep(5*60*10);

         System.out.println(new Date( ) + "\n");

         long end = System.currentTimeMillis( );

         long diff = end - start;

         System.out.println("Difference is : " + diff);

/**代码未完, 请加载全部代码(NowJava.com).**/