java - Java中将输入作为字符串并限制用户不能输入整数

Question

我想将输入作为Java中的字符串并使用try catch限制用户不输入整数。

import java.util.*;

public class trycatch { 

    public static void main(String args[]) { 

        Scanner sc=new Scanner(System.in);
        String a; 

        System.out.println("\n\nEnter the name"); 

        try { 
            a=sc.nextLine(); 

            System.out.println("You name is "+a); 
        } 

        catch(InputMismatchException b) { 
            System.out.println("There is problem with your input"); 
        } 
    } 
}

Answer 1

测试是否为int，如果不是则抛出异常

a=sc.nextLine(); 
Integer.valueOf(a); // throws NumberFormatException

// this is number so go to top of loop
continue;
} catch(NumberFormatException b) { 
        System.out.println("There is NO problem with your input");
        // we can use `a` out side the loop 
}