1Z0-819 Online Practice Questions and Answers

Given:

What is the expected result of javac?

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

Given:

A. Option A

B. Option B

C. Option C

D. Option D

E. Option E

F. Option F

Given:

Which code fragment on line 1 makes the m map contain the employee with the highest salary for each neighborhood?

A. Option A

B. Option B

C. Option C

D. Option D

Given:

What is the result?

A. watermelon orange lemon grape apricot apple

B. nothing

C. apple apricot grape lemon orange watermelon

D. apple orange grape lemon apricot watermelon

Which command line runs the main class com.acme.Main from the module com.example?

A. java --module-path mods com.example/com.acme.Main

B. java lasspath com.example.jar com.acme.Main

C. java --module-path mods -m com.example/com.acme.Main

D. java -classpath com.example.jar com.example/com.acme.Main

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

A. Option A

B. Option B

C. Option C

D. Option D

Given:

Which would cause s to be AQCD?

A. s.replace(s.indexOf("A"), s.indexOf("C"), "Q");

B. s.replace(s.indexOf("B"), s.indexOf("C"), "Q");

C. s.replace(s.indexOf("B"), s.indexOf("B"), "Q");

D. s.replace(s.indexOf("A"), s.indexOf("B"), "Q");

Given:

What is the result?

A. 3 5 3 3

B. 3 3 3 3

C. 3 5 3 5

D. 5 5 3 3