package singleton.pub;
public interface S {
	public static final S instance =
			("linux".equals(System.getProperty("os.name"))) ? new SLinux() : new SOther();
			public int inc();
}
final class SLinux implements S {
	private int i;
	public int inc() {return ++i;}
}
final class SOther implements S {
	private int i;
	public int inc() {return --i;}
}