String和date的互转

日期时间的表达转换

1. String和date的转换parse

2. date和String的转换format

           package com.catches;
           import java.text.DateFormat;
           import java.text.ParseException;
           import java.text.SimpleDateFormat;
           import java.util.Date;
           public class Demo09 {
               public static void main(String[] args) {
                   //String --date
                   Date date = new Date();
                   DateFormat dateForma =new SimpleDateFormat("yyyy-MM-DD HH:mm:ss");
                   try {
                       Date date1 =  dateForma.parse("2022-04-15 08:23:33");
                       System.out.println(date1);
                   } catch (ParseException e) {
                       e.printStackTrace();
                   }
                   //data --String
                   String fromer = dateForma.format(new Date());
                   System.out.println(fromer);
   
               }
   
   
           }