Calculator coding by Devansh Mishra

In java  - I'm trying to create a basic calculator in Java. I'm quite new to programming so I'm trying to get used to it. import java.util.Scanner; import javax.swing.JOptionPane; public class javaCalculator  {     public static void main(String[] args)      {         int num1;         int num2;         String operation;         Scanner input = new Scanner(System.in);         System.out.println("please enter the first number");         num1 = input.nextInt();         System.out.println("please enter the second number");         num2 = input.nextInt();         Scanner op = new Scanner(System.in);         System.out.println("Please enter operation");         operation = op.next();         if (operation == "+");   ...