ICU-6824 Remove Lockable (old version of Freeze)

X-SVN-Rev: 26384

icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/Lockable.java

@@ -1,34 +0,0 @@
-/*
- ******************************************************************************
- * Copyright (C) 2005-2008, International Business Machines Corporation and   *
- * others. All Rights Reserved.                                               *
- ******************************************************************************
-*/
-package com.ibm.icu.dev.test.util;
-
-/**
- * Provides a flexible mechanism for controlling access, without requiring that a class be immutable.
- * Once locked, an object can never be unlocked, so it is thread-safe from that point onward.
- * The implementation of both methods must be synchronized.
- * Once the object has been locked, it must guarantee that no changes can be made to it.
- * Any attempt to alter it must raise an UnsupportedOperationException exception.
- * This means that when the object returns internal objects,
- * or if anyone has references to those internal objects, that those internal objects must either be immutable,
- * or must also raise exceptions if any attempt to modify them is made. Of course, the object can return clones
- * of internal objects, since those are safe. * @author davis
- */
-public interface Lockable extends Cloneable {
-    /**
-     * Determines whether the object has been locked or not.
-     */
-    public boolean isLocked();
-    /**
-     * Locks the object.
-     * @return the object itself.
-     */
-    public Object lock();
-    /**
-     * Provides for the clone operation. Any clone is initially unlocked.
-     */
-    public Object clone();
-}