Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

need simple explanition for a simple code

Posted on 2002-04-28
2
Medium Priority
?
280 Views
Last Modified: 2010-03-31
i have this function to produce different colors ,
why i need the word final here , what is its function ?
does the function work with out it ?

public static final String[] COLORS={
       "#EEE8AA","#FFEFD5","#FFDAB9","#FFFFFF"
  };
0
Comment
Question by:star4
2 Comments
 
LVL 4

Accepted Solution

by:
pellep earned 200 total points
ID: 6975378
That is not a function, that's a constant (static final). The different string values in the array represent different colors according to the RGB color scheme.
R=Red
G=Green
B=Blue

Thus, #EEE8AA means EE parts red, E8 parts green and AA parts blue. The values are hexadecimal ie ranging from
00 = 0
to
FF = 255
Pure red in this format would look like #FF0000, green would look like #00FF00, blue #0000FF. The color white is an equal mix of the entire spectrum and thus looks like #FFFFFF.

as for the keyword 'final'. That simply tells the compiler that this value cannot be changed in code later
ie

class Test {
private final String finalString = "FINAL STRING";
public void setFinalString(String newVal) {
this.finalString = newVal;
//Compiler will generate an error
//because you are trying to change a 'final' variable
}
}
0
 
LVL 2

Expert Comment

by:vasan_sr
ID: 6976527
when u declare as final we cannot change the value. So we will use final.(final i =10; we cannot change the value. Always i remains 10)

regards
VasanS
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
This video teaches viewers about errors in exception handling.
Suggested Courses

885 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question