groovy 时间Date

Date是一个时间类，可以用它实例化出对象。

class Yong {
	static void main(String [] args){
		Date date =  new Date("05/11/2021");
		Date date1 =  new Date("06/10/2021");
		println(date.after(date1))
		println(date.toString());
	}
}

false
Tue May 11 00:00:00 CST 2021
after()测试时间是否在指定的范围内
before()是否在該時間之前
compareTo

class Example { 
   static void main(String[] args) { 
      Date olddate = new Date("05/11/2015"); 
      Date newdate = new Date("05/11/2015"); 
      Date latestdate = new Date(); 
		
      System.out.println(olddate.before(newdate)); 
      System.out.println(latestdate.compareTo(newdate)); 
   } 
}

0
1
getTime()获取19701月1日到现在的毫秒数

class Test{
	   static void main(String[] args) { 
      Date olddate = new Date("05/11/2015");
      Date newdate = new Date("05/11/2015"); 
      Date latestdate = new Date(); 
		
      System.out.println(olddate.getTime()); 
      System.out.println(newdate.getTime()); 
      System.out.println(latestdate.getTime()); 
   } 
}

setTime();设置从19700101之后的毫秒数的日期

class Test{
	   static void main(String[] args) { 
      Date olddate = new Date();
      olddate.setTime(1631273600000);
      System.out.println(olddate.toString()); 
   } 
}