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diff --git a/src/demos/util/IntList.java b/src/demos/util/IntList.java
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+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution 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 Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package demos.util;
+
+/** Growable array of ints. */
+
+public class IntList {
+  private static final int DEFAULT_SIZE = 10;
+
+  private int[] data = new int[DEFAULT_SIZE];
+  private int numElements;
+
+  public void add(int f) {
+    if (numElements == data.length) {
+      resize(1 + numElements);
+    }
+    data[numElements++] = f;
+    assert numElements <= data.length;
+  }
+
+  public int size() {
+    return numElements;
+  }
+
+  public int get(int index) {
+    if (index >= numElements) {
+      throw new ArrayIndexOutOfBoundsException(index);
+    }
+    return data[index];
+  }
+
+  public void put(int index, int val) {
+    if (index >= numElements) {
+      throw new ArrayIndexOutOfBoundsException(index);
+    }
+    data[index] = val;
+  }
+
+  public void trim() {
+    if (data.length > numElements) {
+      int[] newData = new int[numElements];
+      System.arraycopy(data, 0, newData, 0, numElements);
+      data = newData;
+    }
+  }
+
+  public int[] getData() {
+    return data;
+  }
+
+  private void resize(int minCapacity) {
+    int newCapacity = 2 * data.length;
+    if (newCapacity == 0) {
+      newCapacity = DEFAULT_SIZE;
+    }
+    if (newCapacity < minCapacity) {
+      newCapacity = minCapacity;
+    }
+    int[] newData = new int[newCapacity];
+    System.arraycopy(data, 0, newData, 0, data.length);
+    data = newData;
+  }
+}