import java.util.Map;
import java.util.TreeMap;
public class Freq {
private static final Integer ONE = new Integer(1);
public static void main(String args[]) {
Map m = new TreeMap();
m.put("a Key", "a Value");
m.put("rntsoft", "www.rntsoft.com");
System.out.println(m.size() + " keys detected:");
System.out.println(m);
}
}