Question 1(JAVA)

It is common for certain classes to keep track of how many times certain events have occurred over the life of an object. This is done using

A private instance variable within the class.

An array of objects.

A notification event to a helper class.

A local variable within a mutator method.

Question 2

What mechanism is used by a class that is designed to collect and store a growing set of values?

A local variable.

A string.

Auto-boxing.

An array list or array.

Question 3

When an object is intended to set and manage properties, where should those properties be stored?

An array as a local variable in a method.

Instance variables.

An off-site database.

The main method of the program.