Extend the Jbutton class and in that override the repaint() method and call setBackground(COLOR.ORANGE), to change the button color.
Now use this class to create all your buttons. If you wish to change color of a specific button, call the setBackground(COLOR.ORANGE) method on that specific button. Hope this helps. Have a look at the code below
package solutions;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.InputVerifier;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
public class VerifierTest extends JFrame {
private static final long serialVersionUID = 1L;
public VerifierTest() {
final JTextField tf = new JTextField("TextField1");
getContentPane().add(tf, BorderLayout.NORTH);
tf.setInputVerifier(new PassVerifier());
final JTextField tf2 = new JTextField("TextField2");
getContentPane().add(tf2, BorderLayout.SOUTH);
tf2.setInputVerifier(new PassVerifier());
final JButton b = new JButton("Button");
b.setBackground(Color.ORANGE);
b.setVerifyInputWhenFocusTarget(true);
getContentPane().add(b, BorderLayout.EAST);
b.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
if (!tf.getInputVerifier().verify(tf)) {
JOptionPane.showMessageDialog(tf.getParent(), "illegal value: " + tf.getText(), "Illegal Value",
JOptionPane.ERROR_MESSAGE);
}
if (b.isFocusOwner()) {
System.out.println("Button clicked");
}
}
});
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public static void main(String[] args) {
Frame frame = new VerifierTest();
frame.setSize(400, 200);
frame.setVisible(true);
}
class PassVerifier extends InputVerifier {
@Override
public boolean verify(JComponent input) {
final JTextField tf = (JTextField) input;
String pass = tf.getText();
if (pass.equals("Manish")) {
return true;
} else {
return false;
}
}
}
}
Comment the line "b.setBackground(Color.ORANGE);" and see the difference.