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.api;
  
  import java.util.Objects;
  
  /**
   * Immutable line and column numbers.
   *
   */
  public class LineColumn implements Comparable<LineColumn> {
  
      /** The one-based line number. */
      private final int line;
  
      /** The zero-based column number. */
      private final int column;
  
      /**
       * Constructs a new pair of line and column numbers.
       *
       * @param line the one-based line number
       * @param column the zero-based column number
       */
      public LineColumn(int line, int column) {
          this.line = line;
          this.column = column;
      }
  
      /**
       * Gets the one-based line number.
       *
       * @return the one-based line number
       */
      public int getLine() {
          return line;
      }
  
      /**
       * Gets the zero-based column number.
       *
       * @return the zero-based column number
       */
      public int getColumn() {
          return column;
      }
  
      @Override
      public int compareTo(LineColumn lineColumn) {
          final int result;
          if (line == lineColumn.line) {
              result = Integer.compare(column, lineColumn.column);
          }
          else {
              result = Integer.compare(line, lineColumn.line);
          }
          return result;
      }
  
      @Override
      public boolean equals(Object other) {
          if (this == other) {
              return true;
          }
          if (other == null || getClass() != other.getClass()) {
              return false;
          }
          final LineColumn lineColumn = (LineColumn) other;
          return Objects.equals(line, lineColumn.line)
                  && Objects.equals(column, lineColumn.column);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(line, column);
      }
  
  }
  