Question

java中的while（true）语句的用法是什么

具体是用来做什么的，有什么意义

Answer 1

import java.text.SimpleDateFormat;

public class TestTime {

static int x = 0;

public static String time(){

SimpleDateFormat Df = new SimpleDateFormat("ss");

String df = Df.format(new java.util.Date());

x = 2 ;

System.out.println(df);

return df;

}

public static void main(String[] args) {

String df = time();

int t = Integer.parseInt(df);

System.out.println(t);

while(true){

SimpleDateFormat Df = new SimpleDateFormat("ss");

df = Df.format(new java.util.Date());

int t2 = Integer.parseInt(df);

System.out.println("t:"+t);

System.out.println("t2:"+t2);

if(t2-t >= 1){

if(x == 1){

x = 2;

}

break;

}

}

System.out.println("X："+x);

}

}