NEW QUESTION 1
Given:

What is the result?

• A. nothing
• B. It fails to compile.
• C. A java.lang.IllegalArgumentException is thrown.
• D. 10

Answer: B

Explanation:

NEW QUESTION 2
Given:

What is the result?

• A. [0,0] = Red[0,1] = White[1,0] = Black[1,1] = Blue[2,0] = Yellow[2,1] = Green[3,0] = Violet
• B. [0,0] = Red[1,0] = Black[2,0] = Blue
• C. java.lang.ArrayIndexOutOfBoundsException thrown
• D. [0,0] = Red[0,1] = White[1,0] = Black[2,0] = Blue[2,1] = Yellow[2,2] = Green[2,3] = Violet

Answer: D

Explanation:

NEW QUESTION 3
Given:

What is the type of the local variable x?

• A. Character
• B. char
• C. String[ ]
• D. String

Answer: D

NEW QUESTION 4
Given:

executed with this command: java Main one two three What is the result?

• A. 0). one
• B. 0). one1). two2). three
• C. The compilation fails.
• D. It creates an infinite loop printing:0). one1). two1). two...
• E. A java.lang.NullPointerException is thrown.

Answer: D

NEW QUESTION 5
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\another-project
• B. data\projects\a-project\another-project
• C. data\\projects\\a-project\\..\\..\\another-project
• D. data\projects\a-project\..\..\another-project

Answer: D

Explanation:

NEW QUESTION 6
Given:

What code must you insert on Line 1 to enable the code to print Hello world?

• A. Hello.Greeting myG = new Hello.Greeting() myG.sayHi();
• B. Hello myH = new Hello();Hello.Greeting myG = myH.new Greeting(); myG.sayHi();
• C. Hello myH = new Hello();Hello.Greeting myG = myH.new Hello.Greeting(); myG.sayHi();
• D. Hello myH = new Hello(); Greeting myG = new Greeting(); myG.sayHi ();

Answer: B

NEW QUESTION 7
Given these two classes:


And given this fragment:

Which describes the fragment?

• A. It throws IllegalMonitorStateException.
• B. It is subject to deadlock.
• C. It is subject to livelock.
• D. The code does not compile.

Answer: D

NEW QUESTION 8
Given:

What is the output?

• A. I am an object array
• B. The compilation fails due to an error in line 1.
• C. I am an array
• D. I am an object

Answer: D

NEW QUESTION 9
Given:
var data = new ArrayList<>(); data.add(“Peter”);
data.add(30); data.add(“Market Road”); data.set(1, 25); data.remove(2); data.set(3, 1000L); System.out.print(data); What is the output?

• A. [Market Road, 1000]
• B. [Peter, 30, Market Road]
• C. [Peter, 25, null, 1000]
• D. An exception is thrown at run time.

Answer: D

Explanation:

NEW QUESTION 10
Examine these module declarations:

Which two statements are correct? (Choose two.)

• A. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
• B. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
• C. The Consumer module should require the ServiceProvider module.
• D. The ServiceProvider module should export the com.myimpl package.
• E. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.

Answer: AC

NEW QUESTION 11
Given:

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

• A. after line 8
• B. after line 6
• C. after line 5
• D. after line 10

Answer: B

Explanation:

NEW QUESTION 12
Which describes an aspect of Java that contributes to high performance?

• A. Java prioritizes garbage collection.
• B. Java has a library of built-in functions that can be used to enable pipeline burst execution.
• C. Java monitors and optimizes code that is frequently executed.
• D. Java automatically parallelizes code execution.

Answer: C

NEW QUESTION 13
Which two statements independently compile? (Choose two.)

• A. List<? super Short> list = new ArrayList<Number>();
• B. List<? super Number> list = new ArrayList<Integer>();
• C. List<? extends Number> list = new ArrayList<Byte>();
• D. List<? extends Number> list = new ArrayList<Object>();
• E. List<? super Float> list = new ArrayList<Double>();

Answer: AC

Explanation:

NEW QUESTION 14
Given:

It is required that if p instanceof Pair then p.isValid() returns true.
Which is the smallest set of visibility changes to insure this requirement is met?

• A. setLeft and setRight must be protected.
• B. left and right must be private.
• C. isValid must be public.
• D. left, right, setLeft, and setRight must be private.

Answer: B

NEW QUESTION 15
Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

• A. m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) - 1));
• B. m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) - 1));
• C. m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1;
• D. m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1);

Answer: A

NEW QUESTION 16
Given:

Which loop incurs a compile time error?

• A. the loop starting line 11
• B. the loop starting line 7
• C. the loop starting line 14
• D. the loop starting line 3

Answer: C

NEW QUESTION 17
Given:

Which statement on line 1 enables this code to compile?

• A. Function<Integer, Integer> f = n > n * 2;
• B. Function<Integer> f = n > n * 2;
• C. Function<int> f = n > n * 2;
• D. Function<int, int> f = n > n * 2;
• E. Function f = n > n * 2;

Answer: A

Explanation:

NEW QUESTION 18
Given:

Which is true?

• A. The compilation fails due to an error in line 6.
• B. The compilation succeeds.
• C. The compilation fails due to an error in line 4.
• D. The compilation fails due to an error in line 10.
• E. The compilation fails due to an error in line 7.
• F. The compilation fails due to an error in line 9.
• G. The compilation fails due to an error in line 2.

Answer: A

NEW QUESTION 19
Given:

Which two lines can replace line 1 so that the Y class compiles? (Choose two.)

• A. map.forEach((k, v) -> set(v)));
• B. set(map.values());
• C. super.set(List<String> map)
• D. super.set(map.values());
• E. set(map)

Answer: BD

NEW QUESTION 20
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