code: ///////////////////////////////////////////////////////////////////////////////////////////////
  // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
  // Copyright (C) 2001-2023 the original author or authors.
  //
  // This library is free software; you can redistribute it and/or
  // modify it under the terms of the GNU Lesser General Public
  // License as published by the Free Software Foundation; either
  // version 2.1 of the License, or (at your option) any later version.
  //
  // This library 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
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ///////////////////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.filters;
  
  /**
   * This filter element is immutable and accepts a matching Integer.
   */
  class IntMatchFilterElement implements IntFilterElement {
  
      /** The matching Integer. */
      private final int matchValue;
  
      /**
       * Constructs a MatchFilter for an int.
       *
       * @param matchValue the matching int.
       */
      /* package */ IntMatchFilterElement(int matchValue) {
          this.matchValue = matchValue;
      }
  
      @Override
      public boolean accept(int intValue) {
          return matchValue == intValue;
      }
  
      @Override
      public String toString() {
          return "IntMatchFilterElement[" + matchValue + "]";
      }
  
      @Override
      public final int hashCode() {
          return Integer.valueOf(matchValue).hashCode();
      }
  
      @Override
      public final boolean equals(Object object) {
          if (object instanceof IntMatchFilterElement) {
              final IntMatchFilterElement other = (IntMatchFilterElement) object;
              return matchValue == other.matchValue;
          }
          return false;
      }
  
  }
  