In Array of String we use array of String data type .We can declare array with size.In above example we use "gre" variable of Array of string type and  is the size of an array.
 means we can enter only 3 strings not more than 3, If we want to change or extend the values(strings) then we must change the size of an array.We need not change the loop
because here we use length for count the length of string and this counts the character till ends.
In Array the variables store a list of values.Array are of two types… Single Dimensional Array and Multi or two Dimensional Array.In single there is single row with multiple columns or multi row with single column.In Double dimensional Array values are stored in multiple rows or multiple columns.
An applet is a window based event driven program and its wait until an event occurs.
Every Java applet inherits a set of default behaviours from the Applet class. Whe an applet is loaded, it undergoes a series of changes in its state .
The applet is used to display coloured bubbles of different sizes(all bubbles are of different size).
The choice or selection of the colour or size is done randomly. The array colors(colors) is used to store the different colours.
The Math.random() is used to randomly select the colour from the colors array and to calculate the size of the bubble.
The C++ Language was developed at AT&T Bell Laboratories by Bjarne Stroustrup. C++ pronounced C plus plus here “++” means the C increment operator. C++ supports the object oriented technology and C does not support object oriented language means real world entities. This is because C++ is the object oriented language. C is the structured programming language but C++ is the object oriented language.
Types of Programming Language
a) Machine Level Language
b) Assembly Language
CHARACTERISTICS OF C LANGUAGE
C is a programming language that has been developed by Dennis Ritchie in 1970's.
1)Simple and Clear----C has richest collection of data types(int,float,char), operators(symbolic representation) and inbuilt functions.
Main concept of object oriented language
1) CLASSES :
Classes are the basis for any object oriented system classes have well defined boundaries and describe a set of objects that share similar properties and perform similar functions. Classes can be reused within a system or they can be used while developing a new system.
OBJECT ORIENTED PROGRAMMING
Before we talk about object oriented programming, we must know about all the programming like structured, procedural etc.