This document contains sample questions and explanations for the OCP Java SE 8 exam. The questions cover topics like exceptions and assertions. One question asks which exception would be thrown from a chained exception example. Another asks to identify the output of a try-catch-finally program. A third discusses the behavior of an auto-closeable resource in a try-with-resources block. The document provides explanations for each answer.

1. OCP Java SE 8 Exam
Sample Questions
Excep&ons and Asser&ons
Hari Kiran & S G Ganesh

2. Ques&on
Consider the following program:
class ChainedExcep/on {
public sta/c void foo() {
try {
throw new ArrayIndexOutOfBoundsExcep/on();
} catch(ArrayIndexOutOfBoundsExcep/on oob) {
Run/meExcep/on re = new Run/meExcep/on(oob);
re.initCause(oob);
throw re;
}
}
public sta/c void main(String []args) {
try {
foo();
} catch(Excep/on re) {
System.out.println(re.getClass());
} } }
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When executed this program from
main() by calling foo() method,
prints which of the following?
A. class
java.lang.Run/meExcep/on
B. class
java.lang.IllegalStateExcep/on
C. class java.lang.Excep/on
D. class
java.lang.ArrayIndexOutOfBou
ndsExcep/on

3. Answer
Consider the following program:
class ChainedExcep/on {
public sta/c void foo() {
try {
throw new ArrayIndexOutOfBoundsExcep/on();
} catch(ArrayIndexOutOfBoundsExcep/on oob) {
Run/meExcep/on re = new Run/meExcep/on(oob);
re.initCause(oob);
throw re;
}
}
public sta/c void main(String []args) {
try {
foo();
} catch(Excep/on re) {
System.out.println(re.getClass());
} } }
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When executed this program from
main() by calling foo() method,
prints which of the following?
A. class
java.lang.Run/meExcep/on
B. class
java.lang.IllegalStateExcep&on
C. class java.lang.Excep/on
D. class
java.lang.ArrayIndexOutOfBou
ndsExcep/on

4. Explana&on
B. class java.lang.IllegalStateExcep/on
In the expression new Run/meExcep/on(oob);, the
excep/on object oob is already chained to the
Run/meExcep/on object. The method initCause() cannot be
called on an excep/on object that already has an excep/on
object chained during the constructor call.
Hence, the call re.initCause(oob); results in initCause()
throwing an IllegalStateExcep/on .
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5. Ques&on
Consider the following program:
class EHBehavior {
public sta/c void main(String []args) {
try {
int i = 10/0; // LINE A
System.out.print("aXer throw -> ");
} catch(Arithme/cExcep/on ae) {
System.out.print("in catch -> ");
return;
} finally {
System.out.print("in finally -> ");
}
System.out.print("aXer everything");
} }
Which one of the following op/ons best describes the behaviour of this program?
A. The program prints the following: in catch -> in finally -> aXer everything
B. The program prints the following: aXer throw -> in catch -> in finally -> aXer
everything
C. The program prints the following: in catch -> aXer everything
D. The program prints the following: in catch -> in finally ->
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6. Answer
Consider the following program:
class EHBehavior {
public sta/c void main(String []args) {
try {
int i = 10/0; // LINE A
System.out.print("aXer throw -> ");
} catch(Arithme/cExcep/on ae) {
System.out.print("in catch -> ");
return;
} finally {
System.out.print("in finally -> ");
}
System.out.print("aXer everything");
} }
Which one of the following op/ons best describes the behaviour of this program?
A. The program prints the following: in catch -> in finally -> aXer everything
B. The program prints the following: aXer throw -> in catch -> in finally -> aXer
everything
C. The program prints the following: in catch -> aXer everything
D. The program prints the following: in catch -> in finally ->
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7. Explana&on
D . The program prints the following: in catch -> in finally ->
The statement println("aXer throw -> "); will never be
executed since the line marked with the comment LINE A
throws an excep/on. The catch handles Arithme/cExcep/on ,
so println("in catch -> "); will be executed.
Following that, there is a return statement, so the func/on
returns. But before the func/on returns, the finally statement
should be called, hence the statement println("in finally -> ");
will get executed. So, the statement println("aXer
everything"); will never get executed
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8. Ques&on
Consider the following program:
import java.u/l.Scanner;
class AutoCloseableTest {
public sta/c void main(String []args) {
try (Scanner consoleScanner = new Scanner(System.in)) {
consoleScanner.close(); // CLOSE
consoleScanner.close();
}
}
}
Which one of the following statements is correct?
A. This program terminates normally without throwing any excep/ons
B. This program throws an IllegalStateExcep/on
C. This program throws an IOExcep/on
D. This program throws an AlreadyClosedExcep/on
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9. Answer
Consider the following program:
import java.u/l.Scanner;
class AutoCloseableTest {
public sta/c void main(String []args) {
try (Scanner consoleScanner = new Scanner(System.in)) {
consoleScanner.close(); // CLOSE
consoleScanner.close();
}
}
}
Which one of the following statements is correct?
A. This program terminates normally without throwing any excep&ons
B. This program throws an IllegalStateExcep/on
C. This program throws an IOExcep/on
D. This program throws an AlreadyClosedExcep/on
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10. Explana&on
A . This program terminates normally without throwing any
excep/ons
The try-with-resources statement internally expands to call
the close() method in the finally block. If the resource is
explicitly closed in the try block, then calling close()
again does not have any effect. From the descrip/on of the
close() method in the AutoCloseable interface: “Closes this
stream and releases any system resources associated with it.
If the stream is already closed, then invoking this method has
no effect.”
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11. Ques&on
Consider the following program:
class Asser/onFailure {
public sta/c void main(String []args) {
try {
assert false;
} catch(Run/meExcep/on re) {
System.out.println("Run/meExcep/on");
} catch(Excep/on e) {
System.out.println("Excep/on");
} catch(Error e) { // LINE A
System.out.println("Error" + e);
} catch(Throwable t) {
System.out.println("Throwable");
}
}
}
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This program is invoked from the
command line as follows:
java Asser)onFailure
Choose one of the following op/ons
describes the behaviour of this
program:
A. Prints "Run/meExcep/on" in
console
B. Prints "Excep/on"
C. Prints "Error"
D. Prints "Throwable"
E. Does not print any output on
console

