19 Date

Date类

方法

• toString()
• toLocaleString()已弃用但任然可以用
• date.before(date1) date.after(date1) 返回值时布尔类型
• 比较 compareTo();返回值是int 正负一
• ate.equals(date1); 返回值也是布尔类型

package date;

import java.util.Date;

public class demo01 {
    public static void main(String[] args) {
        //今天
        Date date=new Date();
        System.out.println(date.toString());
        System.out.println(date.toLocaleString());
        System.out.println("=================");
        //昨天
       Date date1=new Date(date.getTime()-(60*60*24*1000));
        System.out.println(date1.toLocaleString());
        System.out.println("=================");
        //after before
        boolean b1=date.before(date1);
        boolean b2=date.after(date1);
        System.out.println(b1);
        System.out.println(b2);
        System.out.println("=================");
       //比较 compareTo();返回值是int
        int i=date.compareTo(date1);
        System.out.println(i);
        //equals();返回值是布尔类型
        Boolean b=date.equals(date1);
        System.out.println(b);

    }
}


2021-8-9 13:34:21
=================
2021-8-8 13:34:21
=================
false
true
=================
1
false

Process finished with exit code 0