The technique used to copy one array into another is same as used to copy 4 separate variable. In an array we use same type elements and fixed size collection means finite number of objects.Array elements are counted beginning with 0(zero).
Array having more than one dimensional are called multi dimensional([multiple rows][ multiple col]) arrays. An array having two dimensional is called two-dimensional([2rows][2col]) array.
The StringBuffer class is mostly used when we have to make a lot of modifications(any changes) to Strings of characters. String class does not support string mutability. That is why we use StringBuffer class.Objects of StringBuffer class can be modified a number of times.
Fibonacci series is a series of integer in which each integer is equal to the sum of the two preceding integers in the series.The series is 0,1,1,2,3,5,8………… looks like
showStatus() is used to display the message in the status line.This method display a string in the status line .The status line is located at the bottom of the screen(browser or the appletviewer).