12. Answer
Consider the following program:
class Asser/onFailure {
public sta/c void main(String []args) {
try {
assert false;
} catch(Run/meExcep/on re) {
System.out.println("Run/meExcep/on");
} catch(Excep/on e) {
System.out.println("Excep/on");
} catch(Error e) { // LINE A
System.out.println("Error" + e);
} catch(Throwable t) {
System.out.println("Throwable");
}
}
}
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This program is invoked from the
command line as follows:
java Asser)onFailure
Choose one of the following op/ons
describes the behaviour of this
program:
A. Prints "Run/meExcep/on" in
console
B. Prints "Excep/on"
C. Prints "Error"
D. Prints "Throwable"
E. Does not print any output on
console

13. Explana&on
E . Does not print any output on the console
By default, asser/ons are disabled. If -ea (or the -
enableasser/ons op/on to enable asser/ons), then the
program would have printed "Error" since the excep/on
thrown in the case of asser/on failure is
java.lang.Asser/onError , which is derived from
the Error class
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14. Ques&on
Consider the following class hierarchy from the package
javax.security.auth.login and answer the ques&ons.
Which of the following handlers that makes use of mul/-catch excep/on handler
feature will compile without errors?
A. catch (AccountExcep/on | LoginExcep/on excep/on)
B. catch (AccountExcep/on | AccountExpiredExcep/on excep/on)
C. catch (AccountExpiredExcep/on | AccountNotFoundExcep/on excep/on)
D. catch (AccountExpiredExcep/on excep/on1 | AccountNotFoundExcep/on
excep/on2)
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15. Answer
Consider the following class hierarchy from the package
javax.security.auth.login and answer the ques&ons.
Which of the following handlers that makes use of mul/-catch excep/on handler
feature will compile without errors?
A. catch (AccountExcep/on | LoginExcep/on excep/on)
B. catch (AccountExcep/on | AccountExpiredExcep/on excep/on)
C. catch (AccountExpiredExcep&on | AccountNotFoundExcep&on excep&on)
D. catch (AccountExpiredExcep/on excep/on1 | AccountNotFoundExcep/on
excep/on2)
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16. Explana&on
C . catch (A ccountExpiredExcep/on | A
ccountNotFoundExcep/on excep/on)
For A and B, the base type handler is provided with the
derived type handler, hence the mul/-catch is incorrect.
For D, the excep/on name excep/on1 is redundant and will
result in a syntax error. C is the correct op/on and this will
compile fine without errors.
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