Oracle Oracle Certifications 1Z0-819 Questions & Answers

• Question 101:

  Given:

  

  What is the result?

  A. [A, B, C] followed by an exception thrown on line 11.

  B. [A, B, C] [A, B]

  C. [A, B, C] [A, B, C]

  D. On line 9, an exception is thrown at run time.

  Correct Answer: C

  

  interface, text, application

• Question 102:

  Given the code fragment:

  

  What is the result?

  A. ab cd ef

  B. An ArrayIndexOutOfBoundsException is thrown at runtime.

  C. The compilation fails.

  D. abc def

  E. ad be cf

  Correct Answer: E

• Question 103:

  Given:

  

  What is the result?

  A. WorkingUnknown

  B. Unknown

  C. TuesdayUnknown

  D. The compilation fails.

  E. Tuesday

  F. Working

  Correct Answer: B

  

• Question 104:

  Given:

  

  What is the result?

  A. null

  B. nothing

  C. It fails to compile.

  D. java.lang.IllegalAccessException is thrown.

  E. Student

  Correct Answer: C

• Question 105:

  Which two commands are used to identify class and module dependencies? (Choose two.)

  A. java --show-module-resolution

  B. jmod describe

  C. java Hello.java

  D. jdeps --list-deps

  E. jar --show-module-resolution

  Correct Answer: BD

  The two commands that can be used to identify class and module dependencies are B. jmod describe and D. jdeps --list-deps.jmod describe is a command that can be used to display information about the contents of a jmod file, including its dependencies 1. jdeps --list-deps is a command that can be used to list the dependencies of a Java class file 1jdeps is a command-line tool that can be used to analyze the static dependencies of Java applications and libraries

• Question 106:

  Given the code fragment:

  

  You want to display the value of currency as $100.00. Which code inserted on line 1 will accomplish this?

  A. NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();

  B. NumberFormat formatter = NumberFormat.getCurrency(locale);

  C. NumberFormat formatter = NumberFormat.getInstance(locale);

  D. NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);

  Correct Answer: D

  D is the correct, as A returned the currency set for the number format.

• Question 107:

  Given:

  

  What is the result?

  A. 385

  B. 3

  C. The compilation fails.

  D. 80

  E. 25

  Correct Answer: D

• Question 108:

  Given: What code inserted into class C would allow it to compile?

  

  A. public void x() { } public void z() { }

  B. public void x() { } protected void y() { super.y(); } public void z() { }

  C. void x() { } public void y() { } public void z() { }

  D. void x() { super.y(); } public void z() { }

  E. void x() { } public void z() { }

  Correct Answer: A

• Question 109:

  Assume ds is a DataSource and the EMP table is defined appropriately.

  

  What does executing this code fragment do?

  A. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', NULL)

  B. inserts two rows (101, 'SMITH', 'HR') and (102, 'JONES', 'HR')

  C. inserts one row (101, 'SMITH', 'HR')

  D. throws a SQLException

  Correct Answer: C

• Question 110:

  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