Java Exam #2 2025 Questions and
Answers
An abstract class is not instantiated, but serves as a superclass for other classes.
True OR False - ANSWER✔✔-True
A(n) _____ is an object that is generated in memory as the result of an error or an
unexpected event.
a. Exception handler
b. Exception
c. Default exception handler
d. Error message - ANSWER✔✔-b. Exception
In a try/catch construct, after the catch statement is executed:
a. the program returns to the statement following the statement in which the exception
occurred
b. the program terminates
,c. the program resumes at the statement that immediately follows the try/catch
construct
d. the program resumes at the first statement of the try statement - ANSWER✔✔-c. the
program resumes at the statement that immediately follows the try/catch construct
How could the following method header be simplified?
public void copyFile(String str) throws IOException, EOFException
a. public void copyFile(String str) throws IO Exception
b. public void copyFile(String str) throws EOFException
c. public void copyFile(String str) throws EOFException, IOException
d. public void copyFile(String str) throws Exception, IOException, EOFException -
ANSWER✔✔-a. public void copyFile(String str) throws IOException
When the code in a try block may throw more than one type of exception, you need to
write a catch clause for each type of exception that could potentially be thrown.
True OR False - ANSWER✔✔-True
The illegalArgumentException class inherits from the RuntimeException class, and is
therefore:
, a. A checked exception class
b. An unchecked exception class
c. Never used directly
d. None of the above - ANSWER✔✔-b. An unchecked exception class
When you use a checked exception class, you must:
a. have a throws clause in the method heading
b. override the default error method
c. use each class only once in a method
d. ensure that the error will occur at least once each time the program is executed -
ANSWER✔✔-a. have a throws clause in the method heading
A class that has at least one abstract method is called an:
a. concrete class
b. encapsulated class
c. abstract class
d. private class - ANSWER✔✔-c. abstract class
Java allows an instance of an abstract class to be instantiated.
True OR False - ANSWER✔✔-False.
Answers
An abstract class is not instantiated, but serves as a superclass for other classes.
True OR False - ANSWER✔✔-True
A(n) _____ is an object that is generated in memory as the result of an error or an
unexpected event.
a. Exception handler
b. Exception
c. Default exception handler
d. Error message - ANSWER✔✔-b. Exception
In a try/catch construct, after the catch statement is executed:
a. the program returns to the statement following the statement in which the exception
occurred
b. the program terminates
,c. the program resumes at the statement that immediately follows the try/catch
construct
d. the program resumes at the first statement of the try statement - ANSWER✔✔-c. the
program resumes at the statement that immediately follows the try/catch construct
How could the following method header be simplified?
public void copyFile(String str) throws IOException, EOFException
a. public void copyFile(String str) throws IO Exception
b. public void copyFile(String str) throws EOFException
c. public void copyFile(String str) throws EOFException, IOException
d. public void copyFile(String str) throws Exception, IOException, EOFException -
ANSWER✔✔-a. public void copyFile(String str) throws IOException
When the code in a try block may throw more than one type of exception, you need to
write a catch clause for each type of exception that could potentially be thrown.
True OR False - ANSWER✔✔-True
The illegalArgumentException class inherits from the RuntimeException class, and is
therefore:
, a. A checked exception class
b. An unchecked exception class
c. Never used directly
d. None of the above - ANSWER✔✔-b. An unchecked exception class
When you use a checked exception class, you must:
a. have a throws clause in the method heading
b. override the default error method
c. use each class only once in a method
d. ensure that the error will occur at least once each time the program is executed -
ANSWER✔✔-a. have a throws clause in the method heading
A class that has at least one abstract method is called an:
a. concrete class
b. encapsulated class
c. abstract class
d. private class - ANSWER✔✔-c. abstract class
Java allows an instance of an abstract class to be instantiated.
True OR False - ANSWER✔✔-False.
