Mouse over JButton

Question

I have an 10 x 10 array of JButtons in my project. I was just wondering how do i find out which button the mouse cursor is over at any given time?
I was trying to get x y mouse coordinates but how do i know over which JButton I am?
Thanks for any advice
Regards

Answer 1

Could anybody help me with answer: How could I execute below method:
public void mouseMoved(MouseEvent e) {
          System.out.println("Mouse over Button");
     }without clicking on the button. I have MouseListener on each button. I can exetue this method only when i'm clicking on button. What's wrong with my code? I wanna execute this method when my mouse is over the button :-(. Could help me with my example?
thanks in advance.
regards.
package gui;
import java.awt.Component;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.util.ArrayList;
import java.util.EventObject;
import javax.swing.AbstractCellEditor;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTree;
import javax.swing.event.ChangeEvent;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeCellEditor;
import javax.swing.tree.TreeCellRenderer;
public class TreeSample {
     JTree tree = null;
     CheckBoxNodeRenderer renderer;
     public void showTree() {
          JFrame frame = new JFrame("Tree");
          ArrayList<Object> ipDevice = new ArrayList<Object>();
        ipDevice.add("IP Device");
        DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("Root");
        DefaultMutableTreeNode node = new DefaultMutableTreeNode(new CheckBoxNode("IP Device", false));
        rootNode.add(node);
        tree = new JTree(rootNode);
        renderer = new CheckBoxNodeRenderer();
        tree.setCellRenderer(renderer);
        tree.setCellEditor(new CheckBoxNodeEditor(tree));
        tree.setEditable(true);
        frame.setSize(400,400);
        frame.add(tree);
        frame.setVisible(true);
     public static void main(String args[]) {
          System.out.println("Test");
          TreeSample ts = new TreeSample();
          ts.showTree();
class CheckBoxNodeRenderer implements TreeCellRenderer {
    private JButton leafRenderer = new ButtonCreator("TEST");
    protected JButton getLeafRenderer(){
        return leafRenderer;
    public CheckBoxNodeRenderer() {
    public Component getTreeCellRendererComponent(JTree tree, Object value,
            boolean selected, boolean expanded, boolean leaf, int row,
            boolean hasFocus) {
        Component returnValue;
        returnValue = leafRenderer;
        return returnValue;
class CheckBoxNodeEditor extends AbstractCellEditor implements TreeCellEditor, MouseMotionListener {
    CheckBoxNodeRenderer renderer = new CheckBoxNodeRenderer();
    ChangeEvent changeEvent = null;
    JTree tree1;
    DefaultMutableTreeNode editedNode;
    public CheckBoxNodeEditor(JTree tree) {
        this.tree1 = tree;
    public Object getCellEditorValue() {
        JButton checkbox = renderer.getLeafRenderer();
        return checkbox;
    public boolean isCellEditable(EventObject event) {
        return true;
    public boolean shouldSelectCell(EventObject ev) {
         return true;
    public Component getTreeCellEditorComponent(final JTree tree, Object value,
            boolean selected, boolean expanded, boolean leaf, int row) {
        System.out.println("GetTree");
        Component editor = renderer.getTreeCellRendererComponent(tree, value,
                true, expanded, true, row, true);
        return editor;
     public void mouseDragged(MouseEvent e) {
     public void mouseMoved(MouseEvent arg0) {
class CheckBoxNode {
    String text;
    boolean selected;
    public CheckBoxNode(String text, boolean selected) {
        this.text = text;
        this.selected = selected;
    public boolean isSelected() {
        return selected;
    public void setSelected(boolean newValue) {
        selected = newValue;
    public String getText() {
        return text;
    public void setText(String newValue) {
        text = newValue;
class ButtonCreator extends JButton implements MouseMotionListener {
     public ButtonCreator() {
          this.addMouseMotionListener(this);
     public ButtonCreator(String p_name) {
          this.setText(p_name);
          this.addMouseMotionListener(this);
     public void mouseDragged(MouseEvent e) {
     public void mouseMoved(MouseEvent e) {
          System.out.println("Mouse over Button");
}