Copro2 Final Exam
50 items
- 1.
To run a Java ____, you must use either a Web browser or an applet viewer.
- A.
Program
- B.
Application
- C.
Applet
- D.
Method
Correct Answer
C. Applet -
- 2.
Consider the following program. public class HelloWorld { public static void main(String[] args) { System.out.print("Hello World ") } } The missing semicolon in the code above will be caught by the ____.
- A.
Compiler
- B.
assembler
- C.
Editor
- D.
Run
Correct Answer
A. Compiler -
- 3.
Which of the following is a reserved word in Java?
- A.
Char
- B.
CHAR
- C.
Char
- D.
None of these
Correct Answer
A. Char -
- 4.
Which package is automatically imported by the Java system?
- A.
Java.io
- B.
Java.util
- C.
Java.lang
- D.
Java.applet
Correct Answer
C. Java.lang -
- 5.
It represents or models things in the real world.
- A.
Object
- B.
Class
- C.
Entity
- D.
All of the choices
Correct Answer
A. Object -
- 6.
It is an event, usually some form of error which happens during the normal course of program execution.
- A.
Exception Handling
- B.
Error
- C.
Exception
- D.
Error Handling
Correct Answer
C. Exception -
- 7.
It is a classification of objects which can’t be touched but do exist.
- A.
Tangible objects
- B.
Physical
- C.
Conceptual
- D.
Logical
Correct Answer
C. Conceptual -
- 8.
Which of the following statements describe the key aspects about the syntax of the try-catch-finally blocks? I. The block notation is mandatory. II. For each try block, there can be one or more catch blocks, but at most only one finally block. III. A try block must be followed by atleast one catch block or one finally block. IV. Each catch block can define one or more exception handle. V. The exception must be of the Throwable class or one of its subclasses.
- A.
I, III and IV only
- B.
II, III and V only
- C.
I, II, III and V only
- D.
All of the choices
Correct Answer
C. I, II, III and V only -
- 9.
It refers to the hiding of attributes and methods within an object.
- A.
Information Hiding
- B.
Encapsulation
- C.
Abstraction
- D.
Inheritance
Correct Answer
B. Encapsulation -
- 10.
Which of the following are NOT an example of a Physical object?I. Person II. Course III. Teacher IV. Department V. Professor
- A.
I, II and V
- B.
I, III and V only
- C.
II, III and IV only
- D.
II and IV only
Correct Answer
D. II and IV only -
- 11.
This method of Graphics object is useful for drawing pie-shaped pieces of a circle or oval.
- A.
DrawOval( )
- B.
FillArc( )
- C.
DrawRoundRect( )
- D.
DrawCircle( )
Correct Answer
B. FillArc( ) -
- 12.
Which of the following is the method of ActionListener interface?
- A.
Public void actionPerformed(ActionEvent e)
- B.
Public void actionPerformed( )
- C.
ActionPerformed(ActionEvent e)
- D.
Public static void actionPerformed( )
Correct Answer
B. Public void actionPerformed( ) -
- 13.
It is the keyword in Java used for instance methods or constructor to refer to the object on which thecurrently executing method has been invoked.
- A.
Super
- B.
This
- C.
Static
- D.
Void
Correct Answer
B. This -
- 14.
Which of the following is NOT a method of MouseListener interface?
- A.
MouseMoved()
- B.
MouseClicked()
- C.
MousePressed()
- D.
MouseReleased()
Correct Answer
A. MouseMoved() -
- 15.
It is a layout manager which divides a rectangular screen area into five regions.
- A.
GridBagLayout
- B.
BoxLayout
- C.
GridLayout
- D.
BorderLayout
Correct Answer
D. BorderLayout -
- 16.
It is the keyword used for implementing an interface.
- A.
Extends
- B.
Implements
- C.
Throws
- D.
Import
Correct Answer
B. Implements -
- 17.
It is an access modifier that specifies that class members are accessible to anyone, both inside outside of the class.
- A.
Public
- B.
Protected
- C.
Private
- D.
Default
Correct Answer
A. Public -
- 18.
It is the process by which an operating system allocates processor time to each running thread.
- A.
Thread priority
- B.
Thread synchronization
- C.
Thread scheduling
- D.
Thread time slicing
Correct Answer
C. Thread scheduling -
- 19.
It is a type of method that is used to write or change the value of a member field.
- A.
Static method
- B.
Accessor method
- C.
Mutator method
- D.
Final method
Correct Answer
C. Mutator method -
- 20.
Which of the following is the correct signature of method drawString()?
- A.
DrawString()
- B.
DrawString(String str, int x, int y)
- C.
DrawString(int x, Sting str, int y)
- D.
DrawString(int x, int y, String str)
Correct Answer
B. DrawString(String str, int x, int y) -
- 21.
Which of the following will generate an error:
- A.
A drawRect method with 4 parameters.
- B.
A fillArc method with 6 parameters.
- C.
A fillRoundRect method with 4 parameters
- D.
A fillRect method with 4 parameters
Correct Answer
C. A fillRoundRect method with 4 parameters -
- 22.
A window that is moved or covered is __________.
- A.
Destructed
- B.
Destroyed
- C.
Damaged
- D.
Overlapped
Correct Answer
C. Damaged -
- 23.
The distance values for drawRect are ________.
- A.
Measured in pixels
- B.
Measured in inches
- C.
In decimal places
- D.
In float type
Correct Answer
A. Measured in pixels -
- 24.
To change the color for your drawings, you have to use ______ method.
- A.
GetColor
- B.
SetColor
- C.
DrawColor
- D.
FillColor
Correct Answer
B. SetColor -
- 25.
