Write a program that reads two integer numbers for the variables a and b. If any other character except number (0-9) is entered then the error is caught by NumberFormatException object. After that ex.getMessage() prints the information about the error occurring causes.
Code Insights
Created java_5.java, a new java class file and imported java.util.Scanner package to take user input and try to cast the input to Integer by in-built method Integer.parseInt() and if it fails to do (String input case) it throws the NumberFormatException.
Code
/**
*Solution for Ans. 10
* @author Jatin Kamboj 8647
*/
import java.util.Scanner;
public class java_5 {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
System.out.println("\nThis program tells" +
" if the given INPUT is a number" +
" or not");
checkInput(sc, "\nEnter First Number: ");
checkInput(sc, "\nEnter Second Number: ");
}
private static void checkInput(Scanner sc, String s) {
try {
System.out.print(s);
String a = sc.nextLine();
int parsedValue1 = Integer.parseInt(a);
System.out.println("\nThe INPUT => " +
parsedValue1 +
" you gave is a Number");
} catch (NumberFormatException ex) {
System.out.println("Your INPUT => " +
ex.getMessage() +
" is not a Number");
}
}
}
Output
Try or Test The Corresponding Code Here
The above notebook runs on cloud, make sure to run the first cell of the notebook to set-up JDK and JRE on the cloud machine.
