Oracle Oracle Certifications 1Z0-816 Questions & Answers

• Question 31:

  Given:

  

  What is the output?

  A. :APPLE:ORANGE:BANANA appleorangebanana

  B. :APPLE:ORANGE:BANANA

  C. APPLE:apple ORANGE:orange BANANA:banana

  D. appleorangebanana :APPLE:ORANGE:BANANA

  E. apple:APPLE orange:ORANGE banana:BANANA

  Correct Answer: E

  

• Question 32:

  Given: Which option should you choose to enable the code to print Something happened?

  

  A. Add extends GeneralException on line 1. Add extends Exception on line 2.

  B. Add extends SpecificException on line 1. Add extends GeneralException on line 2.

  C. Add extends Exception on line 1. Add extends Exception on line 2.

  D. Add extends Exception on line 1. Add extends GeneralException on line 2.

  Correct Answer: D

  

• Question 33:

  Given: What will secure this code from a potential Denial of Service condition?

  

  A. After Line 4, add indexReader.close().

  B. On Line 3, enclose processData(dataReader) with try with resources.

  C. After Line 3, add dataReader.close().

  D. On Line 1, use try with resources when opening each dataReader.

  E. Before Line 1, check the size of dataFiles to make sure it does not exceed a threshold.

  Correct Answer: B

• Question 34:

  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. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: C

  Reference: https://developer.ibm.com/tutorials/java-modularity-3/

• Question 35:

  Given: String originalPath = "data\\projects\\a-project\\..\\..\\another-project"; Path path = Paths.get(originalPath); System.out.print(path.normalize());

  What is the result?

  A. data\another-project

  B. data\projects\a-project\another-project

  C. data\\projects\\a-project\\..\\..\\another-project

  D. data\projects\a-project\..\..\another-project

  Correct Answer: D

  

• Question 36:

  Given:

  

  This code results in a compilation error.

  Which code should be inserted on line 1 for a successful compilation?

  A. Consumer consumer = msg -> { return System.out.print(msg); };

  B. Consumer consumer = var arg -> {System.out.print(arg);};

  C. Consumer consumer = (String args) -> System.out.print(args);

  D. Consumer consumer = System.out::print;

  Correct Answer: D

  

• Question 37:

  Given: What is the result?

  

  A. 6910 3

  B. 10126 3

  C. 3

  D. 6104 3

  Correct Answer: D

• Question 38:

  

  Which is a proper JDBC URL?

  A. jdbe.mysql.com://localhost:3306/database

  B. http://localhost.mysql.com:3306/database

  C. http://localhost mysql.jdbc:3306/database

  D. jdbc:mysql://localhost:3306/database

  Correct Answer: D

  Reference: https://vladmihalcea.com/jdbc-driver-connection-url-strings/

• Question 39:

  Given:

  

  When is the readObject method called?

  A. before this object is deserialized

  B. after this object is deserialized

  C. before this object Is serialized

  D. The method is never called.

  E. after this object is serialized

  Correct Answer: B

  Reference: https://www.oracle.com/technical-resources/articles/java/javaserial.html

• Question 40:

  Given:

  

  After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?

  A. after line 8

  B. after line 6

  C. after line 5

  D. after line 10

  Correct Answer: B