#25 Method Overloading in Java

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#25 Method Overloading in Java

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Күн бұрын

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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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Пікірлер: 25

@yitingchen8278 Жыл бұрын

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

@bestlearn6131 Жыл бұрын

Don't make it harder by your complicated words

@AnuragRawat01 Жыл бұрын

@@bestlearn6131 that's not hard at all he just gave simple definition 😃

@anmol3457 10 ай бұрын

@@bestlearn6131 knowing the meaning of those words is necessary to understand what a method overloading really does...

@hiiprends8993 10 ай бұрын

@@bestlearn6131he just explained 6min video in two sentences

@syeddanish5334 7 ай бұрын

Best explanation sir

@shazirnazir3501 11 ай бұрын

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)); } }

@Dbsski 8 ай бұрын

Thank you so much sir😊

@vinaykumarbandarapalli216 Жыл бұрын

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.

@projyoti7489 3 ай бұрын

Great teaching skills

@rudra2036 2 ай бұрын

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

@rahulbarot3145 9 ай бұрын

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

@user-wq6lg3li8j 6 ай бұрын

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

@agilan1546 8 ай бұрын

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?

@DnyaneshAgale1 4 ай бұрын

Yes........!! Your output will be XY.00

@achal3071 11 ай бұрын

Thank you sir 😊❤

@actandrepeat Жыл бұрын

Can you make a video on JavaDoc?

@GOLLAPALLIAKKULAPPAGARIHRUTHIK Жыл бұрын

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

@arishtotlearishtotle8197 Жыл бұрын

Just simple as in parameter u should mention the values as it mention in the method...Java will take the crt parameter and complie the value polymorphism