AgeInputVer3.java

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package exceptionhandling;

import java.util.InputMismatchException;
import java.util.Scanner;

/**
 *
 * @author admin
 */
public class AgeInputVer3 
{
    private static final String DEFAULT_MESSAGE = "Your age: ";
    private Scanner scanner;
    
    public AgeInputVer3()
    {
        scanner = new Scanner(System.in);
    }
    public int getAge() 
    {
        return getAge(DEFAULT_MESSAGE);
    }
  
    public int getAge(String prompt) 
    {
        int age=0;
        
        while (true) 
        {
            System.out.print(prompt);
            try 
            {
                age = scanner.nextInt();
                if (age < 0) 
                {
                    throw new Exception("Negative age is invalid");
                }

                return age; //input okay so return the value & exit
            } 
            catch (InputMismatchException e) 
            {
                scanner.next();
                System.out.println("Input is invalid.\n"+"Please enter digits only");
            } 
            catch (Exception e) 
            {
                System.out.println("Error: " + e.getMessage()); 
            }
        }
    
    }
}