Java格式化日期

package com.leo.demo;

import java.text.SimpleDateFormat;
import java.util.Date;


public class MainClass {

    public static void main(String[] args) {
       Date d = new Date();
       SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd hh:mm:ss");
       System.out.println(sdf.format(d));
    }
}