1Z0-819 Oracle Exam Questions and Free Practice Test

Question 37

A company has an existing sales application using a Java 8 jar file containing packages: com.company.customer;
com.company.customer.orders; com.company.customer.info; com.company.sales;
com.company.sales.leads; com.company.sales.closed; com.company.orders; com.company.orders.pending; com.company.orders.shipped.
To modularize this jar file into three modules, customer, sales, and orders, which module-info.java would be correct?
A)
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B)

C)

D)

A. Option A

B. Option B

C. Option C

D. Option D

Correct Answer:C

Question 38

Given:
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and omitting the throws FooException clause results in a compilation error. Which statement is true about FooException?

A. FooException is a subclass of RuntimeError.

B. FooException is unchecked.

C. The body of foo can only throw FooException.

D. The body of foo can throw FooException or one of its subclasses.

Correct Answer:D

Question 39

Given:
/code/a/Test.java containing:
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and
/code/b/Best.java containing: package b;
public class Best { }
Which is the valid way to generate bytecode for all classes?

A. java /code/a/Test.java

B. javac –d /code /code/a/Test

C. java /code/a/Test.java /code/b/Best.java

D. java –cp /code a.Test

E. javac –d /code /code/a/Test.java /code/b/Best.java

F. javac –d /code /code/a/Test.java

Correct Answer:E

Question 40

What makes Java dynamic?

A. At runtime, classes are loaded as needed, and new code modules can be loaded on demand.

B. The runtime can process machine language sources as well as executables from different language compilers.

C. The Java compiler uses reflection to test if class methods are supported by resources of a target platform.

D. The Java compiler preprocesses classes to run on specific target platforms.

Correct Answer:A

Question 41

Given:
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What is the result?

A. 2134

B. 2143

C. 214

D. 234

Correct Answer:C
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Question 42

Given:
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executed with this command: java Main one two three
What is the output of this class?

A. The compilation fails.

B. 1) one2) two3) three

C. A java.lang.ArrayIndexOutOfBoundsException is thrown.

D. 1) one

E. nothing

Correct Answer:B

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