import java.util.*;

public class ExampleTreeMap {

	public static void main(String args[]) {
		TreeMap<String, Double> tm = new TreeMap<String, Double>();
		tm.put("Cilka", new Double(3434.34));
		tm.put("Julka", new Double(123.22));
		tm.put("Barbara", new Double(1378.00));
		tm.put("Ana", new Double(99.22));
		tm.put("Rezika", new Double(-19.08));		
		Set set = tm.entrySet();
		Iterator i = set.iterator();
		while(i.hasNext()) {
			Map.Entry me = (Map.Entry)i.next();
			System.out.print(me.getKey() + ": ");
			System.out.println(me.getValue());
		}
		System.out.println();
		double racun = ((Double)tm.get("Ana")).doubleValue();
		tm.put("Ana", new Double(racun + 1000));
		System.out.println("Ana ima na računu: " + tm.get("Ana"));
	}
}