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Exam overview

Oracle 1Z0-809 Exam Dumps

Vendor

Oracle

Exam Code

 1Z0-809

Actual Exam Duration

 150 Minutes

TOTAL QUESTIONS

196

Exam Name

 Java SE 8 Programmer II

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Exam practice

Exam Q&A

Select an option, then click Show Answer.

Q1:

Which two are elements of a singleton class? (Choose two.)

A: a transient reference to point to the single instance

B: a public method to instantiate the single instance

C: a public static method to return a copy of the singleton reference

D: a private constructor to the class

E: a public reference to point to the single instance

Correct Answer: B, D

Q2:

Given the code fragment: UnaryOperator uo1 = s -> s*2;line n1 List loanValues = Arrays.asList(1000.0, 2000.0); loanValues.stream() .filter(lv -> lv >= 1500) .map(lv -> uo1.apply(lv)) .forEach(s -> System.out.print(s + ” ”)); What is the result?

A: 4000.0

B: 4000

C: A compilation error occurs at line n1.

D: A compilation error occurs at line n2.

Correct Answer: D

Q3:

Given the code fragment: List str = Arrays.asList (”my”, ”pen”, ”is”, ”your’, ”pen”); Predicate test = s -> { int i = 0; boolean result = s.contains (”pen”); System.out.print(i++) + ”:”); return result; }; str.stream() .filter(test) .findFirst() .ifPresent(System.out ::print); What is the result?

A: 0 : 0 : pen

B: 0 : 1 : pen

C: 0 : 0 : 0 : 0 : 0 : pen

D: 0 : 1 : 2 : 3 : 4 :

E: A compilation error occurs.

Correct Answer: A

Q4:

What is true about the jav a.sql.Statement interface?

A: It provides a session with the database.

B: It is used to get an instance of a Connection object by using JDBC drivers.

C: It provides a cursor to fetch the resulting data.

D: It provides a class for executing SQL statements and returning the results.

Correct Answer: D

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