Question

How to fix this debugging in java

Problem Debugging

This problem is to assign a value to num2 based on the input value of num1. It should then print both numbers.

int num1 = 0;

int num2 = 0;

System.out.print("Enter a number - 1, 2, or 3: ");

num1 = keyboard.nextInt();

if (num1 == 1);

num2 = 2;

else if (num1 == 2);

num2 = 3;

else if (num1 == 3);

num2 = 4;

System.out.println("num1 = " + num1 // + " and num2 = " + num2);

System.out.println("\n");

Answer 1

Light yellow marks indicate the errors and fixed places.

• Removed ; after the if conditions
• Defined keyboard parameter
• Removed \\ in while printing the output

import java.util.Scanner;
public class MyClass {
public static void main(String args[]) {
Scanner keyboard = new Scanner(System.in);
  
int num1 = 0;
  
int num2 = 0;
  
System.out.print("Enter a number - 1, 2, or 3: ");
  
num1 = keyboard.nextInt();
  
if (num1 == 1)
  
num2 = 2;
  
else if (num1 == 2)
  
num2 = 3;
  
else if (num1 == 3)
  
num2 = 4;
  
System.out.println("num1 = " + num1 + " and num2 = " + num2);
  
System.out.println("\n");
}
}