code: ///////////////////////////////////////////////////////////////////////////
  //                   __                _      _   ________               //
  //                  / /   ____  ____ _(_)____/ | / / ____/               //
  //                 / /   / __ \/ __ `/ / ___/  |/ / / __                 //
  //                / /___/ /_/ / /_/ / / /__/ /|  / /_/ /                 //
  //               /_____/\____/\__, /_/\___/_/ |_/\____/                  //
  //                           /____/                                      //
  //                                                                       //
  //               The Next Generation Logic Library                       //
  //                                                                       //
  ///////////////////////////////////////////////////////////////////////////
  //                                                                       //
  //  Copyright 2015-20xx Christoph Zengler                                //
  //                                                                       //
  //  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.                       //
  //                                                                       //
  ///////////////////////////////////////////////////////////////////////////
  
  package org.logicng;
  
  import java.io.BufferedReader;
  import java.io.InputStreamReader;
  
  /**
   * A class which exposes the LogicNG library version as specified in the POM.
   * This works only if the compiled library as jar is included in your project.
   * @version 2.1.0
   * @since 2.0.0
   */
  public final class LogicNGVersion {
  
      /**
       * Private constructor.
       */
      private LogicNGVersion() {
          // Intentionally left empty.
      }
  
      /**
       * Returns the version string from the POM.
       * @return the version string from the POM
       */
      public static String version() {
          try {
              return new BufferedReader(new InputStreamReader(LogicNGVersion.class.getResourceAsStream("version.txt"))).readLine();
          } catch (final Exception e) {
              return "unknown";
          }
      }
  
      /**
       * Returns the major version or -1 if the version could not be parsed.
       * @return the major version
       */
      public static int major() {
          return major(version());
      }
  
      static int major(final String version) {
          try {
              return Integer.parseInt(version.split("\\.")[0]);
          } catch (final ArrayIndexOutOfBoundsException | NumberFormatException e) {
              return -1;
          }
      }
  
      /**
       * Returns the minor version or -1 if the version could not be parsed.
       * @return the minor version
       */
      public static int minor() {
          return minor(version());
      }
  
      static int minor(final String version) {
          try {
              return Integer.parseInt(version.split("\\.")[1]);
          } catch (final ArrayIndexOutOfBoundsException | NumberFormatException e) {
              return -1;
          }
      }
  
      /**
       * Returns the patch version or -1 if the version could not be parsed.
       * @return the patch version
       */
      public static int patch() {
          return patch(version());
      }
  
      static int patch(final String version) {
          try {
              return Integer.parseInt(version.split("\\.")[2].split("-")[0]);
          } catch (final ArrayIndexOutOfBoundsException | NumberFormatException e) {
              return -1;
          }
      }
  
      /**
       * Returns whether this is a snapshot version or not.
       * @return true if it is a snapshot version, false otherwise
       */
      public static boolean snapshot() {
          return snapshot(version());
      }
  
      static boolean snapshot(final String version) {
          return version.contains("-SNAPSHOT");
      }
  }
  