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0 Replies Latest reply: Mar 8, 2012 12:49 PM by 922697 RSS

Change button color

922697 Newbie
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/* I am trying to add a thread to my code that will change the button based on the color pressed for 8 seconds and then fade the color back to white and when the user click
* on another button it will do the same thing... The user can click(the button) at least 10 times. I have done majority of the code, I just not sure where I can add the thread * and get it to change colors.......... Please help!!!

// CODE:

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.plaf.basic.BasicBorders.RolloverButtonBorder;

public class ColorThread extends JFrame implements ActionListener {

     // Global variables
     Thread th = new Thread();
     public static JButton[] gridRef;
     // size of the frame
     public static ColorThread window;
     public static final int WIDTH = 500;
     public static final int HEIGHT = 500;

     // Creating the JFrame
     public ColorThread(String title) {
          setSize(WIDTH, HEIGHT);

     public static void main(String[] args) {

          // // Creating the Thread
          // Runnable changer = new Runnable(){
          // public void run(){
          // };

          // Create JFrame layout
          window = new ColorThread(" CS 302 Lab HW 7");
          window.setLayout(new BorderLayout());

          // 8 x 8 Gridlayout
          int rows = 8;
          int cols = 8;

          // North(top) JPanel added to the JFrame
          JPanel text = createTracking(); // calling creatTracking
          window.add(text, BorderLayout.NORTH);

          // Center(middle) JPanel added to the JFrame
          JPanel grid = createGrid(rows, cols); // calling createGrid
          window.add(grid, BorderLayout.CENTER);

          // South(bottom) JPanel added to the JFrame
          JPanel button = createButtons(); // calling createButton
          window.add(button, BorderLayout.SOUTH);

          // setting the JFrame visible

     // createCrid method - will be used to go to the center of the BorderLayout
     public static JPanel createGrid(int rows, int cols) {
          // panel to hold grid
          JPanel grid = new JPanel();
          // grid's buttons 8x*
          gridRef = new JButton[rows * cols];
          // grid layout
          grid.setLayout(new GridLayout(rows, cols));
          // background of the grid
          // loop to add buttons 0 -63, with buttons label 0-63
          for (int i = 0; i < 64; i++) {
               JButton button = new JButton(Integer.toString(i));
               // add buttons to the grid
               // gridRef to store the array of buttons
               gridRef[i] = button;

          // return the grid that will go to the center panel
          return grid;


     // createButtons - will be used to go to the bottom of the BorderLayout
     public static JPanel createButtons() {

          // panel to hold bottons
          JPanel button = new JPanel();

          // panel layout
          button.setLayout(new GridLayout(1, 3));

          // create buttons for bottom panel
          JButton red = new JButton("Red");
          JButton green = new JButton("Green");
          JButton blue = new JButton("Blue");

          // bottom panel button listeners

          // adding buttons to the bottom panel

          // return the buttons that will go to the bottom panel
          return button;

     // creatTracking method - will be used to go to the top of the BorderLayout
     public static JPanel createTracking() {

          // panel to hold text field
          JPanel text = new JPanel();

          // layout of top panel
          text.setLayout(new GridLayout(1, 3));

          // text field for tRed - set text field disable
          JTextField tRed = new JTextField();

          // text field for tGreen - set text field disable
          JTextField tGreen = new JTextField();

          // text field for tBlue - set text field disable
          JTextField tBlue = new JTextField();

          // adding text field to top panel

          // return the text field that will go to the top panel
          return text;

     public void actionPerformed(ActionEvent e) {
          String currentColor = e.getActionCommand();
          Color color;// (0,255,0);

          * conditions for what button is pressed on the bottom panel("Red", "Green", "Blue"),
          * then that will color the button that color will correspond to buttons on the grid
          if (currentColor.equals("Red"))
               color = Color.RED;
          else if (currentColor.equals("Green"))
               color = Color.GREEN;
               color = Color.BLUE;

          // setting the buttons to be randomly chosen when clicked by the bottom panel color buttons
          int random = (int) (Math.random() * 64);
          // will hold the color of the button in the grid using an index array [random]
          gridRef[random].setBackground(color); // JButton Object





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