Method Overloading with Changing Numbers of Parameters and Data Types in Java

Write a Java program to demonstrate method overloading with changing the number of parameters and data types

This Java program defines a class named StringOperations with several overloaded concat methods. Overloading means having multiple methods with the same name but different parameter lists.

The main method creates an instance of the StringOperations class.
It then calls the concat methods with different arguments.
The Java compiler determines which method to call based on the number and type of arguments passed.
For each call to concat, the appropriate version of the method is invoked and the concatenated string is returned.
The concatenated strings are then printed to the console.

Source Code

class StringOperations
{
	String concat(String str1, String str2)
	{
		return str1 + str2;
	}
 
	String concat(String str1, String str2, String str3)
	{
		return str1 + str2 + str3;
	}
 
	String concat(int num, String str)
	{
		return num + str;
	}
 
	public static void main(String[] args)
	{
		StringOperations strOps = new StringOperations();
		System.out.println("Concatenation 1 : " + strOps.concat("Hello ", "World"));
		System.out.println("Concatenation 2 : " + strOps.concat("Java", " is", " fun"));
		System.out.println("Concatenation 3 : " + strOps.concat(47, " is the answer"));
	}
}

Output

Concatenation 1 : Hello World
Concatenation 2 : Java is fun
Concatenation 3 : 47 is the answer

Method Overloading with Changing Numbers of Parameters and Data Types in Java

Source Code

Output

Example Programs

Method Overloading Programs in Java