Which of the following is NOT a subclass of class Component
- A.
TextField
- B.
Button
- C.
Choice
- D.
Label
Correct Answer
A. TextField -
- 26.
It prepares your applet to accept event messages.
- A.
Event programming
- B.
Event-driven programming
- C.
Java applet programming
- D.
Java application
Correct Answer
B. Event-driven programming -
- 27.
You can provide animations in java by combining different methods of drawing and using _______
- A.
SetColor
- B.
Conditional statements
- C.
ActionListener
- D.
Loop
Correct Answer
D. Loop -
- 28.
It is an interface class that aligns your components so that they neither crowd each other nor overlap
- A.
Layout
- B.
Flow layout
- C.
Layout managers
- D.
Java layout
Correct Answer
C. Layout managers -
- 29.
which of the following is NOT a type of layout:
- A.
FlowLayout
- B.
GridLayout
- C.
GridBagLayout
- D.
BagLayout
Correct Answer
D. BagLayout -
- 30.
The GridLayout constructor takes 4 arguments and these are
- A.
Left, right, top, bottom
- B.
Top, right, bottom, left
- C.
Cols, rows, ver, hor
- D.
Rows, cols, hor, ver
Correct Answer
D. Rows, cols, hor, ver -
- 31.
A communication from the outside world to the program that something has occurred
- A.
Event handling
- B.
Event
- C.
Action event
- D.
Action performed
Correct Answer
B. Event -
- 32.
This method means that the mouse leaves the component area.
- A.
MouseOut
- B.
MouseAway
- C.
MouseExited
- D.
MouseLeaved
Correct Answer
C. MouseExited -
- 33.
What is another name for a base class?
- A.
Superclass
- B.
Derived class
- C.
Child class
- D.
Hierarchy class
Correct Answer
A. Superclass -
- 34.
It is a method used by the Thread object to pause for a specified number of milliseconds.
- A.
Sleep(int)
- B.
Wait(int)
- C.
Run()
- D.
Stop()
Correct Answer
A. Sleep(int) -
- 35.
These are serious errors in the Java runtime system
- A.
Error
- B.
Exception
- C.
Runtime Exception
- D.
User Exception
Correct Answer
A. Error -
- 36.
Threads with the same priority are called _________.
- A.
Sequence
- B.
Thread
- C.
Monitor
- D.
Peers
Correct Answer
D. Peers -
- 37.
Which of the following is the correct declaration of drawing a rectangle method?
- A.
G.Drawrect();
- B.
G.drawRect();
- C.
G.drawingRect();
- D.
G.draw_RECT();
Correct Answer
B. G.drawRect(); -
- 38.
Which of the following statements is true?
- A.
Errors are more serious than Exceptions
- B.
Exceptions are more serious than Errors
- C.
Errors and Exceptions are equally serious
- D.
Exceptions and errors are same thing
Correct Answer
A. Errors are more serious than Exceptions -
- 39.
The file method canWrite returns a _________value.
- A.
Integer
- B.
Boolean
- C.
Object
- D.
Void
Correct Answer
B. Boolean -
- 40.
When you perform an input operation in a java program, you use a ___________.
- A.
Pipeline
- B.
Channel
- C.
Moderator
- D.
Stream
Correct Answer
D. Stream -
- 41.
The _________class “knows” how to change colors and draw things on the screen.
- A.
Paint
- B.
Color
- C.
Draw
- D.
Graphics
Correct Answer
D. Graphics -
- 42.
What type of exception will you use if your program attempt to divide a value to zero?
- A.
NullPointerExcption
- B.
ArithmeticException
- C.
ArrayIndexOutOfBounds
- D.
D. IOExcption
Correct Answer
B. ArithmeticException -
- 43.
What type of exception will you use if you are trying to access a non-existing index?
- A.
NullPointerException
- B.
StringIndexOutOfBoundsException
- C.
ArrayIndexOutOfBoundsException
- D.
IOException
Correct Answer
C. ArrayIndexOutOfBoundsException -
- 44.
The following are the different constructors that can be used to create File object except?
- A.
A. File(String directoryPath)
- B.
B. File(String directoryPath, String filename)
- C.
C. File(File dirPath, String filename)
- D.
D. File(File dirObj, String filename)
Correct Answer
C. C. File(File dirPath, String filename) -
- 45.
The character streams are used to transfer _______ of characters.
- A.
8 bits
- B.
8 bytes
- C.
16 bits
- D.
32 bytes
Correct Answer
C. 16 bits -
- 46.
____ are pieces of information that are sent into, or passed to, a method, usually because the method requires the information to perform its task or carry out its purpose.
- A.
Applets
- B.
Arguments
- C.
Methods
- D.
Objects
Correct Answer
B. Arguments -
- 47.
A state of a thread that might be blocked, waiting indefinitely, or waiting for a specified time
- A.
Inactive
- B.
Interrupted
- C.
Wait
- D.
New
Correct Answer
A. Inactive -
- 48.
It acts as a gatekeeper, ensuring that only one thread at a time has access to data.
- A.
Blocker
- B.
Controller
- C.
Monitor
- D.
Synchronize
Correct Answer
C. Monitor -
- 49.
Labels and Buttons are __________.
- A.
Components
- B.
Containers
- C.
Applets
- D.
Constituents
Correct Answer
A. Components -
- 50.
A program that allows you to display HTML documents on your computer screen is a ____________.
- A.
Search engine
- B.
Compiler
- C.
Browser
- D.
Server
Correct Answer
C. Browser -
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Jul 30, 2011Quiz Edited by
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Mar 27, 2011Quiz Created by
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