Polymorphism means multiple forms that mean the same object can be used to different tasks.
Operator overloading is a type of polymorphism, using the same operator for different functions
Example: In Java, + operator can be used to concatenate two string and also can be used to add two numbers.
int x = 2;
int y = 3;
int sum = x + y; // output = 5
String fName = "ABC";
String lName = "DEF
name = fName + lName; // output = ABC DEF
Method Overloading is another type of polymorphism in which the method name will be the same in different classes. That particular method will be called based on the object name.
Example: In this example sound() method is used in different classes. If c1.Sound() is executed sound() method of the class cow will be called. If l1.sound() is executed sound() method of class Lion will be called.
abstract class Animal{
public abstract void sound();
}
class Lion extends Animal {
public void sound() {
System.out.println("roar roar..");
}
}
class Cow extends Animal {
public void sound() {
System.out.println("Moo moo..");
}
}
class Main {
public static void main(String[] args) {
Lion l1 = new Lion();
l1.sound();
Cow c1 = new Cow();
c1.sound();
}
}
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You can watch this video on Java for a better explanation:
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