Java Method Overloading Guide

In Java, method overloading refers to the ability to define multiple methods in the same class with the same name but different parameter lists. To properly implement method overloading, several points need to be taken into consideration.

The method name must be the same, but the parameter list must be different. This can include the type, order, and number of parameters.

2. The return types can be the same or different, but method overloading cannot be distinguished solely based on return type.

The access modifiers of methods can vary, but method overloading cannot solely rely on access modifiers for differentiation.

Here is an example code:

public class MethodOverloadingExample {

    public int add(int a, int b) {
        return a + b;
    }

    public double add(double a, double b) {
        return a + b;
    }

    public String add(String a, String b) {
        return a + b;
    }

    public static void main(String[] args) {
        MethodOverloadingExample example = new MethodOverloadingExample();
        
        System.out.println(example.add(1, 2));
        System.out.println(example.add(1.5, 2.5));
        System.out.println(example.add("Hello", "World"));
    }
}

In the example above, we have defined three methods named “add” that accept different types of parameters. This achieves method overloading, where the compiler selects the appropriate method to call based on the parameter type passed when calling the add method.