import java.util.Enumeration;
import java.util.Hashtable;
class HTDemo {
public static void main(String args[]) {
Hashtable balance = new Hashtable();
Enumeration names;
String str;
double bal;
balance.put("A", 3434.34);
balance.put("B", 123.22);
balance.put("C", 1378.00);
balance.put("D", 99.22);
balance.put("E", -19.08);
names = balance.keys();
while (names.hasMoreElements()) {
str = names.nextElement();
System.out.println(str + ": " + balance.get(str));
}
bal = balance.get("A");
balance.put("A", bal + 1000);
System.out.println("A's new balance: " + balance.get("A"));
}
}