#25 Method Overloading in Java

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In this lecture we will learn:
- Parameters of a method
- Method overloading in Java
- When does method overloading happen?
- Different ways of method overloading in Java

#1
It is not compulsory that a class should have methods and variables. It will be empty also.
- The parameters that except the values in a method should be equal to the parameters that we pass in a method to call it.
- As it might create a problem if the parameters excepted by the method are not equal to the number of values passed.
- So, to overcome this problem we do overloading.
- As we can have two methods we the same name but different parameters.
- Either the number of parameters or the type of parameters should be different.
- Method with the same name and parameters but with different return types will also not work. The return type does not matter here. Method name and parameters matter only.

#2
Method overloading:- In Java, there can be more than one method with the same name but the number of parameters or type of parameters should be different.

- Method overloading is also known as Compile-time Polymorphism, Static Polymorphism, or Early binding in Java.
- In Method overloading compared to parent argument, child argument will get the highest priority.

#3
Different ways of Method Overloading in Java:-
1. Changing the number of parameters
- Method overloading can be achieved by changing the number of parameters while passing to different methods.

2. Changing Data Types of the Arguments
- If methods have the same name but have different parameter types then also methods are considered as overloaded.

3. Changing the Order of the Parameters of Methods
- By rearranging the parameters of two or more overloaded methods.

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[yitingchen]

Class can have same name methods, only requirement is they should have different parameters, name and type is important!

[rahulbarot]

Sir class can be one type of function because in other language it's have same syntax somewhat

[agilan]

When we return double value, the variable in main class to which the value will be assigned should also be of the type double, right?

[rudra]

I think JavaScript handle's this issue quite interestingly with the help of rest parameter.

[vinaykumarbandarapalli]

I feel Java is unable to satisfy user requirements here.. I may return a value I may not return a value with same type and number of arguments. But Java doesn't support that.

[AmalManoj-mz]

sir could you help how to give input into java like scanf in c

[shazirnazir]

class Calculator {
int add(int... numbers) {
int sum = 0;
for (int num : numbers) {
sum += num;
}
return sum;
}
}

public class Main {
public static void main(String[] args) {
Calculator calc = new Calculator();

System.out.println(calc.add(5, 6));
System.out.println(calc.add(5, 6, 7));
System.out.println(calc.add(5, 6, 7, 8));
}
}

[darshilchitranshi]

No two methods with same name must have same parameter type and same number of parameters.

[vedantsargara]

i know very out of subject thing
i kinda went back in nostalgia when he said got7 at 2:00

💚💚💚💚

[paragonmarketingagency]

Kuss marwa rha h english accent dekh apna

[GOLLAPALLIAKKULAPPAGARIHRUTHIK]

sir in this video u took same method name "add" then how could the class demo can understand which one need to take