public int add(int x, int y) { 
    return x + y; 
}

1. What is This Java Calculator?

This calculator demonstrates a simple Java method that adds two integers together. It's a fundamental example of basic arithmetic operations in programming.

2. How Does the Calculator Work?

The calculator uses the following Java method:

public int add(int x, int y) {
    return x + y;
}

Where:

• x — First integer input
• y — Second integer input
• return x + y — Returns the sum of x and y

Explanation: The method takes two integer parameters and returns their sum. This is a basic example of method implementation in Java.

3. Importance of Integer Addition

Details: Integer addition is one of the most fundamental operations in programming. Understanding how to perform and return basic calculations is essential for all programmers.

4. Using the Calculator

Tips: Enter two integer values in the input fields and click "Calculate" to see their sum. The calculator will display the result of adding the two numbers together.

5. Frequently Asked Questions (FAQ)

Q1: What happens if I enter non-integer values?
A: The calculator will convert decimal numbers to integers by truncating the decimal portion.

Q2: What is the range of numbers I can add?
A: The range is limited by PHP's integer size, typically between -2,147,483,648 and 2,147,483,647 on 32-bit systems.

Q3: What about overflow?
A: This calculator doesn't handle integer overflow cases specially. In Java, integer overflow would wrap around.

Q4: Can I see the actual Java code running?
A: No, this is a PHP simulation of the Java method's behavior for demonstration purposes.

Q5: Why is this method useful?
A: While simple, it demonstrates method structure, parameter passing, and return values in Java.