Choosing colors with JColorChooser. - Java Swing

Java examples for Swing:JColorChooser

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Description

Choosing colors with JColorChooser.

Demo Code

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JColorChooser;
import javax.swing.JPanel;

class ShowColors2JFrame extends JFrame {
  private final JButton changeColorJButton;
  private Color color = Color.LIGHT_GRAY;
  private final JPanel colorJPanel;

  // set up GUI//from   w ww  .j  a  v a  2 s . c  om
  public ShowColors2JFrame() {
    super("Using JColorChooser");

    // create JPanel for display color
    colorJPanel = new JPanel();
    colorJPanel.setBackground(color);

    // set up changeColorJButton and register its event handler
    changeColorJButton = new JButton("Change Color");
    changeColorJButton.addActionListener(e -> {
      color = JColorChooser.showDialog(ShowColors2JFrame.this,
          "Choose a color", color);

      // set default color, if no color is returned
        if (color == null)
          color = Color.LIGHT_GRAY;

        // change content pane's background color
        colorJPanel.setBackground(color);
      });

    add(colorJPanel, BorderLayout.CENTER);
    add(changeColorJButton, BorderLayout.SOUTH);

    setSize(400, 130);
    setVisible(true);
  }
}

public class Main {
  // execute application
  public static void main(String[] args) {
    ShowColors2JFrame application = new ShowColors2JFrame();
    application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}

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