Question 1

Which three annotation uses are valid? (Choose three.)

Options :

A : Function<String, String> func = (@NonNull x) > x.toUpperCase();

B : var v = ''Hello'' + (@Interned) ''World''

C : Function<String, String> func = (var @NonNull x) > x.toUpperCase();

D : Function<String, String> func = (@NonNull var x) > x.toUpperCase();

E : var myString = (@NonNull String) str;

F : var obj = new @Interned MyObject();

Answer: A,C

Question 2

Given:

After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the

values array is partially sorted?

Options :

A : after line 8

B : after line 6

C : after line 5

D : after line 10

Answer: B

Question 3

Given:

What is the output?

Options :

A : 300

B : Exception

C : 200

D : 100

Answer: A

Question 4

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

Options :

A : jmod describe

B : java Hello.java

C : jdeps --list-deps

D : jar --show-module-resolution

E : java --show-module-resolution

Answer: A,C

Question 5

Given:

What is the expected result of javac?

Options :

A : javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: package java does not exist

B : javac compiles Mycar.java without errors or warnings.

C : javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: expected import java.lang

D : javac fails to compile the class and prints the error message, Error: Could not find or load main class Mycar.class

Answer: B

Higher Test Marks with Free Online 1Z0-819 Exam Practice