//: gui/CheckBoxes.java // Using JCheckBoxes. import javax.swing.*; import java.awt.*; import java.awt.event.*; import static net.mindview.util.SwingConsole.*; public class CheckBoxes extends JFrame { private JTextArea t = new JTextArea(6, 15); private JCheckBox cb1 = new JCheckBox("Check Box 1"), cb2 = new JCheckBox("Check Box 2"), cb3 = new JCheckBox("Check Box 3"); public CheckBoxes() { cb1.addActionListener((ActionEvent e) -> { trace("1", cb1); }); cb2.addActionListener((ActionEvent e) -> { trace("2", cb2); }); cb3.addActionListener((ActionEvent e) -> { trace("3", cb3); }); setLayout(new FlowLayout()); add(new JScrollPane(t)); add(cb1); add(cb2); add(cb3); } private void trace(String b, JCheckBox cb) { if(cb.isSelected()) t.append("Box " + b + " Set\n"); else t.append("Box " + b + " Cleared\n"); } public static void main(String[] args) { run(new CheckBoxes(), 200, 300); } } ///:~