content: 
  /*
   * Licensed to the Apache Software Foundation (ASF) under one   *
   * or more contributor license agreements.  See the NOTICE file *
   * distributed with this work for additional information    *
   * regarding copyright ownership.  The ASF licenses this file   *
   * to you 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 io.aiven.kafka.utils;
  
  /**
   * This class was originally developed by the Apache RAT project
   * A formatter for Package information about a class.
   *
   * @see Package
   */
  public final class VersionInfo {
    /**
     * The version info string.
     */
    private final Package pkg;
  
    private String orDefault(final String value, final String defaultValue) {
      return value == null ? defaultValue : value;
    }
  
    /**
     * Constructor that uses the VersionInfo package for information.
     */
    public VersionInfo() {
      this(VersionInfo.class);
    }
  
    /**
     * Constructor for a specific class.
     *
     * @param clazz the class to get the Package information from.
     */
    public VersionInfo(final Class<?> clazz) {
      pkg = clazz.getPackage();
    }
  
    /**
     * Default string representation of the implementation information from the package.
     *
     * @return The string representation.
     */
    @Override
    public String toString() {
      return String.format("%s %s (%s)", getTitle(), getVersion(), getVendor());
    }
  
    /**
     * Gets the implementation version of the package. Will return "VERSION-NUMBER" if
     * package information is not available.
     *
     * @return the implementation version.
     */
    public String getVersion() {
      return orDefault(pkg.getImplementationVersion(), "VERSION-NUMBER");
    }
  
    /**
     * Gets the implementation vendor of the package. Will return "VENDOR-NAME" if
     * package information is not available.
     *
     * @return the implementation vendor
     */
    public String getVendor() {
      return orDefault(pkg.getImplementationVendor(), "VENDOR-NAME");
    }
  
    /**
     * Gets the implementation title of the package. Will return "TITLE" if
     * package information is not available.
     *
     * @return the implementation title
     */
    public String getTitle() {
      return orDefault(pkg.getImplementationTitle(), "TITLE");
    }
  
    /**
     * Gets the specification version of the package. Will return "SPEC-VERSION" if
     * package information is not available.
     *
     * @return the specification version.
     */
    public String getSpecVersion() {
      return orDefault(pkg.getSpecificationVersion(), "SPEC-VERSION");
    }
  
    /**
     * Gets the specification vendor of the package. Will return "SPEC-VENDOR" if
     * package information is not available.
     *
     * @return the specification vendor
     */
    public String getSpecVendor() {
      return orDefault(pkg.getSpecificationVendor(), "SPEC-VENDOR");
    }
  
    /**
     * Gets the specification title of the package. Will return "SPEC-TITLE" if
     * package information is not available.
     *
     * @return the specification title
     */
    public String getSpecTitle() {
      return orDefault(pkg.getSpecificationTitle(), "SPEC-TITLE");
    }
  
    public static void main(String[] args) {
      VersionInfo versionInfo = new VersionInfo();
      System.out.println(versionInfo);
      System.out.format("Spec: %s %s %s%n", versionInfo.getSpecTitle(), versionInfo.getSpecVersion(), versionInfo.getSpecVendor());
    }
  }