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diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/DeweyDecimal.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/DeweyDecimal.java
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+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/DeweyDecimal.java
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+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+package org.apache.tools.ant.util;
+
+import java.util.StringTokenizer;
+
+/**
+ * Utility class to contain version numbers in "Dewey Decimal"
+ * syntax.  Numbers in the "Dewey Decimal" syntax consist of positive
+ * decimal integers separated by periods ".".  For example, "2.0" or
+ * "1.2.3.4.5.6.7".  This allows an extensible number to be used to
+ * represent major, minor, micro, etc versions.  The version number
+ * must begin with a number.
+ *
+ */
+public class DeweyDecimal implements Comparable<DeweyDecimal> {
+
+    /** Array of components that make up DeweyDecimal */
+    private final int[] components;
+
+    /**
+     * Construct a DeweyDecimal from an array of integer components.
+     *
+     * @param components an array of integer components.
+     */
+    public DeweyDecimal(final int[] components) {
+        this.components = new int[components.length];
+        System.arraycopy(components, 0, this.components, 0, components.length);
+    }
+
+    /**
+     * Construct a DeweyDecimal from string in DeweyDecimal format.
+     *
+     * @param string the string in dewey decimal format
+     * @exception NumberFormatException if string is malformed
+     */
+    public DeweyDecimal(final String string)
+        throws NumberFormatException {
+        final StringTokenizer tokenizer = new StringTokenizer(string, ".", true);
+        final int size = tokenizer.countTokens();
+
+        components = new int[ (size + 1) / 2 ];
+
+        for (int i = 0; i < components.length; i++) {
+            final String component = tokenizer.nextToken();
+            if (component.length() == 0) {
+                throw new NumberFormatException("Empty component in string");
+            }
+
+            components[ i ] = Integer.parseInt(component);
+
+            //Strip '.' token
+            if (tokenizer.hasMoreTokens()) {
+                tokenizer.nextToken();
+
+                //If it ended in a dot, throw an exception
+                if (!tokenizer.hasMoreTokens()) {
+                    throw new NumberFormatException("DeweyDecimal ended in a '.'");
+                }
+            }
+        }
+    }
+
+    /**
+     * Return number of components in <code>DeweyDecimal</code>.
+     *
+     * @return the number of components in dewey decimal
+     */
+    public int getSize() {
+        return components.length;
+    }
+
+    /**
+     * Return the component at specified index.
+     *
+     * @param index the index of components
+     * @return the value of component at index
+     */
+    public int get(final int index) {
+        return components[ index ];
+    }
+
+    /**
+     * Return <code>true</code> if this <code>DeweyDecimal</code> is
+     * equal to the other <code>DeweyDecimal</code>.
+     *
+     * @param other the other DeweyDecimal
+     * @return true if equal to other DeweyDecimal, false otherwise
+     */
+    public boolean isEqual(final DeweyDecimal other) {
+        final int max = Math.max(other.components.length, components.length);
+
+        for (int i = 0; i < max; i++) {
+            final int component1 = (i < components.length) ? components[ i ] : 0;
+            final int component2 = (i < other.components.length) ? other.components[ i ] : 0;
+
+            if (component2 != component1) {
+                return false;
+            }
+        }
+
+        return true; // Exact match
+    }
+
+    /**
+     * Return <code>true</code> if this <code>DeweyDecimal</code> is
+     * less than the other <code>DeweyDecimal</code>.
+     *
+     * @param other the other DeweyDecimal
+     * @return true if less than other DeweyDecimal, false otherwise
+     */
+    public boolean isLessThan(final DeweyDecimal other) {
+        return !isGreaterThanOrEqual(other);
+    }
+
+    /**
+     * Return <code>true</code> if this <code>DeweyDecimal</code> is
+     * less than or equal to the other <code>DeweyDecimal</code>.
+     *
+     * @param other the other DeweyDecimal
+     * @return true if less than or equal to other DeweyDecimal, false otherwise
+     */
+    public boolean isLessThanOrEqual(final DeweyDecimal other) {
+        return !isGreaterThan(other);
+    }
+
+    /**
+     * Return <code>true</code> if this <code>DeweyDecimal</code> is
+     * greater than the other <code>DeweyDecimal</code>.
+     *
+     * @param other the other DeweyDecimal
+     * @return true if greater than other DeweyDecimal, false otherwise
+     */
+    public boolean isGreaterThan(final DeweyDecimal other) {
+        final int max = Math.max(other.components.length, components.length);
+
+        for (int i = 0; i < max; i++) {
+            final int component1 = (i < components.length) ? components[ i ] : 0;
+            final int component2 = (i < other.components.length) ? other.components[ i ] : 0;
+
+            if (component2 > component1) {
+                return false;
+            }
+            if (component2 < component1) {
+                return true;
+            }
+        }
+
+        return false; // Exact match
+    }
+
+    /**
+     * Return <code>true</code> if this <code>DeweyDecimal</code> is
+     * greater than or equal to the other <code>DeweyDecimal</code>.
+     *
+     * @param other the other DeweyDecimal
+     * @return true if greater than or equal to other DeweyDecimal, false otherwise
+     */
+    public boolean isGreaterThanOrEqual(final DeweyDecimal other) {
+        final int max = Math.max(other.components.length, components.length);
+
+        for (int i = 0; i < max; i++) {
+            final int component1 = (i < components.length) ? components[ i ] : 0;
+            final int component2 = (i < other.components.length) ? other.components[ i ] : 0;
+
+            if (component2 > component1) {
+                return false;
+            }
+            if (component2 < component1) {
+                return true;
+            }
+        }
+
+        return true; // Exact match
+    }
+
+    /**
+     * Return string representation of <code>DeweyDecimal</code>.
+     *
+     * @return the string representation of DeweyDecimal.
+     */
+    @Override public String toString() {
+        final StringBuffer sb = new StringBuffer();
+
+        for (int i = 0; i < components.length; i++) {
+            if (i != 0) {
+                sb.append('.');
+            }
+            sb.append(components[ i ]);
+        }
+
+        return sb.toString();
+    }
+
+    /**
+     * Compares this DeweyDecimal with another one.
+     *
+     * @param other another DeweyDecimal to compare with
+     * @return result
+     * @see java.lang.Comparable#compareTo(Object)
+     */
+    public int compareTo(DeweyDecimal other) {
+        final int max = Math.max(other.components.length, components.length);
+        for (int i = 0; i < max; i++) {
+            final int component1 = (i < components.length) ? components[ i ] : 0;
+            final int component2 = (i < other.components.length) ? other.components[ i ] : 0;
+            if (component1 != component2) {
+                return component1 - component2;
+            }
+        }
+        return 0;
+    }
+
+    @Override public int hashCode() {
+        return toString().hashCode();
+    }
+
+    @Override public boolean equals(Object o) {
+        return o instanceof DeweyDecimal && isEqual((DeweyDecimal) o);
+    }
+
+}