Given:

You want the code to produce this output:
John
Joe
Jane
Which code fragment should be inserted on line 1 and line 2 to produce the output?

• A.Insert Comparator<Person> on line 1.
  Insert
  public int compare(Person p1, Person p2) {
  return p1.name.compare(p2.name);
  }
  on line 2.
• B.Insert Comparator<Person> on line 1.
  Insert
  public int compare(Person person) {
  return person.name.compare(this.name);
  }
  on line 2.
• C.Insert Comparable<Person> on line 1.
  Insert
  public int compare(Person p1, Person p2) {
  return p1.name.compare(p2.name);
  }
  on line 2.
• D.Insert Comparator<Person> on line 1.
  Insert
  public int compareTo(Person person) {
  return person.name.compareTo(this.name);
  }
  on line 2.

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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"; }

Correct Answer: C

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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"; }

Correct Answer: C

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Given:

This code results in a compilation error.
Which code should be inserted on line 1 for a successful compilation?

• A.Consumer consumer = msg -> { return System.out.print(msg); };
• B.Consumer consumer = var arg -> {System.out.print(arg);};
• C.Consumer consumer = (String args) -> System.out.print(args);
• D.Consumer consumer = System.out::print;

Correct Answer: D

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Given:

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

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

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