Day-2
Let's Continue..........................................
in java we are having '3' basic Programming elements we know
1) Class [Class is use above 90% in java]
2) Interface [Interface is use in 8 to 10% ]==>when we use -"if we want to achieve abstraction. "
3) Enum [we use less than 2%]==>When we use-"if our project is having universal constants"
LET'S GOTO THE IMPORTANT TOPIC IN JAVA ---JAVA METHOD
Q)WHAT IS A JAVA METHOD?
A:It is a place where we will be writing the 'Business Logic'
i think you all are one doubt!!!
==>what is BUSINESS LOGIC-"Business logic is any kind of code."
Lets go learn Syntax of a java Method ?
()
{
----------;
----------; //Method body/Functionality/implementation
----------;
}
Note :()-Parenthesis
We know what is Access Modifiers let's learn 'Return Type'
Return Type:
We are having '4' options for returning a value from a method
1)void
2)We can use all the '8' Primitive datatypes.[int ,byte ,short ,long ,float ,double ,char ,boolean]
3)Classes
4)Interfaces
in java mostly used in void return type why because
void -No Need to Return anything
Example:
Public void meth()
{
-------;
}
==>we can write any number of methods inside a class.
==>A java Method will be executed "ONLY" whenever we are calling it.
==> We need to call a method with the help of its "Respective" Class Object.
Note:
1) Every java Program execution start from main() and ends with main()
2)main() is like a entry point our program.
3)Without writing main() in our Program we will not be able to run our code.
We will discuss what is object!!!
waiting for Day-3 ----------------------------------------------------
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