code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC 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 org.openqa.selenium;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.net.URL;
  import java.util.Properties;
  
  /** Reads information about how the current application was built. */
  public class BuildInfo {
  
    private static final Properties BUILD_PROPERTIES = loadBuildProperties();
  
    private static Properties loadBuildProperties() {
      Properties properties = new Properties();
  
      URL resource = BuildInfo.class.getResource("/META-INF/selenium-build.properties");
      try (InputStream is = resource.openStream()) {
        properties.load(is);
      } catch (IOException | NullPointerException ignored) {
        // Do nothing
      }
  
      return properties;
    }
  
    /**
     * @return The embedded release label or "unknown".
     */
    public String getReleaseLabel() {
      return read("Selenium-Version");
    }
  
    /**
     * @return The embedded build revision or "unknown".
     */
    public String getBuildRevision() {
      return read("Build-Revision");
    }
  
    @Override
    public String toString() {
      return String.format(
          "Build info: version: '%s', revision: '%s'", getReleaseLabel(), getBuildRevision());
    }
  
    private String read(String propertyName) {
      String value = BUILD_PROPERTIES.getProperty(propertyName);
      if (value == null || value.trim().isEmpty()) {
        return "unknown";
      }
      return value.trim();
    }
  }
  