CIS 234 Final Study Guide (All Quizzes #1-4 Q's)

A common extension for plain text files is:

.txt

Which of the following is a symbol for a single line comment in Java?

//

AWT stands for which of the following:

Abstract Windows Toolkit

What is the name of the class that contains the following code: public Clock (Date date, Mode mode) { }

Clock

Attempting to write a file that does not exist will:

Create the file

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } What type of argument(s) are provided?

Date

Which class is used to connect a buffered reader to a file?

FileReader

Which object is used to write text to a text file?

FileWriter

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } What value is returned when hour is 12?

Good afternoon

Which of the following exceptions is likely to be thrown when reading a file?

IOException

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } What type of method is shown?

Instance

Which is NOT a basic control structure?

Modification

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } Which of the following represent constants?

None

The priority among the following operators, from first to last, is:

Not, And, Or

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } What is the name of the method?

String

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } What type of value is returned?

String

By default, attempting to write an existing text file will cause:

The existing content to be overwritted

Block scope means that a variable:

can't be used outside of the set of braces that it's declared in

A template that defines the methods and characteristics to included in a particular type of object is a(n):

class

Which method flushes any remaining data from the buffer and closes the stream?

close()

Assuming Agent is a parent class and SecretAgent is its child, what is the result of the following statement? Agent employee = new SecretAgent();

compiles normally

The default startup method for a class is known as its:

constructor

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } What are the arguments for this method?

date

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } Which of the following represent local variables?

date, hour, message

Which structure is an example of a Test Before?

do while

Which keyword is used in a class declaration to create a subclass?

extends

You can use a Scanner object to:

get the next token in an input line

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } Which of the following represent instance variables?

greetings

The following questions apply to the code fragment shown below: //Return a greeting depending upon //the time of day. String greetings(Date date){ int hour = date.getHours(); String message = ""; if (hour < 12) { message = "Good morning"; else { if (hour < 18) { message = "Good afternoon"; else { message = "Good evening"; return message; } What is the signature for this method?

greetings (Date date)

Another name for an object that belongs to a particular class is a(n):

instance

Which method verifies that a file exists before reading its content?

isFile()

A block of code that perform a particular task is called a(n):

method

Which of the following statements would create a File object to read the c:\files\data.txt file?

new File("c:/files/data.tx");

packageExtending a parent class and then including a new version of its methods in the child class is:

overriding

Which is the default visibility when none is stated?

package

Groups of related classes are organized into:

packages

Which method is used to read a line of text from a buffered reader?

readLine()

Which keyword is used to refer to a parent class?

super

Which Java keyword refers to the current object?

this

Which operator returns true if either expressions is true?

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