Module 21: Method Overloading

🔄 What is Method Overloading?

Method Overloading in Java allows a class to have more than one method with the same name, but different parameter lists. It helps increase the readability of the program.

🧱 Rules of Method Overloading

• Methods must have the same name.
• Methods must differ in the type or number of parameters.
• Return type can be different but it’s not enough alone to overload a method.

💡 Example: Overloaded Methods

                    class Calculator {
                      int add(int a, int b) {
                        return a + b;
                      }
                    
                      double add(double a, double b) {
                        return a + b;
                      }
                    
                      int add(int a, int b, int c) {
                        return a + b + c;
                      }
                    }
                    
                    public class Main {
                      public static void main(String[] args) {
                        Calculator calc = new Calculator();
                        System.out.println(calc.add(2, 3));       // 5
                        System.out.println(calc.add(2.5, 3.5));   // 6.0
                        System.out.println(calc.add(1, 2, 3));    // 6
                      }
                    }