NEW QUESTION 1
Given:

Which code, when inserted at one or more marked positions, would allow classes B and C to compile?

• A. @Override // position 3void x () {} // position 3@Override // position 3public void z() { } // position 3
• B. @Override // position 2public void z() { } // position 3
• C. implements A // position 1@Override // position 2
• D. public void z() { } // position 3

Answer: B

NEW QUESTION 2
Given:

Which two allow a.Main to allocate a new Person? (Choose two.)

• A. In Line 1, change the access modifier to privateprivate Person() {
• B. In Line 1, change the access modifier to publicpublic Person() {
• C. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
• D. In Line 2, change the access modifier to protectedprotected class Main {
• E. In Line 1, remove the access modifierPerson() {

Answer: BC

NEW QUESTION 3
Given this enum declaration:

Examine this code: System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

• A. public String toString() { return String.valueOf(ALPHA.v); }
• B. public String toString() { return String.valueOf(Letter.values()[1]); }
• C. public String toString() { return String.valueOf(v); }
• D. String toString() { return “200”; }

Answer: C

Explanation:

NEW QUESTION 4
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 5
Given:

Which three are correct? (Choose three.)

• A. b1.foo(li) prints Hello world!
• B. f1.foo(li) prints Bonjour le monde!
• C. f1.foo(li) prints Hello world!
• D. f1.foo(li) prints Hola Mundo!
• E. b1.foo(li) prints Bonjour le monde!
• F. f2.foo(li) prints Hola Mundo!
• G. f2.foo(li) prints Bonjour le monde!
• H. b1.foo(li) prints Hola Mundo!
• I. f2.foo(li) prints Hello world!

Answer: ABH

NEW QUESTION 6
Given:

What is the result?

• A. compilation error
• B. 0 5
• C. 6 13
• D. 5 12

Answer: A

Explanation:

NEW QUESTION 7
Given:
/code/a/Test.java containing:

and
/code/b/Best.java containing: package b;
public class Best { }
Which is the valid way to generate bytecode for all classes?

• A. java /code/a/Test.java
• B. javac –d /code /code/a/Test
• C. java /code/a/Test.java /code/b/Best.java
• D. java –cp /code a.Test
• E. javac –d /code /code/a/Test.java /code/b/Best.java
• F. javac –d /code /code/a/Test.java

Answer: E

NEW QUESTION 8
Given:

Which option should you choose to enable the code to print Something happened?

• A. Add extends GeneralException on line 1.Add extends Exception on line 2.
• B. Add extends SpecificException on line 1.Add extends GeneralException on line 2.
• C. Add extends Exception on line 1.Add extends Exception on line 2.
• D. Add extends Exception on line 1.Add extends GeneralException on line 2.

Answer: D

Explanation:

NEW QUESTION 9
Given:

Which three classes successfully override printOne()? (Choose three.)

• A. Option A
• B. Option B
• C. Option C
• D. Option D
• E. Option E
• F. Option F

Answer: ACD

NEW QUESTION 10
Given:

What is the result?

• A. The compilation fails.
• B. abdf
• C. abd
• D. adf
• E. abcd

Answer: E

NEW QUESTION 11
Given:

Which three are true? (Choose three.)

• A. b1.foo(c) prints Bonjour le monde!
• B. f1.foo(c) prints Hello world!
• C. f1.foo(c) prints Olá Mundo!
• D. b1.foo(c) prints Hello world!
• E. f2.foo(c) prints Olá Mundo!
• F. b1.foo(c) prints Olá Mundo!
• G. f2.foo(c) prints Bonjour le monde!
• H. f2.foo(c) prints Hello world!
• I. f1.foo(c) prints Bonjour le monde!

Answer: BFG

NEW QUESTION 12
Given:

What is the output?

• A. 300
• B. Exception
• C. 200
• D. 100

Answer: A

Explanation:

NEW QUESTION 13
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 14
Given:

Which two are correct? (Choose two.)

• A. The output will be exactly 2 1 3 4 5.
• B. The program prints 1 4 2 3, but the order is unpredictable.
• C. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
• D. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
• E. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.

Answer: BD

Explanation:

NEW QUESTION 15
Given:

What is required to make the Foo class thread safe?

• A. No change is required.
• B. Make the declaration of lock static.
• C. Replace the lock constructor call with new ReentrantLock (true).
• D. Move the declaration of lock inside the foo method.

Answer: C

NEW QUESTION 16
Given:

What is the result?

• A. is it 1
• B. An IndexOutOfBoundsException is thrown at runtime.
• C. is it 0
• D. this is it 2
• E. this is it 3

Answer: D

Explanation:

NEW QUESTION 17
Given:

and

What is the result?

• A. A NullPointerException is thrown at run time.
• B. The compilation fails.
• C. 1Null null
• D. 111
• E. A ClassCastException is thrown at run time.

Answer: B

Explanation:

NEW QUESTION 18
Given:

What will secure this code from a potential Denial of Service condition?

• A. After Line 4, add indexReader.close().
• B. On Line 3, enclose processData(dataReader) with try with resources.
• C. After Line 3, add dataReader.close().
• D. On Line 1, use try with resources when opening each dataReader.
• E. Before Line 1, check the size of dataFiles to make sure it does not exceed a threshold.

Answer: B

NEW QUESTION 19
Given:

What is the result?

• A. 4
• B. 3
• C. An exception is thrown at runtime.
• D. 5

Answer: D

Explanation:

NEW QUESTION 20
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