1Z0-819 by Oracle Valid Free Exam Practice Test

Question 1

Which two statements are true about the modular JDK? (Choose two.)

A. APIs are deprecated more aggressively because the JDK has been modularized. B. The foundational APIs of the Java SE Platform are found in the java.base module. C. It is possible but undesirable to configure modules' exports from the command line. D. An application must be structured as modules in order to run on the modular JDK.

Correct Answer: B,C

Question 2

Given:

What is the result?

A. At once 1 B. At once 0 C. Hat at store 4 D. An indexOutofBoundsException is thrown at runtime. E. Hat at store 1

Correct Answer: E

Question 3

Given the code fragment:

What is the result?

A. 2 4 6 8 B. 1 3 5 7 9 11 C. 2 4 6 B 10 D. 13 5 7 9

Correct Answer: B

Question 4

Given:
String originalPath = "data\\projects\\a-project\\..\\..\\another-project"; Path path = Paths.get(originalPath); System.out.print(path.normalize()); What is the result?

A. data\\projects\\a-project\\..\\..\\another-project B. data\projects\a-project\another-project C. data\another-project D. data\projects\a-project\..\..\another-project

Correct Answer: D

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Question 5

There is a copyServiceAPI that has the org.copyservice. spi. Copy interface To use this service in a module, which module- info.java would be correct?

A.

B.

C.

D.

Correct Answer: C

Question 6

Given:

Which two interfaces can be used in lambda expressions? (Choose two.)

A. MyInterface1 B. MyInterface2 C. MyInterface3 D. MyInterface5 E. MyInterface4

Correct Answer: B,D

Question 7

Which code fragment does a service use to load the service provider with a Print interface?

A. private Print print = new com.service.Provider.PrintImpl(); B. private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class); C. private Print print = com.service.Provider.getInstance(); D. private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();

Correct Answer: B

Question 8

Given:

If file "App.config" is not found, what is the result?

A. Configuration is OK B. nothing C. Exception in thread "main" java.lang.Error:Fatal Error: Configuration File, App.config, is missing. D. The compilation fails.

Correct Answer: D

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Question 9

Which is the correct order of possible statements in the structure of a Java class file?

A. import, class, package B. import, package, class C. class, package, import D. package, import, class E. package, class, import

Correct Answer: D

Question 10

Given:

Which annotation should be used to remove warnings from compilation?

A. @SuppressWarnings("unchecked") on main and @SafeVarargs on the print method B. @SuppressWarnings("rawtypes") on main and @SafeVarargs on the print method C. @SuppressWarnings("all") on the main and print methods D. @SuppressWarnings on the main and print methods

Correct Answer: A

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Question 11

Given the code fragment:

What is the result?

A. gh ij kl B. gj hk il C. The compilation fails. D. ghi jkl E. An ArrayIndexOutofBoundsException is thrown at runtime.

Correct Answer: E

Oracle Java SE 11 Developer - 1Z0-819 Exam Practice Test