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tips4java · web-flow · commit 11f166742d9b · 2023-08-22T10:55:01.000-04:00
diff --git a/source/AlphaContainerDemo.java b/source/AlphaContainerDemo.java
@@ -0,0 +1,46 @@
+import java.awt.*;
+import javax.swing.*;
+import javax.swing.border.*;
+
+public class AlphaContainerDemo
+{
+	public static void main(String[] args)
+	{
+		SwingUtilities.invokeLater(new Runnable() {
+			public void run() {
+				createAndShowGUI();
+			}
+		});
+	}
+
+	public static void createAndShowGUI()
+	{
+		JComponent west = createPanel("Painting Artifacts");
+		JComponent east = new AlphaContainer( createPanel("Using AlphaContainer") );
+
+		JFrame frame = new JFrame("Backgrounds With Transparency");
+		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		frame.add(west, BorderLayout.WEST);
+		frame.add(east, BorderLayout.EAST);
+		frame.pack();
+		frame.setLocationRelativeTo(null);
+		frame.setVisible(true);
+	}
+
+	public static JPanel createPanel(String text)
+	{
+		JPanel panel = new JPanel( new GridLayout(0, 1));
+		panel.setBorder( new TitledBorder(text) );
+		panel.setBackground( new Color(255, 0, 0, 20) );
+
+		for (int i = 0; i < 5; i++)
+		{
+			JCheckBox checkBox = new JCheckBox("Check Box " + i);
+			checkBox.setOpaque(false);
+			panel.add(checkBox);
+		}
+
+		panel.setPreferredSize( new Dimension(200, 200) );
+		return panel;
+	}
+}
