Oracle Oracle Certifications 1Z0-819 Questions & Answers

• Question 231:

  Given:

  

  What is the result?

  A. An exception is thrown at runtime.

  B. 42=(x+y)=42

  C. 42=(x+y)=6

  D. 6=(x+y)=42

  E. 6=(x+y)=6

  Correct Answer: D

  

• Question 232:

  Given:

  

  Which two changes need to be made to make this class compile? (Choose two.)

  A. Change Line 1 to a class: public class API {

  B. hange Line 2 to an abstract method: public abstract void checkValue(Object value) throws IllegalArgumentException;

  C. hange Line 2 access modifier to protected: protected void checkValue(Object value) throws IllegalArgumentException;

  D. Change Line 1 to extend java.lang.AutoCloseable: public interface API extends AutoCloseable {

  E. Change Line 1 to an abstract class: public abstract class API {

  Correct Answer: BE

• Question 233:

  Given:

  

  Which two statements can be added at line 1 in Bar to successfully compile it? (Choose two.)

  A. public List foo(Set m) { ... }

  B. public ArrayList foo(Set m) { ... }

  C. public List foo(TreeSet m) { ... }

  D. public List foo(Set m) { ... }

  E. public List