NEW QUESTION 1
A bookstore's sales are represented by a list of Sale objects populated with the name of the customer and the books they purchased.
public class Sale { private String customer;
private List<Book> items;
// constructor, setters and getters not shown
}
public class Book { private String name; private double price;
// constructor, setters and getters not shown
}
Given a list of Sale objects, tList, which code fragment creates a list of total sales for each customer in ascending order?

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Answer: C

NEW QUESTION 2
Given:

Which three actions implement Java SE security guidelines? (Choose three.)

• A. Change line 7 to return names.clone();.
• B. Change line 4 to this.names = names.clone();.
• C. Change the getNames() method name to get$Names().
• D. Change line 6 to public synchronized String[] getNames() {.
• E. Change line 2 to private final String[] names;.
• F. Change line 3 to private Secret(String[] names) {.
• G. Change line 2 to protected volatile String[] names;.

Answer: EFG

NEW QUESTION 3
Given the code fragment:

What is the output?

• A. The compilation fail
• B. [-1, -2, -3]
• C. [-3, -2, -1]
• D. A runtime exception is thrown.

Answer: D

NEW QUESTION 4
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 5
Which two statements are true about Java modules? (Choose two.)

• A. Modular jars loaded from --module-path are automatic modules.
• B. Any named module can directly access all classes in an automatic module.
• C. Classes found in –classpath are part of an unnamed module.
• D. Modular jars loaded from –classpath are automatic modules.
• E. If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.

Answer: AC

NEW QUESTION 6
Given:

What is the result?

• A. 42
• B. The compilation fails due to an error in line 4.
• C. 17
• D. The compilation fails due to an error in line 3.
• E. The compilation fails due to an error in line 2.
• F. The compilation fails due to an error in line 1.
• G. The compilation fails due to an error in line 5.

Answer: A

NEW QUESTION 7
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 –classpath com.example.jar com.acme.Main
• C. java --module-path mods -m com.example/com.acme.Main
• D. java -classpath com.example.jar –m com.example/com.acme.Main

Answer: D

NEW QUESTION 8
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 9
Given:

Which two methods facilitate valid ways to read instance fields? (Choose two.)

• A. getTCount
• B. getACount
• C. getTotalCount
• D. getCCount
• E. getGCount

Answer: CD

NEW QUESTION 10
Given:

Why does D cause a compilation error?

• A. D inherits a() only from C.
• B. D inherits a() from B and C but the return types are incompatible.
• C. D extends more than one interface.
• D. D does not define any method.

Answer: B

NEW QUESTION 11
Given: Automobile.java

Car.java

What must you do so that the code prints 4?

• A. Remove the parameter from wheels method in line 3.
• B. Add @Override annotation in line 2.
• C. Replace the code in line 2 with Car ob = new Car();
• D. Remove abstract keyword in line 1.

Answer: B

Explanation:

NEW QUESTION 12
Given:
LocalDate d1 = LocalDate.of(1997,2,7); DateTimeFormatter dtf = DateTimeFormatter.ofPattern( /*insert code here*/ ); System.out.println(dtf.format (d1));
Which pattern formats the date as Friday 7th of February 1997?

• A. “eeee dd+”th of”+ MMM yyyy”
• B. “eeee dd'th of' MMM yyyy”
• C. “eeee d+”th of”+ MMMM yyyy”
• D. “eeee d’th of’ MMMM yyyy”

Answer: B

NEW QUESTION 13
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 14
Given:

When run and all three files exist, what is the state of each reader on Line 1?

• A. All three readers are still open.
• B. All three readers have been closed.
• C. The compilation fails.
• D. Only reader1 has been closed.

Answer: C

NEW QUESTION 15
Given:

Which one is correct?

• A. An IllegalThreadStateException is thrown at run time.
• B. Three threads are created.
• C. The compilation fails.
• D. Four threads are created.

Answer: A

Explanation:

NEW QUESTION 16
......