LESSON 4 PART 1

ENCAPSULATION

THE BINDING OF DATA AND FUNCTIONALITIES INTO A SINGLE UNIT.

ENCAPSULATION

IN JAVA IS A MECHANISM OF WRAPPING THE VARIABLES AND METHODS TOGETHER AS A SINGLE UNIT. ALSO CALLED DATA HIDING.

GETTER AND SETTER

ARE METHODS USED TO PROTECT YOUR DATA AND MAKE YOUR CODE MORE SECURE.

GETTER (METHOD)

IS USED TO RETRIEVE THE VALUE OF A PRIVATE FIELD IN A CLASS.

SETTERS (METHOD)

IS USED TO SET OR UPDATE THE VALUE OF A PRIVATE FIELD IN A CLASS.

FINAL KEYWORD

WHEN A VARIABLE IS DECLARED WITH THIS, ITS VALUE CANNOT BE CHANGED AFTER IT HAS BEEN INITIALIZED. THIS MAKES THE VARIABLE CONSTANT.

DATA HIDING

IS A TECHNIQUE OF HIDING INTERNAL OBJECTS DETAILS. RESTRICTS THE DATA USE TO ASSURE DATA SECURITY.

ENCAPSULATION

WRAPS UP THE COMPLEX DATA TO PRESENT A SIMPLE VIEW TO THE USER.