Java tutorial
/** * This file is distributed under the GPL * $Id: OperatingSystem.java 1869 2009-09-02 07:02:35Z scotta $ */ //package net.bnubot.util; import java.util.Properties; /** * @author scotta */ public enum OperatingSystem { WINDOWS, OSX, LINUX, UNKNOWN; private static OperatingSystem initOS() { String osName = System.getProperty("os.name"); if (osName.equals("Mac OS X")) return OSX; if (osName.startsWith("Windows ")) return WINDOWS; if (osName.startsWith("Linux")) return LINUX; return UNKNOWN; } public static final OperatingSystem userOS = initOS(); /** * @return user-displayable operating system version */ public static String osVersion() { Properties p = System.getProperties(); String osName = p.getProperty("os.name"); String osVersion = p.getProperty("os.version"); if ((osVersion != null) && (osVersion.length() != 0)) osName += " " + osVersion; switch (userOS) { case OSX: if (osVersion.startsWith("10.0")) osName += " Cheetah"; else if (osVersion.startsWith("10.1")) osName += " Puma"; else if (osVersion.startsWith("10.2")) osName += " Jaguar"; else if (osVersion.startsWith("10.3")) osName += " Panther"; else if (osVersion.startsWith("10.4")) osName += " Tiger"; else if (osVersion.startsWith("10.5")) osName += " Leopard"; else if (osVersion.startsWith("10.6")) osName += " Snow Leopard"; break; case WINDOWS: osName += " " + p.getProperty("sun.os.patch.level"); break; } osName += " (" + p.getProperty("os.arch") + ")"; return osName; } public static String javaVersion() { return "Java " + System.getProperties().getProperty("java.version"); } }