/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * $Id: CharKey.java,v 1.4 2004/02/17 04:21:14 minchau Exp $
 */
package com.sun.org.apache.xml.internal.utils;

/**
 * Simple class for fast lookup of char values, when used with
 * hashtables.  You can set the char, then use it as a key.
 * @xsl.usage internal
 */
public class CharKey extends Object
{

  /** String value          */
  private char m_char;

  /**
   * Constructor CharKey
   *
   * @param key char value of this object.
   */
  public CharKey(char key)
  {
    m_char = key;
  }
  
  /**
   * Default constructor for a CharKey.
   *
   * @param key char value of this object.
   */
  public CharKey()
  {
  }
  
  /**
   * Get the hash value of the character.  
   *
   * @return hash value of the character.
   */
  public final void setChar(char c)
  {
    m_char = c;
  }



  /**
   * Get the hash value of the character.  
   *
   * @return hash value of the character.
   */
  public final int hashCode()
  {
    return (int)m_char;
  }

  /**
   * Override of equals() for this object 
   *
   * @param obj to compare to
   *
   * @return True if this object equals this string value 
   */
  public final boolean equals(Object obj)
  {
    return ((CharKey)obj).m_char == m_char;
  }
}