1 files changed, 48 insertions, 0 deletions
diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Listing2901.java b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2901.java
new file mode 100644
index 0000000..5a38e94
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2901.java
@@ -0,0 +1,48 @@
+/* Listing2901.java */
+
+import java.awt.*;
+import java.awt.event.*;
+
+class CloseableFrame
+extends Frame
+{
+  public CloseableFrame()
+  {
+    this("");
+  }
+
+  public CloseableFrame(String title)
+  {
+    super(title);
+    addWindowListener(
+      new WindowAdapter() {
+        public void windowClosing(WindowEvent event)
+        {
+          setVisible(false);
+          dispose();
+        }
+      }
+    );
+  }
+}
+
+public class Listing2901
+{
+  public static void main(String[] args)
+  {
+    CloseableFrame wnd = new CloseableFrame("CloseableFrame");
+    wnd.setBackground(Color.lightGray);
+    wnd.setSize(300,200);
+    wnd.setLocation(200,100);
+    wnd.setVisible(true);
+    wnd.addWindowListener(
+      new WindowAdapter() {
+        public void windowClosed(WindowEvent event)
+        {
+          System.out.println("terminating program...");
+          System.exit(0);
+        }
+      }
+    );
+  }
+}
+\ No newline at end of file