1Z1-816 무료 덤프문제 온라인 액세스

Which interface in the java.util.function package will return a void return type?

• A.Predicate
• B.Supplier
• C.Consumer
• D.Function

Given:

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

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

Given:

You want to use the myResource class in a try-with-resources statement. Which change will accomplish this?

• A.Extend AutoCloseable and override the close method.
• B.Extend AutoCloseable and override the autoClose method.
• C.Implement AutoCloseable and override the autoClose method.
• D.Implement AutoCloseable and override the close method.

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

Given:

Which statement on line 1 enables this code fragment to compile?

• A.UnaryOperator<String> function = String::toUpperCase;
• B.UnaryOperator function = s -> s.toUpperCase();
• C.Function<String> function = m -> m.toUpperCase();
• D.Function function = String::toUpperCase;