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Views: 2412 | Replies: 3
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Join Date: Aug 2004
Posts: 11
Reputation: 
Rep Power: 5
Solved Threads: 0
Newbie Poster
Hi,
This may be a really basic query, but im not really a java expert! In my program, i am drawing rectangles and the colour of the rectangle depends on a number stored in an array, so if the number is 1 then i want to set the colour to red, if 2 then blue etc. I have to keep changing the colour a lot of times (atleast 10) so instead of writing a switch statement each time i have created the class below. The thins im having trouble calling the method in my main program. I have tried d.decide(A[i]), but its not working. Am i calling it in the wrong way? Any help would be great!
Thanks!
import java.awt.*;
public class colors{
public Color decide(int a){
if(a==1){
return Color.red;
}
if(a==2){
return Color.blue;
}
if(a==3){
return Color.green;
}
if(a==4){
return Color.pink;
}
if(a==5){
return Color.yellow;
}
}
}
This may be a really basic query, but im not really a java expert! In my program, i am drawing rectangles and the colour of the rectangle depends on a number stored in an array, so if the number is 1 then i want to set the colour to red, if 2 then blue etc. I have to keep changing the colour a lot of times (atleast 10) so instead of writing a switch statement each time i have created the class below. The thins im having trouble calling the method in my main program. I have tried d.decide(A[i]), but its not working. Am i calling it in the wrong way? Any help would be great!
Thanks!
import java.awt.*;
public class colors{
public Color decide(int a){
if(a==1){
return Color.red;
}
if(a==2){
return Color.blue;
}
if(a==3){
return Color.green;
}
if(a==4){
return Color.pink;
}
if(a==5){
return Color.yellow;
}
}
}
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Join Date: Aug 2004
Location: Hanover
Posts: 152
Reputation:
Rep Power: 5
Solved Threads: 1
Junior Poster
Please list the caller's source code. The function you listed does not seem to have any serious flaw.
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Join Date: Aug 2004
Posts: 11
Reputation:
Rep Power: 5
Solved Threads: 0
Newbie Poster
Thats the problem i am having, could u tell me how i would call it in the main code?
Thanks
Thanks
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Join Date: Aug 2004
Location: Hanover
Posts: 152
Reputation:
Rep Power: 5
Solved Threads: 1
Junior Poster
This should go in your paint function or any function for which you have a Graphics object available.
See my post here if you want to know how to use loops to step through your array.
http://www.daniweb.com/techtalkforum...ead.php?t=9203
Hope this helps!
Ed
public void paint(Graphics g) {
// your class colors... by the way, this is not java
// convention to lower case class names. Should be Colors
colors colorChooser = new colors();
Color c = colorChooser.decide(A[i])
g.setColor(c);
// Color is now set :-)
// now you can g.drawRect(....) with the correct color.
}See my post here if you want to know how to use loops to step through your array.
http://www.daniweb.com/techtalkforum...ead.php?t=9203
Hope this helps!
Ed
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