The document describes three method definitions to determine if two ArrayList parameters containing Student objects are equal. Method I checks only if the sizes are equal, which is not sufficient. Method III uses the ArrayList equals method, which checks only if the lists reference the same object, not if the elements are equal. Method II iterates through both lists, checking if each element is equal using the Student equals method. It is the only method that will fully check if the lists are equal.

1. Consider the following method definitions intended to determine whether the two ArrayList
parameters are equal (have the same number of elements in the same order). Assume the equals
method
for Student works as intended.
I. public static boolean isTheSame(ArrayList<Student> A, ArrayList<Student> B)
{
if (A.size() != B.size())
return false;
return (A == B);
}
II. public static boolean isTheSame(ArrayList<Student> A, ArrayList<Student> B)
{
if (A.size() != B.size())
return false;
for (int i = 0; i < A.size(); i++)
{
if (!(A.get(i)).equals(B.get(i)))
{
return false;
}
}
return true;
}
III. public static boolean isTheSame(ArrayList<Student> A, ArrayList<Student> B)
{
if (A.size() != B.size())
return false;
return (A.equals(B));
}
Which of the method definitions above will work as intended?
a . I o n ly
b . I I o n l y
c . I and II only
d . II and III only
e . I, II, and III

2. Solution
Answer:)
e
All the functions check if both the list has the same size as well as each element in both the list
are same and in same order.