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diff --git a/libjava/java/security/AccessControlContext.java b/libjava/java/security/AccessControlContext.java
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+/* AccessControlContext.java --- Access Control Context Class
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+package java.security;
+
+/**
+   AccessControlContext makes system resource access decsion 
+   based on permission rights.  
+
+   It is used for a specific context and has only one method
+   checkPermission. It is similar to AccessController except
+   that it makes decsions based on the current context instead
+   of the the current thread.
+
+   It is created by call AccessController.getContext method.
+
+   @author Mark Benvenuto
+   @since JDK 1.2
+ */
+public final class AccessControlContext
+{
+  private ProtectionDomain protectionDomain[];
+  private DomainCombiner combiner;
+
+  /**
+     Construct a new AccessControlContext with the specified
+     ProtectionDomains. <code>context</code> must not be 
+     null and duplicates will be removed.
+
+     @param context The ProtectionDomains to use
+   */
+  public AccessControlContext(ProtectionDomain[]context)
+  {
+    int i, j, k, count = context.length, count2 = 0;
+    for (i = 0, j = 0; i < count; i++)
+      {
+	for (k = 0; k < i; k++)
+	  if (context[k] == protectionDomain[i])
+	    break;
+	if (k != i)		//it means previous loop did not complete
+	  continue;
+
+	count2++;
+      }
+
+    protectionDomain = new ProtectionDomain[count2];
+    for (i = 0, j = 0; i < count2; i++)
+      {
+	for (k = 0; k < i; k++)
+	  if (context[k] == protectionDomain[i])
+	    break;
+	if (k != i)		//it means previous loop did not complete
+	  continue;
+
+	protectionDomain[j++] = context[i];
+      }
+  }
+
+  /**
+     Construct a new AccessControlContext with the specified
+     ProtectionDomains and DomainCombiner
+
+     @param context The ProtectionDomains to use
+
+     @since JDK 1.3
+   */
+  public AccessControlContext(AccessControlContext acc,
+			      DomainCombiner combiner)
+  {
+    this(acc.protectionDomain);
+    this.combiner = combiner;
+  }
+
+  /**
+     Returns the Domain Combiner associated with the AccessControlContext
+
+     @returns the DomainCombiner
+   */
+  public DomainCombiner getDomainCombiner()
+  {
+    return combiner;
+  }
+
+  /**
+     Determines whether or not the specific permission is granted
+     depending on the context it is within. 
+
+     @param perm a permission to check
+
+     @throws AccessControlException if the permssion is not permitted
+   */
+  public void checkPermission(Permission perm) throws AccessControlException
+  {
+    for (int i = 0; i < protectionDomain.length; i++)
+      if (protectionDomain[i].implies(perm) == true)
+	return;
+
+    throw new AccessControlException("Permission not granted");
+  }
+
+  /**
+     Checks if two AccessControlContexts are equal.
+
+     It first checks if obj is an AccessControlContext class, and
+     then checks if each ProtectionDomain matches.
+
+     @param obj The object to compare this class to
+
+     @return true if equal, false otherwise
+   */
+  public boolean equals(Object obj)
+  {
+    if (obj instanceof AccessControlContext)
+      {
+	AccessControlContext acc = (AccessControlContext) obj;
+
+	if (acc.protectionDomain.length != protectionDomain.length)
+	  return false;
+
+	for (int i = 0; i < protectionDomain.length; i++)
+	  if (acc.protectionDomain[i] != protectionDomain[i])
+	    return false;
+	return true;
+      }
+    return false;
+  }
+
+  /**
+     Computes a hash code of this class
+
+     @return a hash code representing this class
+   */
+  public int hashCode()
+  {
+    int h = 0;
+    for (int i = 0; i < protectionDomain.length; i++)
+      h ^= protectionDomain[i].hashCode();
+
+    return h;
+  }
+}