hasNex循环输入的简单用法
import java.util.Random; import java.util.Scanner;
public class Aaa {
public static void main(String[] args){
Scanner scan = new Scanner(System.in);
int a=0,b=0;
while(scan.hasNext())
{
a=scan.nextInt();
b=scan.nextInt();
System.out.println(a);
System.out.println(b);
}
}
}
