riqi.java

java例子

import java.io.*;
import java.text.*;
import java.util.*;

public   class   Riqi   
{   
    public   static   void   main(String[]   args) throws Exception

    {
    	System.out.println("请您输入要计算的日期：");
    	SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd"); 
    	Date Former=s.parse(args[0]);
		Date Now=new Date();
		long betweenDays = (long)(Now.getTime()-Former.getTime())/(3600000*24);
		System.out.println("您所输入的日期距今一共相差"+betweenDays+"天");
    }   
}