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Hello friends Welcome to Anonymous School. In this blog we see about "Creating A Basic Calculator Program In Java.".

Creating a Basic Calculator Program in Java

Creating a basic calculator program in Java is easy enough; all you need is some basic knowledge of the language and an understanding of how to use variables, operators and loops. In this blog post, we’ll walk through a simple calculator program so you can get an idea of what’s involved.

Step One: Set Up Your Variables

Before you can write your Java program, you need to decide what variables you’ll be using. You’ll need at least two variables for the numbers being calculated and another one for the result. Here’s an example of setting up the variables:

  double num1;
  double num2;
  double result;

Step Two: Ask the User for Input

Now that you have your variables set up, you need to ask the user for input. This can be done using the Scanner class. The following code sets up the scanner and asks the user for two numbers:

  Scanner sc = new Scanner(System.in);
  System.out.println("Enter two numbers:");
  num1 = sc.nextDouble();
  num2 = sc.nextDouble();

Step Three: Implement the Calculator Functionality

Now that you have the user’s input, you can start implementing the calculator functionality. We’ll use a switch statement to handle the different operations that the calculator can perform. The following code implements addition, subtraction, multiplication and division:

  switch (operation) {
    case "+":
      result = num1 + num2;
      break;
    case "-":
      result = num1 - num2;
      break;
    case "*":
      result = num1 * num2;
      break;
    case "/":
      result = num1 / num2;
      break;
  }

Step Four: Output the Result

Finally, you need to output the result. This can be done using the println() method. The following code prints out the result to the console:

  System.out.println("The result is: " + result);

Conclusion

And that’s it! As you can see, creating a basic calculator program in Java is relatively straightforward. With just a few lines of code, you can create a functional calculator application.

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