在Java中查找OSX的版本

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class OSXVersion {
    public static void main(String[] args) {
        String osName = System.getProperty("os.name");
        String osVersion = System.getProperty("os.version");

        if (osName.startsWith("Mac OS X")) {
            Pattern pattern = Pattern.compile("(\\d+\\.)(\\d+\\.)?(\\d+)?");
            Matcher matcher = pattern.matcher(osVersion);

            if (matcher.find()) {
                String majorVersion = matcher.group(1);
                String minorVersion = matcher.group(2);
                String patchVersion = matcher.group(3);

                System.out.println("OSX Version: " + majorVersion + "." + minorVersion + "." + patchVersion);
            } else {
                System.out.println("Unable to determine OSX version");
            }
        } else {
            System.out.println("This program only works on OSX");
        }
    }
}