What is the output of the following code segment? Map<Integer, String>m = new Tr

Question

What is the output of the following code segment?       Map<Integer, String>m = new TreeMap<Integer,String>();       m.put(1,"Amy");       m.put(4,"Ann");       m.put(new Integer(3),"Emy");       m.put(2,"Sue");       m.put(new Integer(8),"Lea"); 19. System.out.println(m.get(1)); 20. System.out.println(m.get(3));          for(int i :m.keySet()) 21.      System.out.print(m.get(i) +" "); 22. System.out.println(m.remove(2));   19.________ 20.________ 21.________ 22.________     What is the output of the following code segment?       Map<Integer, String>m = new TreeMap<Integer,String>();       m.put(1,"Amy");       m.put(4,"Ann");       m.put(new Integer(3),"Emy");       m.put(2,"Sue");       m.put(new Integer(8),"Lea"); 19. System.out.println(m.get(1)); 20. System.out.println(m.get(3));          for(int i :m.keySet()) 21.      System.out.print(m.get(i) +" "); 22. System.out.println(m.remove(2));   19.________ 20.________ 21.________ 22.________    

Explanation / Answer

TreeMap - stores objects in a Map, where any subcollection oriterator obtained will be sorted by the key values

          theMap object stores by key; since a TreeMap is used, its iteratorreturns the elements sorted in order by the keys

    Map<Integer, String> m = newTreeMap<Integer,String>();

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