JAVA EnumSet

public class enumSet {

	enum ALPH {M,D,F,A,E,G,W,S};
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		EnumSet<ALPH> all = EnumSet.allOf(ALPH.class);
		EnumSet<ALPH> none = EnumSet.noneOf(ALPH.class);
		EnumSet<ALPH> range = EnumSet.range(ALPH.A, ALPH.G);
		EnumSet<ALPH> some = EnumSet.of(ALPH.D,ALPH.F);
		
		//System.out.println(all+"\n"+none+"\n"+range+"\n"+some);
		
		for(ALPH a : all){
			System.out.println(a);
		}
		
		if(all.contains(ALPH.A)){
			System.out.println("sure");
		}
	}

}