solr/solrj/src/java/org/apache/solr/client/solrj/util/Constants.java

/*
 * 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 org.apache.solr.client.solrj.util;

import java.util.StringTokenizer;

// Clone of org.apache.lucene.util.Constants, so SolrJ can use it
public class Constants {
  public static final String JVM_SPEC_VERSION = System.getProperty("java.specification.version");
  private static final int JVM_MAJOR_VERSION;
  private static final int JVM_MINOR_VERSION;

  static {
    final StringTokenizer st = new StringTokenizer(JVM_SPEC_VERSION, ".");
    JVM_MAJOR_VERSION = Integer.parseInt(st.nextToken());
    if (st.hasMoreTokens()) {
      JVM_MINOR_VERSION = Integer.parseInt(st.nextToken());
    } else {
      JVM_MINOR_VERSION = 0;
    }
  }

  public static final boolean JRE_IS_MINIMUM_JAVA9 = JVM_MAJOR_VERSION > 1 || (JVM_MAJOR_VERSION == 1 && JVM_MINOR_VERSION >= 9);
  public static final boolean JRE_IS_MINIMUM_JAVA11 = JVM_MAJOR_VERSION > 1 || (JVM_MAJOR_VERSION == 1 && JVM_MINOR_VERSION >= 11);

}