java check if current operating system is linux or windows

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public class SystemUtils {

    public static void main(String[] args) {

        // if we run this util on Linux eg Ubuntu, Debian, CentOS
        System.out.println(isLinux()); // true
    }

    public static boolean isLinux() {
        String name = System.getProperty("os.name");
        return name.toLowerCase().contains("linux");
    }

    public static boolean isWindows() {
        String name = System.getProperty("os.name");
        return name.toLowerCase().contains("win");
    }
}