Solving the ‘Return the Next Number’ Java Programming Problem

A Beginner’s Guide to Writing a Function That Increments an Integer by 1

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Introduction

In this article, we’ll walk through a step-by-step guide on how to write a function that takes a number as an argument, increments the number by 1, and returns the result.

Step 1: Define the Function

To start, we need to define the function. In Java, a function is a block of code that performs a specific task. We’ll name our function addition and specify that it takes one integer argument:

public static int addition(int num) {
  // code goes here
}

Step 2: Increment the Integer

Next, we need to increment the integer by 1. We can do this using the ++ operator:

public static int addition(int num) {
  num++;
  return num;
}

Step 3: Return Result

Finally, we need to return the result. In Java, we use the return keyword to return a value from a function:

public static int addition(int num) {
  num++;
  return num;
}

Step 4: Test the Function