Anilrgowda

Classes are used in Object Oriented Programming. Classes are blueprints that represent all objects of specific kind and contain functions/methods(things to do) and variables/fields(information to remember) and when an object creates an instance of a class.
The form for a class is
public class ClassName
{ //start of class code
private int varibleOne; //variable one
public int variableTwo; //variable two

public ClassName(Object parameter) //Constructor
{//contstuctor start

}//constructor end
public void methodName(Object parameter, int parameterTwo) //Function
{ //start of method
} //end of method

}//end of class code


Any class, constructor, function is started and and ended by brackets { }
The constructors and methods can have parameters. Parameters are the stuff in the ( ).
Public refers to classes, methods and constructors that other class can reference (only methods should really be private). Private are methods only a method can access.
Parameters are information given to a constructor or function that can allow it to do a function to. Now it is not necessary to give a parameter, in which case just leave blank () or to do anything with the parameter.

public class Adding
{
private int storedNumber;

public Adding(int number)
{
storedNumber = number;
}
public void addToStored(int newNumber)
{
storedNumber = storedNumber + newNumber;
}
}

The 'number' parameter given to the Adding constructor when an object of Adding is created is stored in the variable for the class 'storedNumber'. Once the constructor has finished executing, the 'number' variable is lost. This is true for a parameter or local variable. So a way to think about it... a variable only lasts inside its brackets.
The method takes the variable storedNumber and an integer parameter given, adds them together and stores them inside the 'storedNumber'.

So when you create an object of a class, you have variables that hold information and function to do things.
So you could have two objects of the class: Adding and then be able to call functions of the two object.
The functions will do the same function but you could change the numbers and information.