Free Oracle 1Z0-819 Exam Questions

Become Oracle Certified with updated 1Z0-819 exam questions and correct answers

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Total 515 Questions | Updated On: Jan 28, 2026

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Question 1

Assuming the Widget class has a getPrice method, this code does not compile:

Which two statements, independently, would allow this code to compile? (Choose two.)

A : Replace line 5 with widgetStream.filter(a #> ((Widget)a).getPrice() > 20.00).

B : Replace line 1 with List widgetStream = widgets.stream();.

C : Replace line 5 with widgetStream.filter((Widget a) #> a.getPrice() > 20.00)

D : Replace line 4 with Stream widgetStream = widgets.stream();.

Answer: A,D

Question 2

Given:

What is the result?

A : The compilation fails.

B : abdf

C : abd

D : adf

E : abcd

Answer: A

Question 3

Given:

What is the result?

A : null

B : nothing

C : It fails to compile.

D : java.lang.IllegalAccessException is thrown.

E : Student

Answer: C

Question 4

Which method throws an exception for not-a-number and infinite input values?

A :

B :

C :

D :

Answer: A

Question 5

Which two statements independently compile? (Choose two.)

A : List super Short> list = new ArrayList();

B : List super Number> list = new ArrayList();

C : List extends Number> list = new ArrayList();

D : List extends Number> list = new ArrayList();

E : List super Float> list = new ArrayList();

Answer: A,C

Page: 1 / 103

Total 515 Questions | Updated On: Jan 28, 2026

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