diff -r d7a291b7808d -r 05224402145d emul/mini/src/main/java/java/io/IOException.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emul/mini/src/main/java/java/io/IOException.java	Wed Jan 23 20:39:23 2013 +0100
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 1994, 2006, 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.io;
+
+/**
+ * Signals that an I/O exception of some sort has occurred. This
+ * class is the general class of exceptions produced by failed or
+ * interrupted I/O operations.
+ *
+ * @author  unascribed
+ * @see     java.io.InputStream
+ * @see     java.io.OutputStream
+ * @since   JDK1.0
+ */
+public
+class IOException extends Exception {
+    static final long serialVersionUID = 7818375828146090155L;
+
+    /**
+     * Constructs an {@code IOException} with {@code null}
+     * as its error detail message.
+     */
+    public IOException() {
+        super();
+    }
+
+    /**
+     * Constructs an {@code IOException} with the specified detail message.
+     *
+     * @param message
+     *        The detail message (which is saved for later retrieval
+     *        by the {@link #getMessage()} method)
+     */
+    public IOException(String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs an {@code IOException} with the specified detail message
+     * and cause.
+     *
+     * <p> Note that the detail message associated with {@code cause} is
+     * <i>not</i> automatically incorporated into this exception'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 null value is permitted,
+     *        and indicates that the cause is nonexistent or unknown.)
+     *
+     * @since 1.6
+     */
+    public IOException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructs an {@code IOException} 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 IO exceptions 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 null value is permitted,
+     *        and indicates that the cause is nonexistent or unknown.)
+     *
+     * @since 1.6
+     */
+    public IOException(Throwable cause) {
+        super(cause);
+    }
+}