diff -r 05224402145d -r d382dacfd73f rt/emul/mini/src/main/java/java/lang/IllegalArgumentException.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/emul/mini/src/main/java/java/lang/IllegalArgumentException.java	Tue Feb 26 16:54:16 2013 +0100
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 1994, 2003, 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;
+
+/**
+ * Thrown to indicate that a method has been passed an illegal or
+ * inappropriate argument.
+ *
+ * @author  unascribed
+ * @see     java.lang.Thread#setPriority(int)
+ * @since   JDK1.0
+ */
+public
+class IllegalArgumentException extends RuntimeException {
+    /**
+     * Constructs an <code>IllegalArgumentException</code> with no
+     * detail message.
+     */
+    public IllegalArgumentException() {
+        super();
+    }
+
+    /**
+     * Constructs an <code>IllegalArgumentException</code> with the
+     * specified detail message.
+     *
+     * @param   s   the detail message.
+     */
+    public IllegalArgumentException(String s) {
+        super(s);
+    }
+
+    /**
+     * Constructs a new exception with the specified detail message and
+     * cause.
+     *
+     * <p>Note that the detail message associated with <code>cause</code> is
+     * <i>not</i> automatically incorporated in this exception's detail
+     * message.
+     *
+     * @param  message the detail message (which is saved for later retrieval
+     *         by the {@link Throwable#getMessage()} method).
+     * @param  cause the cause (which is saved for later retrieval by the
+     *         {@link Throwable#getCause()} method).  (A <tt>null</tt> value
+     *         is permitted, and indicates that the cause is nonexistent or
+     *         unknown.)
+     * @since 1.5
+     */
+    public IllegalArgumentException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructs a new exception with the specified cause and a detail
+     * message of <tt>(cause==null ? null : cause.toString())</tt> (which
+     * typically contains the class and detail message of <tt>cause</tt>).
+     * This constructor is useful for exceptions that are little more than
+     * wrappers for other throwables (for example, {@link
+     * java.security.PrivilegedActionException}).
+     *
+     * @param  cause the cause (which is saved for later retrieval by the
+     *         {@link Throwable#getCause()} method).  (A <tt>null</tt> value is
+     *         permitted, and indicates that the cause is nonexistent or
+     *         unknown.)
+     * @since  1.5
+     */
+    public IllegalArgumentException(Throwable cause) {
+        super(cause);
+    }
+
+    private static final long serialVersionUID = -5365630128856068164L;
+}