/**
 * A concrete observer
 * This observer, can not change subject, 
 * but it can print the content in vector sorted by alphameric
 */
import java.io.*;
import java.util.*;

public class ObserverB implements Observer {
 private Vector strVector;
 public ObserverB() {
 strVector = new Vector();
 }
 public void update(Subject subject) {
 strVector = (Vector)(subject.getState()).clone();
 //----- Sorted vector ---------------------------
 for (int i = strVector.size(); --i >= 0; ) {
 for (int j = 0; j < i; j++) {
 String str1 = (String)strVector.get(j);
 String str2 = (String)strVector.get(j+1);
 if((str1.compareTo(str2)) > 0) {
 strVector.setElementAt(str2, j);
 strVector.setElementAt(str1, j+1);
 }
 }
 }
 System.out.println("----- ObserverB will be updated -----");
 for(int i = 0; i < strVector.size(); i++) {
 System.out.println("Num " + i + " is :" + (String)strVector.get(i));
 }
 }
 
}