What is the output of this program?import java.util.*; public class Map_Example { public static void main(String args[]) { HashMap object = new HashMap(); object.put("D", new Integer(4)); object.put("E", new Integer(5)); object.put("F", new Integer(6)); System.out.println(object.keySet()); } }

What is the output of this program?import java.util.*; public class Ma

1.	What is the output of this program? import java.util.*; public class Map_Example { public static void main(String args[]) { HashMap object = new HashMap(); object.put("D", new Integer(4)); object.put("E", new Integer(5)); object.put("F", new Integer(6)); System.out.println(object.keySet()); } }
A.	{D=4, E=5, F=6}
B.	[D, E, F]
C.	[D, E, F] 3
D.	[D=4, E=5, F=6]
E.	None of these
Answer» C. [D, E, F] 3

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What is the output of below snippet? <pre class="prettyprint lang-c">import java.util.*; public class Map_Example { public static void main(String[] args) { Map<integer object> mapSample = new TreeMap<integer object>(); mapSample.put(4, null); mapSample.put(0, null); mapSample.put(3, null); mapSample.put(2, null); mapSample.put(1, null); System.out.println(mapSample); } } </integer></integer></pre>
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What is the output of this program?import java.util.*; public class Map_Example { public static void main(String args[]) { HashMap object = new HashMap(); object.put("D", new Integer(4)); object.put("E", new Integer(5)); object.put("F", new Integer(6)); System.out.println(object.keySet()); } }

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What is the output of this program?
import java.util.*;
public class Map_Example
{
public static void main(String args[])
{
HashMap object = new HashMap();
object.put("D", new Integer(4));
object.put("E", new Integer(5));
object.put("F", new Integer(6));
System.out.println(object.keySet());
}
}