com.google.gson.util.VersionUtils Maven / Gradle / Ivy
/*
* Copyright (C) 2017 The Gson authors
*
* 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 com.google.gson.util;
/**
* Utility to check the major Java version of the current JVM.
*/
public class VersionUtils {
private static final int majorJavaVersion = determineMajorJavaVersion();
private static int determineMajorJavaVersion() {
String[] parts = System.getProperty("java.version").split("[._]");
int firstVer = Integer.parseInt(parts[0]);
if (firstVer == 1 && parts.length > 1) {
return Integer.parseInt(parts[1]);
} else {
return firstVer;
}
}
/**
* @return the major Java version, i.e. '8' for Java 1.8, '9' for Java 9 etc.
*/
public static int getMajorJavaVersion() {
return majorJavaVersion;
}
/**
* @return {@code true} if the application is running on Java 9 or later; and {@code false} otherwise.
*/
public static boolean isJava9OrLater() {
return majorJavaVersion >= 9;
}
}