Difference between method overloading and method overriding in Java

Method: It is a set of statements that collectively perform a specific task and can be invoked any number of times by using its name. In other words, these lines of code are grouped together to form a method and this defined method can be used any number of time. It reduces the length of the code and improves readability.

Polymorphism: It refers to ability to take multiple forms. In Java, method overloading and overriding are the ways to implement polymorphism.

Method Overloading

Overloading is a feature that allows a class to have multiple methods having same name. In order to achieve this, one can change number of method arguments or argument datatypes.

Syntax:

class A {
void show () {
// body
}

// overloading 

void show (int x) {

// body
}
...

}

Method Overriding

Overriding is a feature that allows a subclass to have a method that is already defined in parent class, with same name and signature, but different implementation.

Syntax:

class A {
void show () {
// body
}
}

class B extends A {

// overriding

@override
void show () {

// body
}
...

}

Difference between method overloading and overriding in Java in tabular form

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Java Overriding Example:

public class PUBG {

    void demageAWM (){

        System.out.println("1 shot damage 100 % ");
    }

}

class PUBGUpdatedVersion extends PUBG {
// overriding demageAWM()
    @Override
    void demageAWM() {
        System.out.println("1 shot damage 95%");
    }
}

class test {

    public static void main(String[] args) {
        PUBGUpdatedVersion gun = new PUBGUpdatedVersion();
        gun.demageAWM();
    }
}

Output:

1 shot damage 95%

Java Overloading Example

public class PUBG {
// overloading attachments()
    void attachments (String scope){

        System.out.println("This is pistal with "+scope);
    }

    void attachments (String scope, String mag,String extender){

        System.out.println("This is Auto Gun with "+scope+","+mag+", "+extender);
    }

}


class test {

    public static void main(String[] args) {
        PUBG gun = new PUBG();
        gun.attachments("Red dot");
        gun.attachments("6x","AWM mag","AWM extender");
    }
}