--- old/src/java.corba/share/classes/com/sun/corba/se/impl/orbutil/StackImpl.java	2018-01-30 20:19:18.000000000 -0500
+++ /dev/null	2018-01-30 20:19:19.000000000 -0500
@@ -1,79 +0,0 @@
-/*
- * Copyright (c) 2001, 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 com.sun.corba.se.impl.orbutil ;
-
-import java.util.EmptyStackException ;
-
-// We implement a Stack here instead of using java.util.Stack because
-// java.util.Stack is thread-safe, negatively impacting performance.
-// We use an ArrayList instead since it is not thread-safe.
-// RequestInfoStack is used quite frequently.
-public class StackImpl {
-    // The stack for RequestInfo objects.
-    private Object[] data = new Object[3] ;
-    private int top = -1 ;
-
-    // Tests if this stack is empty.
-    public final boolean empty() {
-        return top == -1;
-    }
-
-    // Looks at the object at the top of this stack without removing it
-    // from the stack.
-    public final Object peek() {
-        if (empty())
-            throw new EmptyStackException();
-
-        return data[ top ];
-    }
-
-    // Removes the object at the top of this stack and returns that
-    // object as the value of this function.
-    public final Object pop() {
-        Object obj = peek() ;
-        data[top] = null ;
-        top-- ;
-        return obj;
-    }
-
-    private void ensure()
-    {
-        if (top == (data.length-1)) {
-            int newSize = 2*data.length ;
-            Object[] newData = new Object[ newSize ] ;
-            System.arraycopy( data, 0, newData, 0, data.length ) ;
-            data = newData ;
-        }
-    }
-
-    // Pushes an item onto the top of the stack
-    public final Object push( Object item ) {
-        ensure() ;
-        top++ ;
-        data[top] = item;
-        return item;
-    }
-}