2019.6.5

1111

public class num1 {
    public static void main(String[]args){
    	Boolean numbool = new Boolean(false);
    	Character numchar = new Character('Z');
        Integer numint = new Integer(251);
        Long numlong = new Long(4757);
        Double numdou = new Double(3.1415926);
        
        System.out.println(numbool);
        System.out.println(numint);
        System.out.println(numdou);
        System.out.println(numlong);
        System.out.println(numchar);

    }
}

2222

import java.text.SimpleDateFormat;
import java.util.*;
public class num2 {	
	public static void main(String[] args) {
		Date date = new Date();
		System.out.println("时间:"+date);
		String strDate = date.toString();
	    String year = strDate.substring(24,28);
	    String month = strDate.substring(4,7);
	    String day = strDate.substring(9,10);
	    String hour = strDate.substring(11,13);
	    String min = strDate.substring(14,16);
	    String sec = strDate.substring(17,19);
	    
	    System.out.print(year+"年");
	    System.out.print(month+"月");
	    System.out.print(day+"日   ");
	    System.out.print(hour+"时");
	    System.out.print(min+"分");
	    System.out.println(sec+"秒");
	    
	    SimpleDateFormat dateformat1=new SimpleDateFormat("yyyy年MM月dd日HH时mm分ss秒 E");
	    String a1 = dateformat1.format(new Date());
	    System.out.println("时间："+a1);
	}
}