com.github.j3t.ssl.utils.EnvironmentHelper Maven / Gradle / Ivy

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Is a library of utilities to assist with developing security functionality in Java applications.

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package com.github.j3t.ssl.utils;


/**
 * Helper to identify the environment.
 *
 * @author j3t
 */
public class EnvironmentHelper {
    private static final String OS = createOperatingSystem();
    private static final double JAVA_VERSION = createJavaVersion();

    public static boolean isWindows() {
        return OS.contains("win");
    }

    public static boolean isMac() {
        return OS.contains("mac");
    }

    public static boolean isUnix() {
        return OS.contains("nix") || OS.contains("nux") || OS.contains("aix");
    }

    public static boolean isSolaris() {
        return OS.contains("sunos");
    }

    public static boolean isJava6() {
        return JAVA_VERSION == 1.6d;
    }

    public static boolean isJava6OrHigher() {
        return JAVA_VERSION >= 1.6d;
    }

    public static boolean isJava7() {
        return JAVA_VERSION == 1.7d;
    }

    public static boolean isJava7OrHigher() {
        return JAVA_VERSION >= 1.7d;
    }

    public static boolean isJava8() {
        return JAVA_VERSION == 1.8d;
    }

    public static boolean isJava8OrHigher() {
        return JAVA_VERSION >= 1.8d;
    }

    private static String createOperatingSystem() {
        String os = System.getProperty("os.name");

        if (os != null)
            return os.toLowerCase();

        return "";
    }

    private static double createJavaVersion() {
        try {
            return Double.parseDouble(System.getProperty("java.specification.version"));
        } catch (NumberFormatException e) {
            return 0d;
        }
    }
}