1Z0-819 Oracle Exam Questions and Free Practice Test

Question 43

Given:
1Z0-819 dumps exhibit
Which two lines of code when inserted in line 1 correctly modifies instance variables? (Choose two.)

A. setCCount(c) = cCount;

B. tCount = tCount;

C. setGCount(g);

D. cCount = setCCount(c);

E. aCount = a;

Correct Answer:BE

Question 44

Assuming the Widget class has a getPrice method, this code does not compile:
1Z0-819 dumps exhibit
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();.

Correct Answer:AD

Question 45

Which interface in the java.util.function package will return a void return type?

A. Supplier

B. Predicate

C. Function

D. Consumer

Correct Answer:D

Question 46

Given:
1Z0-819 dumps exhibit
What is the result?

A. null

B. Joe Bloggs

C. The compilation fails due to an error in line 1.

D. p1

Correct Answer:C
1Z0-819 dumps exhibit

Question 47

Given:
1Z0-819 dumps exhibit
Which two lines cause compilation errors? (Choose two.)

A. line 12

B. line 6

C. line 9

D. line 8

E. line 7

Correct Answer:BE

Question 48

Which two are successful examples of autoboxing? (Choose two.)

A. String a = “A”;

B. Integer e = 5;

C. Float g = Float.valueOf(null);

D. Double d = 4;

E. Long c = 23L;

F. Float f = 6.0;

Correct Answer:AB

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