The differences between Method Overloading and Method Overriding in Java are as follows:
| Method Overloading | Method Overriding |
|---|---|
| Method overloading is a collect- time polymorphism. | Method overriding is a run- time polymorphism. |
| It helps to increase the readability of the program. | It’s used to grant the specific perpetration of the method which is formerly handed by its parent class or superclass. |
| It occurs within the class. | It’s performed in two classes with heritage connections. |
| Method overloading may or may not bear heritage. | Method overriding always needs heritage. |
| In method overloading, styles must have the same name and different autographs. | In method overriding, styles must have the same name and same hand. |
| In method overloading, the return type can or can’t be the same, but we just have to change the parameter. | In method overriding, the return type must be the same orco-variant. |
| Static list is being used for overloaded styles. | Dynamic list is being used for overriding styles. |
| Poor Performance due to collect time polymorphism. | It gives better performance. The reason behind this is that the list of overridden styles is being done at runtime. |
| Private and final styles can be overfilled. | Private and final styles can’t be hoofed. |
| Argument list should be different while doing method overloading. | Argument list should be same in method overriding. |
Method Overloading
Method Overloading is a collect time polymorphism. In method overloading, further than one method shares the same method name with a different hand in the class. In method overloading, the return type can or can’t be the same, but we’ve to change the parameter because, in java, we can’t achieve the method overfilling by changing only the return type of the method.
Example: of Method Overloading
class MethodOverloadingVaibhav {
static int add(int aa, int ba)
{
return aa + ba;
}
static int add(int aa, int ba, int ca)
{
return aa + ba + ca;
}
public static void main(String args[])
{
System.out.println("add() with 2 parameters");
System.out.println(add(4, 6));
System.out.println("add() with 3 parameters");
System.out.println(add(4, 6, 7));
}
}
Output
add() with 2 parameters 10 add() with 3 parameters 17
Method Overriding
Method Overriding is a Run time polymorphism. In method overriding, the deduced class provides the specific perpetration of the method that’s formerly handed by the base class or parent class. In method overriding, the return type must be the same orco-variant( return type may vary in the same direction as the deduced class).
Example: Method Overriding
class AnimalEx {
void eat()
{
System.out.println("eat() method of base class");
System.out.println("eating.");
}
}
class DogEx extends AnimalEx {
void eat()
{
System.out.println("eat() method of derived class");
System.out.println("Dog is eating.");
}
}
class MethodOverridingExVaibhav {
public static void main(String args[])
{
DogEx d1 = new DogEx();
AnimalEx a1 = new AnimalEx();
d1.eat();
a1.eat();
AnimalEx animal = new DogEx();
// eat() method of animal class is overridden by
// base class eat()
animal.eat();
}
}
Output
eat() method of derived class Dog is eating. eat() method of base class eating. eat() method of derived class Dog is eating.
Affair explanation Then, we can see that a method eat() has hoofed in the deduced class name Canine that’s formerly handed by the base class name Beast. When we produce the case of class Canine and call the eat() method, we see that only deduced class eat() method run rather of base class method eat(), and When we produce the case of class Beast and call the eat() method, we see that only base class eat() method run rather of deduced class method eat().
