Question

import java.util.Scanner;
    class Tugas3 {
        public static void main (String[] args) {
        Scanner input = new Scanner(System.in);
        String nama;
        int umur,nomor;

        System.out.println("Enter Your Full Name : ");
        nama = input.nextLine();

        System.out.println("Enter Your Age : ");
        umur = input.nextInt();
        input.nextLine();

        System.out.println("Input Your Phone Number : ");
        nomor = input.nextInt();
        System.out.printf("Contact : "+nama+" "+umur+""+(char)48+""+nomor);
    }
}

所以我只想输入0号，但我一直收到错误信息..任何解决方案？

Answer 1

这将允许任何输入并避开InputMismatchException，但原始代码没有任何问题。问题是您尝试使用不正确的输入来测试扫描仪。

package test;
import java.util.Scanner;
public class Tugas3 {
    public static void main (String[] args) {
    Scanner input = new Scanner(System.in);
    String nama;
    String line;
    int umur = 0,nomor = 0;

    System.out.println("Enter Your Full Name : ");
    nama = input.nextLine();

    System.out.println("Enter Your Age : ");
    line = input.nextLine();
    try{
        umur = Integer.parseInt(line.trim());
    }catch(NumberFormatException e){
              System.out.println("Invalid number. Set to 0.");
    }

    System.out.println("Input Your Phone Number : ");
    line = input.nextLine();
    try{
        nomor = Integer.parseInt(line.trim());
    }catch(NumberFormatException e){
              System.out.println("Invalid number. Set to 0.");
    }
    System.out.printf("Contact : "+nama+" "+umur+""+(char)48+""+nomor);
    }
}

继续得到“线程中的异常”主“java.util.InputMismatchException：输入字符串”

1 个答案: