Consider the following instruction: Map javaStudents = new HashMap(); (a) Why is the type of this object given as Map and not HashMap? (b) Assuming the object javaStudents has been created as above,...

Consider the following instruction: Map javaStudents = new HashMap(); (a) Why is the type of this object given as Map and not HashMap? (b) Assuming the object javaStudents has been created as above, why would the following line cause a compiler error? javaStudents.put("u0012345", "Jeet");