Q:

Java program to validate input as integer value only

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mahmoud2506
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2022-05-06
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Java program to validate input as integer value only

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mahmoud2506
2022-05-06
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Program

import java.util.Scanner;
import java.util.InputMismatchException;
public class Scan
{   
	// create function readint for reading input value.
	public static int readInt(String msg)
	{ 
		boolean error=false;
		int x=0;
		do
		{
			try
			{
				// create object of scanner class.
				Scanner KB=new Scanner(System.in);

				// enter here.
				System.out.print("Enter integer : ");
				x=KB.nextInt();
				error=false;
			}
			catch(InputMismatchException e)
			{
				// accept integer only.
				System.out.println("Invalid Input..Pls Input Integer Only..");
				error=true;
			}
		}
		while(error);
		return(x);
	}
}

Output

Enter integer : Good
Invalid Input..Pls Input Integer Only..
Enter integer : 10
Enter integer : 10

 

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