Class Variables

Class Variables:-

               The variables in the class should specify the following properties when they are defined.

1. Optional: Modifiers such as public or final as well as static.
2. Required: The data type of the variable, such as string or boolean.
3. Optional: The values of the variable.
4. Optional: The name of the variable.

Syntax:

       [public/private/protected/global/final] [static] data_type Variable_name

Ex:

       Private Static final Integer My_int;

       Private final Integer i=1;

Class Methods:-

       To define a method, specify the following.

1.Optional: Modifiers, such as public or protected.

2.Required: The data type of the values returned by the method such as string or Integer.

                      Use Void if the method does not return a value.

3.Required: A list of input parameters for the method, separated by commas, each preceded by its                         data type, and enclosed in parameters(). If there are no parameters , use a set of empty                          parameters.A method can only have 32  input parameters.

4.Required: The body of the method, enclosed in braces{ }. All the code for the method, including any local variable declarations, is contained here.

Syntax:  

      (Public/Private/Protected/global) [override] [static] data_type method_name(input parameters)

     {

           

           // The body of the method;

               }

Ex: Public static Integer getInt()

        {

               return My_Int;

                    }

EX:   Public class Example

           {

           

             Public Integer Show(Integer age)

                {

                   system.debug( 'Myage is'  +age);

                            }

                     }