Practice Test
Name:_CIS121 vest______________________
Part 1: Fill in the blank (1 point each) with the best word to complete the thought.
1) The process of connecting one string to the end of another string is called
_____concatenation____________.
2) In object-oriented programming, a(n) ___composition(has a)_ relationship
indicates that a class object contains a reference to an object of another class.
Whereas, in a(n) ___inheritance (is a)___ relationship, an object of a subclass
type may also be treated as an object of the superclass type.
3) Three methods of the StringTokenizer class involving tokens are
_nextToken____________, ____countTokens____, and
___hasMoreTokens_______.
4) The method used to initialize an object at its creation is called a(n)
_____constructor_____.
5) AWT stands for __abstract window toolkit___________________.
6) A class for which programmers never intend to instantiate objects is a(n)
___abstract____________ class.
7) The wrapper class for char is _Character_____________.
8) The _StringBuffer__________ class has capacity, insert, delete, and length
methods.
9) Each __color/pixel__________ in a window has a RGB value which displays the
intensity of the _____red_______________, __green________________, and
_____blue______________ color elements.
10) The Container class and the JComponent class are both subclasses the
____Component_________ class.
11) Mouse clicks, button presses, and radio button selection are examples of user
generated ______events_________________ that a program listens for.
12) When we implement the interface ActionListener we are required to
__define______ a method called _actionPerformed_______________.
13) Every class inherits a ___toString____________ method from the Object class.
