question 3

Consider the following code segment:

int n = (int)(Math.random() * 10) + 1; ArrayList a = new ArrayList(n);

Which of the following gives the index of the final element of a?

a.size()

11

10

a.length - 1

a.size() - 1

question 4

Which of the following is NOT true about ArrayList objects?

Methods for insertion and deletion are built into the class

ArrayList is class data type.

ArrayList can hold many data types at once.

They can be resized.

There is only one data type which can be held by an ArrayList