Oracle Oracle Certifications 1Z0-809 Questions & Answers

• Question 101:

  Given the code fragment:

  

  Assume that:

  The required database driver is configured in the classpath.

  The appropriate database is accessible with the dbURL, userName, and passWord exists

  The Employee table has a column ID of type integer and the SQL query matches one record.

  What is the result?

  A. Compilation fails at line 14.

  B. Compilation fails at line 15.

  C. The code prints the employee ID.

  D. The code prints Error.

  Correct Answer: A

• Question 102:

  Given the code fragment:

  

  What is the result?

  A. A compilation error occurs at line n1.

  B. A compilation error occurs at line n2.

  C. The code reads the password without echoing characters on the console.

  D. A compilation error occurs because the IOException isn't declared to be thrown or caught?

  Correct Answer: A

• Question 103:

  

  and the code fragment?

  

  What is the result?

  A. $15.00

  B. 15 $

  C. USD 15.00

  D. USD $15

  Correct Answer: A

• Question 104:

  Given the code fragment:

  

  What is the result?

  A. text1text2

  B. text1text2text2text3

  C. text1

  D. [text1, text2]

  Correct Answer: A

• Question 105:

  Given:

  

  and

  

  Which interface from the java.util.function package should you use to refactor the class Txt?

  A. Consumer

  B. Predicate

  C. Supplier

  D. Function

  Correct Answer: C

  Reference: https://docs.oracle.com/javase/8/docs/api/java/util/function/package-summary.html

• Question 106:

  Given:

  

  and the command: java Product 0 What is the result?

  A. An AssertionError is thrown.

  B. A compilation error occurs at line n1.

  C. New Price: 0.0

  D. A NumberFormatException is thrown at run time.

  Correct Answer: C

• Question 107:

  Given the code fragment:

  

  Which is the valid definition of the Course enum?

  

  A.

  

  B. C. D.

  Correct Answer: D

• Question 108:

  Given:

  

  and this code fragment:

  

  What is the result?

  A. Open-Close– Exception – 1 Open–Close–

  B. Open–Close–Open–Close–

  C. A compilation error occurs at line n1.

  D. Open–Close–Open–

  Correct Answer: C

• Question 109:

  Given the code fragment:

  

  Which code fragment, when inserted at line n1, ensures false is printed?

  A. boolean b = cs.stream() .findAny() .get() .equals("Java");

  B. boolean b = cs.stream() .anyMatch (w -> w.equals ("Java"));

  C. boolean b = cs.stream() .findFirst() .get() .equals("Java");

  D. boolean b = cs.stream() .allMatch(w -> w.equals("Java"));

  Correct Answer: B

• Question 110:

  Given the code fragment: What is the result?

  

  A. A compilation error occurs at line n1.

  B. courseJava

  C. Javacourse

  D. A compilation error occurs at line n2.

  Correct Answer: A