diff -r 05224402145d -r d382dacfd73f rt/emul/mini/src/main/java/java/lang/Error.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/emul/mini/src/main/java/java/lang/Error.java	Tue Feb 26 16:54:16 2013 +0100
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 1995, 2011, 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;
+
+/**
+ * An {@code Error} is a subclass of {@code Throwable}
+ * that indicates serious problems that a reasonable application
+ * should not try to catch. Most such errors are abnormal conditions.
+ * The {@code ThreadDeath} error, though a "normal" condition,
+ * is also a subclass of {@code Error} because most applications
+ * should not try to catch it.
+ * <p>
+ * A method is not required to declare in its {@code throws}
+ * clause any subclasses of {@code Error} that might be thrown
+ * during the execution of the method but not caught, since these
+ * errors are abnormal conditions that should never occur.
+ *
+ * That is, {@code Error} and its subclasses are regarded as unchecked
+ * exceptions for the purposes of compile-time checking of exceptions.
+ *
+ * @author  Frank Yellin
+ * @see     java.lang.ThreadDeath
+ * @jls 11.2 Compile-Time Checking of Exceptions
+ * @since   JDK1.0
+ */
+public class Error extends Throwable {
+    static final long serialVersionUID = 4980196508277280342L;
+
+    /**
+     * Constructs a new error with {@code null} as its detail message.
+     * The cause is not initialized, and may subsequently be initialized by a
+     * call to {@link #initCause}.
+     */
+    public Error() {
+        super();
+    }
+
+    /**
+     * Constructs a new error with the specified detail message.  The
+     * cause is not initialized, and may subsequently be initialized by
+     * a call to {@link #initCause}.
+     *
+     * @param   message   the detail message. The detail message is saved for
+     *          later retrieval by the {@link #getMessage()} method.
+     */
+    public Error(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a new error with the specified detail message and
+     * cause.  <p>Note that the detail message associated with
+     * {@code cause} is <i>not</i> automatically incorporated in
+     * this error's detail message.
+     *
+     * @param  message the detail message (which is saved for later retrieval
+     *         by the {@link #getMessage()} method).
+     * @param  cause the cause (which is saved for later retrieval by the
+     *         {@link #getCause()} method).  (A {@code null} value is
+     *         permitted, and indicates that the cause is nonexistent or
+     *         unknown.)
+     * @since  1.4
+     */
+    public Error(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructs a new error with the specified cause and a detail
+     * message of {@code (cause==null ? null : cause.toString())} (which
+     * typically contains the class and detail message of {@code cause}).
+     * This constructor is useful for errors that are little more than
+     * wrappers for other throwables.
+     *
+     * @param  cause the cause (which is saved for later retrieval by the
+     *         {@link #getCause()} method).  (A {@code null} value is
+     *         permitted, and indicates that the cause is nonexistent or
+     *         unknown.)
+     * @since  1.4
+     */
+    public Error(Throwable cause) {
+        super(cause);
+    }
+
+    /**
+     * Constructs a new error with the specified detail message,
+     * cause, suppression enabled or disabled, and writable stack
+     * trace enabled or disabled.
+     *
+     * @param  message the detail message.
+     * @param cause the cause.  (A {@code null} value is permitted,
+     * and indicates that the cause is nonexistent or unknown.)
+     * @param enableSuppression whether or not suppression is enabled
+     *                          or disabled
+     * @param writableStackTrace whether or not the stack trace should
+     *                           be writable
+     *
+     * @since 1.7
+     */
+    protected Error(String message, Throwable cause,
+                    boolean enableSuppression,
+                    boolean writableStackTrace) {
+        super(message, cause, enableSuppression, writableStackTrace);
+    }
+}