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Home Oracle 1z0-816

Oracle 1z0-816 Exam Practice Questions (P. 5)

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Question #21
Given:

What code must you insert on Line 1 to enable the code to print Hello world?
  1. A
    Hello.Greeting myG = new Hello.Greeting()myG.sayHi();
  2. B
    Hello myH = new Hello();Hello.Greeting myG = myH.new Greeting();myG.sayHi();
  3. C
    Hello myH = new Hello(); Hello.Greeting myG = myH.new Hello.Greeting();myG.sayHi();
  4. D
    Hello myH = new Hello();Greeting myG = new Greeting();myG.sayHi ();

Correct Answer:
B

Question #22
Which code fragment prints 100 random numbers?
  1. A
  2. B
  3. C
  4. D

Correct Answer:
D

Question #23
You are working on a functional bug in a tool used by your development organization. In your investigation, you find that the tool is executed with a security policy file containing this grant.

What action should you take?
  1. A
    Nothing, because it is an internal tool and not exposed to the public.
  2. B
    Remove the grant because it is excessive.
  3. C
    Nothing, because it is not related to the bug you are investigating.
  4. D
    File a security bug against the tool referencing the excessive permission granted.
  5. E
    Nothing, because listing just the required permissions would be an ongoing maintenance challenge.

Correct Answer:
D

Question #24
Given an application with a main module that has this module-info.java file:

Which two are true? (Choose two.)
  1. A
    A module providing an implementation of country.CountryDetails can be compiled and added without recompiling the main module.
  2. B
    A module providing an implementation of country.CountryDetails must have a requires main; directive in its module-info.java file.
  3. C
    An implementation of country.countryDetails can be added to the main module.
  4. D
    To compile without an error, the application must have at least one module in the module source path that provides an implementation of country.CountryDetails.
  5. E
    To run without an error, the application must have at least one module in the module path that provides an implementation of country.CountryDetails.

Correct Answer:
BD

Question #25
Given:

What action ensures successful compilation?
  1. A
    Replace public Color(int c) with private Color(int c).
  2. B
    Replace int c; with private int c;.
  3. C
    Replace int c; with private final int c;.
  4. D
    Replace enum Color implements Serializable with public enum Color.
  5. E
    Replace enum Color with public enum Color.

Correct Answer:
A

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