Question

Create a DataEntryException class whose getMessage() method returns information about invalid integer data. Write a program named GetIDAndAge that continually prompts the user for an ID number and an age until a terminal 0 is entered for both. If the ID and age are both valid, display the message ID and Age OK.

Throw a DataEntryException if the ID is not in the range of valid ID numbers (0 through 999), or if the age is not in the range of valid ages (0 through 119). Catch any DataEntryException or InputMismatchException that is thrown, and display the message Invalid age or ID - DataEntryException - \, where \ is the value of the invalid input. For example:

Enter ID 1000
Enter age 40
Invalid age or ID - DataEntryEx

CODE:

public class DataEntryException extends Exception {
public DataEntryException(int num) {
}
}

---------------------

import java.util.*;
public class GetIDAndAge {
public static void main(String[] args) {
int id;
int age;
final int QUIT = 0;
int returnVal = QUIT + 1;
Scanner keyboard = new Scanner(System.in);
while (returnVal != QUIT) {
// Write your code here
}
}
public static int check(int idNum, int ageNum) throws DataEntryException {
// Write your code here
}
public static void showStatus(String msg) {
// Write your code here
}
}

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
_________________

// DataEntryException.java

public class DataEntryException extends Exception {
   public DataEntryException(int num) {
       System.out.println("Invalid age or ID - DataEntryEx");
   }
}

_________________________

// GetIDAndAge.java

import java.util.*;

public class GetIDAndAge {
   public static void main(String[] args) {
       int id;
       int age;
       final int QUIT = 0;
       int returnVal = QUIT + 1;
       Scanner keyboard = new Scanner(System.in);
      
       while (returnVal != QUIT) {
           try {
           System.out.print("Enter ID :");
           id=keyboard.nextInt();
           System.out.print("Enter age :");
           age=keyboard.nextInt();
          
               returnVal=check(id,age);
           }
       catch (DataEntryException e) {
              
           }
       }
          
       }

   public static int check(int idNum, int ageNum) throws DataEntryException {
       int status=1;
       if(idNum>0 && ageNum>0)
       {
           showStatus("ID and Age OK");
           status=0;
       }
       else if(idNum<0)
       {
           throw new DataEntryException(idNum);  
       }
       else if(ageNum<0)
       {
           throw new DataEntryException(ageNum);
       }
       else
       {
           status=0;
       }
       return status;
   }

   public static void showStatus(String msg) {
       System.out.println(msg);
   }
}
___________________________

Output:

Enter ID :-56677
Enter age :45
Invalid age or ID - DataEntryEx
Enter ID :2455
Enter age :-45
Invalid age or ID - DataEntryEx
Enter ID :1000
Enter age :40
ID and Age OK

______________.Thank You