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import java.util.*;
class Maps
{
public static void main(String args[])
{
HashMap obj = new HashMap();
obj.put("A", new Integer(1));
obj.put("B", new Integer(2));
obj.put("C", new Integer(3));
System.out.println(obj.get("B"));
}
}
a) 1
b) 2
c) 3
d) null
b
Explanation: obj.get(“B”) method is used to obtain the value associated with key “B”, which is 2.
Output:
$ javac Maps.java
$ java Maps
2