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Distinguish between method over ridding and method overloading as used in objectedoriented programming languages such as java. Give an example java code implementingfor each case

Question

Distinguish between method over ridding and method overloading as used in objectedoriented programming languages such as java. Give an example java code implementingfor each case

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Solution

In object-oriented programming languages like Java, method overriding and method overloading are two different concepts.

Method Overriding:

  • Method overriding occurs when a subclass provides its own implementation of a method that is already defined in its superclass.
  • The method in the subclass must have the same name, return type, and parameters as the method in the superclass.
  • The purpose of method overriding is to provide a specific implementation of a method in the subclass, which may differ from the implementation in the superclass.
  • Method overriding is used to achieve runtime polymorphism.

Example Java code for method overriding:

class Animal {
    public void makeSound() {
        System.out.println("Animal is making a sound");
    }
}

class Cat extends Animal {
    @Override
    public void makeSound() {
        System.out.println("Cat is meowing");
    }
}

public class Main {
    public static void main(String[] args) {
        Animal animal = new Animal();
        animal.makeSound();  // Output: Animal is making a sound
        
        Cat cat = new Cat();
        cat.makeSound();  // Output: Cat is meowing
    }
}

Method Overloading:

  • Method overloading occurs when multiple methods in the same class have the same name but different parameters.
  • The methods must have different parameter types, different number of parameters, or both.
  • The purpose of method overloading is to provide multiple ways to invoke a method with different arguments.
  • Method overloading is determined at compile-time based on the arguments passed to the method.

Example Java code for method overloading:

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

public class Main {
    public static void main(String[] args) {
        Calculator calculator = new Calculator();
        
        int sum1 = calculator.add(5, 10);
        System.out.println("Sum1: " + sum1);  // Output: Sum1: 15
        
        double sum2 = calculator.add(2.5, 3.7);
        System.out.println("Sum2: " + sum2);  // Output: Sum2: 6.2
    }
}

In the above example, the add method is overloaded with different parameter types (integers and doubles), allowing us to perform addition with different types of arguments.

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Similar Questions

a) Explain the following terms related to Java methods with the aid of suitable examples.i) Method Signature (2 Marks)ii) Method Overloading (4 Marks)iii) Call by value and Call by reference

In Java, method overloading allows developers to:Question 1Answera.Override a method inherited from a superclass.b.Define multiple methods with the same name but different return types.c.Define multiple methods with the same name but different access modifiers.d.Define multiple methods with the same name but different parameters.

What is the purpose of method overloading in Java?Question 5Answera.To override superclass methods with more specific implementations.b.To create multiple methods with the same name but different parameters.c.To limit the number of methods in a class.d.To restrict method access to subclasses only.

lect the correct answerWhich of these is supported by method overriding in Java?

Q1 [50 points] – Basic Java Programming & Arrays (both Single & Multi-dimensional)(a) Explain the following terms related to Java methods with the aid of suitable examples.i) Method Signature (2 Marks)ii) Method Overloading (4 Marks)iii) Call by value and Call by reference (4 Marks)

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