Method Overloading in Java | Example

→ In method overloading, Same method, different Parameters is known as Method Overloading.

Syntax :-

 public class AddEx {
    public void add(int a, int b)  {
        ....
    }
    public void add(int a,int b, int c) {
        ....
    }
}

Example :-

 class AddEx {
    void add(int a, int b) {
        System.out.println("Sum of two=" + (a + b));
    }
    void add(int a, int b, int c) {
        System.out.println("Sum of three=" + (a + b+c));
    } 
 public static void main(String args[]) {
        AddEx a = new AddEx();
        a.add(5, 5);
        a.add(5, 5, 5);
  }}

Output

Advantage of method overloading

We don't have to create and remember different names for functions doing the same thing
It increases the readability of the program.

Different ways to overload the method

There are two ways to overload the method in java

By changing of Parameter or Argument
By changing the Data Type

1) By changing of Parameter or Argument

Example :-

 class AddEx {
    void add(int a, int b) {
        System.out.println("Sum of two=" + (a + b));
    }
    void add(int a, int b, int c) {
        System.out.println("Sum of three=" + (a + b+c));
    } 
 public static void main(String args[]) {
        AddEx a = new AddEx();
        a.add(5, 5);
        a.add(5, 5, 5);
  }}

Output

2) By changing the Data Type

Example1 :-

 
class AddEx {
   static void add(int a, int b) {
        System.out.println((a +b));
    }
 void add(float a, float b, float c) {
        System.out.println((a + b+c));
    }
  public static void main(String args[]) {
        AddEx a = new AddEx();
        a.add(5, 5);
        a.add(5, 5, 5);
  }  }

Output

Example2 :-

 
 class AddExample{  
static int add(int a, int b){return a+b;}  
static double add(double a, double b){return a+b;}  
}  
class Overloading{  
public static void main(String[] args){  
System.out.println(AddExample.add(10,10));  
System.out.println(AddExample.add(12.3,12.6));  
}}

Output

Example3 :-

   public class Addition {
  static int sum(int x, int y) {
      return x + y;
  }
  static double sum(double x, double y) {
    return x + y;
  }
  public static void main(String[] args) {
    int num1 = sum(10, 5);
    double num2 = sum(2.2, 6.6);
    System.out.println("int: " + num1);
    System.out.println("double: " + num2);
  }
}
 

Output

Next TopicMethod Overriding in Java

← prev next →

OOPs Concepts

Method Overloading in Java | Example

Advantage of method overloading

Different ways to overload the method

1) By changing of Parameter or Argument

2) By changing the Data Type