diff -r 000000000000 -r 0a115f1c6f3c emul/src/main/java/java/lang/Number.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emul/src/main/java/java/lang/Number.java	Fri Sep 28 17:59:03 2012 +0200
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 1994, 2001, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.lang;
+
+/**
+ * The abstract class <code>Number</code> is the superclass of classes
+ * <code>BigDecimal</code>, <code>BigInteger</code>,
+ * <code>Byte</code>, <code>Double</code>, <code>Float</code>,
+ * <code>Integer</code>, <code>Long</code>, and <code>Short</code>.
+ * <p>
+ * Subclasses of <code>Number</code> must provide methods to convert
+ * the represented numeric value to <code>byte</code>, <code>double</code>,
+ * <code>float</code>, <code>int</code>, <code>long</code>, and
+ * <code>short</code>.
+ *
+ * @author      Lee Boynton
+ * @author      Arthur van Hoff
+ * @see     java.lang.Byte
+ * @see     java.lang.Double
+ * @see     java.lang.Float
+ * @see     java.lang.Integer
+ * @see     java.lang.Long
+ * @see     java.lang.Short
+ * @since   JDK1.0
+ */
+public abstract class Number implements java.io.Serializable {
+    /**
+     * Returns the value of the specified number as an <code>int</code>.
+     * This may involve rounding or truncation.
+     *
+     * @return  the numeric value represented by this object after conversion
+     *          to type <code>int</code>.
+     */
+    public abstract int intValue();
+
+    /**
+     * Returns the value of the specified number as a <code>long</code>.
+     * This may involve rounding or truncation.
+     *
+     * @return  the numeric value represented by this object after conversion
+     *          to type <code>long</code>.
+     */
+    public abstract long longValue();
+
+    /**
+     * Returns the value of the specified number as a <code>float</code>.
+     * This may involve rounding.
+     *
+     * @return  the numeric value represented by this object after conversion
+     *          to type <code>float</code>.
+     */
+    public abstract float floatValue();
+
+    /**
+     * Returns the value of the specified number as a <code>double</code>.
+     * This may involve rounding.
+     *
+     * @return  the numeric value represented by this object after conversion
+     *          to type <code>double</code>.
+     */
+    public abstract double doubleValue();
+
+    /**
+     * Returns the value of the specified number as a <code>byte</code>.
+     * This may involve rounding or truncation.
+     *
+     * @return  the numeric value represented by this object after conversion
+     *          to type <code>byte</code>.
+     * @since   JDK1.1
+     */
+    public byte byteValue() {
+        return (byte)intValue();
+    }
+
+    /**
+     * Returns the value of the specified number as a <code>short</code>.
+     * This may involve rounding or truncation.
+     *
+     * @return  the numeric value represented by this object after conversion
+     *          to type <code>short</code>.
+     * @since   JDK1.1
+     */
+    public short shortValue() {
+        return (short)intValue();
+    }
+
+    /** use serialVersionUID from JDK 1.0.2 for interoperability */
+    private static final long serialVersionUID = -8742448824652078965L;
+}