color properties

I want to set color properties of panel objects such as buttons. Easy enough...however I want to pass the color in as a variable...such as...

btnClose.setBackground(Color.VARIABLE);

but that doesn't work. How would I pass a variable to this method?

Steve

All you would have to do is create a new instance of a Color object with the rgb values that you choose then pass that object to a method that taks a Color object as an arguement.

Or you could pass the r, g, b values to the method and create the Color object within the method itself.

Code:

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public void changeColor(int r,int g, int b){
  jb.setBackground(new Color(r,g,b));
}

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Here is an example that i was working on for a little while. All it does is change the r,g,b values of a JButton when clicked. If any of the r,g,b values is > 255 the background color of the JButton is reset to the orgional color.

Code:

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import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

class X{
 private JFrame jf;
 private JButton jb;
 private Container c;
 private int r;
 private int g;
 private int b;
 
 public X(){
  jf = new JFrame();
  jb = new JButton("Button"); 
  c = jf.getContentPane();
  c.add(jb, BorderLayout.SOUTH);
  jf.setSize(300,200);
  jf.setVisible(true);   
 }

 public void changeColor(int r,int g, int b){
  if((r < 255) && (g < 255) && (g < 255)){
  jb.setBackground(new Color(r,g,b));
  }else{
    jb.setBackground(new Color(0,0,0));
    setValues(true);
  }
 }

 public void addButtonListener(){
  jb.addActionListener(new ActionListener(){
  public void actionPerformed(ActionEvent avt){
    changeColor(r,g,b);
    setValues(false);
  }
 });
}

public void setValues(boolean reset){
  if(!reset){
    r += 14;
    g += 7;
    b += 1;
  }else{
    r = 0;
    g = 0;
    b = 0;
  }
 }

 public void addWindowMonitor(){
  jf.addWindowListener(new WindowAdapter(){
    public void windowClosing(WindowEvent evt){
    System.exit(0);
  }
  });
 }
}

 public class E{
  public static void main(String[] args){
    X x = new X();
    x.addButtonListener();
    x.addWindowMonitor();
  }
 }

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