我將如何循環掃描儀在Java？

Question

package javaapplication97; 

import java.util.Scanner;  

public class JavaApplication97 {  

    public static void main(String[] args) { 

     System.out.println("Enter a number: "); 
     Scanner s1 = new Scanner(System.in);  

     if (s1.hasNextInt()) 
      System.out.println("This is an int");  

    } 
} 

Answer 1

我想你的意思是這

import java.util.*; 

public class test{ 

    public static void main(String[] args) { 

     while(true){ 
      System.out.println("Enter a number: "); 
      Scanner s1 = new Scanner(System.in);  

      if (s1.hasNextInt()){ 
       System.out.println("This is an int"); 
      } 
      else if(s1.nextLine().compareTo("stop")==0){ 
       break; 
      } 
      else{ 
       System.err.println("this is not an int"); 
      } 
      System.out.println("---------"); 
    } 
}