0 Replies Latest reply: Mar 8, 2012 2:49 PM by 922697 RSS

    Change button color

      /* 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