--- /dev/null	2018-05-11 11:34:52.000000000 -0700
+++ new/src/demo/share/jfc/J2Ddemo/java2d/CustomControls.java	2018-05-11 11:34:52.000000000 -0700
@@ -0,0 +1,133 @@
+/*
+ *
+ * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ *   - Neither the name of Oracle nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+package java2d;
+
+
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import javax.swing.JPanel;
+import javax.swing.border.EtchedBorder;
+
+
+/**
+ * A convenience class for demos that use Custom Controls.  This class
+ * sets up the thread for running the custom control.  A notifier thread
+ * is started as well, a flashing 2x2 rect is drawn in the upper right corner
+ * while the custom control thread continues to run.
+ */
+@SuppressWarnings("serial")
+public abstract class CustomControls extends JPanel implements Runnable {
+
+
+    protected Thread thread;
+    protected boolean doNotifier;
+    private CCNotifierThread ccnt;
+    private String name = "foo.bar Demo";
+    private static final Color blue = new Color(204, 204, 255);
+
+
+    public CustomControls() {
+        setBorder(new EtchedBorder());
+        addMouseListener(new MouseAdapter() {
+
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                if (thread == null) { start(); } else { stop(); }
+            }
+        });
+    }
+
+    public CustomControls(String name) {
+        this();
+        this.name = name + " Demo";
+    }
+
+    @Override
+    public void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        g.setColor(doNotifier ? blue : Color.gray);
+        g.fillRect(getSize().width-2, 0, 2, 2);
+    }
+
+    public void start() {
+        if (thread == null) {
+            thread = new Thread(this);
+            thread.setPriority(Thread.MIN_PRIORITY);
+            thread.setName(name + " ccthread");
+            thread.start();
+            (ccnt = new CCNotifierThread()).start();
+            ccnt.setName(name + " ccthread notifier");
+        }
+    }
+
+    public synchronized void stop() {
+        if (thread != null) {
+            thread.interrupt();
+            if (ccnt != null) {
+                ccnt.interrupt();
+            }
+        }
+        thread = null;
+    }
+
+
+    // Custom Controls override the run method
+    @Override
+    public void run() {
+    }
+
+
+    /**
+     * Notifier that the custom control thread is running.
+     */
+    class CCNotifierThread extends Thread {
+
+        @Override
+        @SuppressWarnings("SleepWhileHoldingLock")
+        public void run() {
+            while (thread != null) {
+                doNotifier = !doNotifier;
+                repaint();
+                try {
+                    Thread.sleep(444);
+                } catch (Exception ex) {
+                    break;
+                }
+            }
+            doNotifier = false; repaint();
+        }
+    }
+}