--- /dev/null	2018-05-11 11:35:02.000000000 -0700
+++ new/src/demo/share/jfc/J2Ddemo/java2d/PerformanceMonitor.java	2018-05-11 11:35:01.000000000 -0700
@@ -0,0 +1,202 @@
+/*
+ *
+ * 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.BorderLayout;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.image.BufferedImage;
+import javax.swing.JPanel;
+import javax.swing.border.EtchedBorder;
+import javax.swing.border.TitledBorder;
+
+
+/**
+ * Displays the time for a Surface to paint. Displays the number
+ * of frames per second on animated demos.  Up to four surfaces fit
+ * in the display area.
+ */
+@SuppressWarnings("serial")
+public class PerformanceMonitor extends JPanel {
+
+    Surface surf;
+
+    public PerformanceMonitor() {
+        setLayout(new BorderLayout());
+        setBorder(new TitledBorder(new EtchedBorder(), "Performance"));
+        add(surf = new Surface());
+    }
+
+
+    public class Surface extends JPanel implements Runnable {
+
+        public Thread thread;
+        private BufferedImage bimg;
+        private Font font = new Font(Font.SERIF, Font.PLAIN, 12);
+        private JPanel panel;
+
+        public Surface() {
+            setBackground(Color.black);
+            addMouseListener(new MouseAdapter() {
+
+                @Override
+                public void mouseClicked(MouseEvent e) {
+                    if (thread == null) {
+                        start();
+                    } else {
+                        stop();
+                    }
+                }
+            });
+        }
+
+        @Override
+        public Dimension getMinimumSize() {
+            return getPreferredSize();
+        }
+
+        @Override
+        public Dimension getMaximumSize() {
+            return getPreferredSize();
+        }
+
+        @Override
+        public Dimension getPreferredSize() {
+            int textH = getFontMetrics(font).getHeight();
+            return new Dimension(135, 2 + textH * 4);
+        }
+
+        @Override
+        public void paint(Graphics g) {
+            if (bimg != null) {
+                g.drawImage(bimg, 0, 0, this);
+            }
+        }
+
+        public void start() {
+            thread = new Thread(this);
+            thread.setPriority(Thread.MIN_PRIORITY);
+            thread.setName("PerformanceMonitor");
+            thread.start();
+        }
+
+        public synchronized void stop() {
+            thread = null;
+            setSurfaceState();
+            notify();
+        }
+
+        public void setSurfaceState() {
+            if (panel != null) {
+                for (Component comp : panel.getComponents()) {
+                    if (((DemoPanel) comp).surface != null) {
+                        ((DemoPanel) comp).surface.setMonitor(thread != null);
+                    }
+                }
+            }
+        }
+
+        public void setPanel(JPanel panel) {
+            this.panel = panel;
+        }
+
+        @Override
+        @SuppressWarnings("SleepWhileHoldingLock")
+        public void run() {
+
+            Thread me = Thread.currentThread();
+
+            while (thread == me && !isShowing() || getSize().width == 0) {
+                try {
+                    Thread.sleep(500);
+                } catch (InterruptedException e) {
+                    return;
+                }
+            }
+
+            Dimension d = new Dimension(0, 0);
+            Graphics2D big = null;
+            FontMetrics fm = null;
+            int ascent = 0;
+            int descent = 0;
+
+            while (thread == me && isShowing()) {
+
+                if (getWidth() != d.width || getHeight() != d.height) {
+                    d = getSize();
+                    bimg = (BufferedImage) createImage(d.width, d.height);
+                    big = bimg.createGraphics();
+                    big.setFont(font);
+                    fm = big.getFontMetrics();
+                    ascent = fm.getAscent();
+                    descent = fm.getDescent();
+                    setSurfaceState();
+                }
+
+                big.setBackground(getBackground());
+                big.clearRect(0, 0, d.width, d.height);
+                if (panel == null) {
+                    continue;
+                }
+                big.setColor(Color.green);
+                int ssH = 1;
+                for (Component comp : panel.getComponents()) {
+                    if (((DemoPanel) comp).surface != null) {
+                        String pStr = ((DemoPanel) comp).surface.perfStr;
+                        if (pStr != null) {
+                            ssH += ascent;
+                            big.drawString(pStr, 4, ssH + 1);
+                            ssH += descent;
+                        }
+                    }
+                }
+                repaint();
+
+                try {
+                    Thread.sleep(999);
+                } catch (InterruptedException e) {
+                    break;
+                }
+            }
+            thread = null;
+        }
+    } // End Surface
+} // End PeformanceMonitor
+