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Oracle 1z0-809 Exam Dumps - Pass Exam With Brilliant Score

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Oracle Java SE 8 Programmer II Sample Questions (Q83-Q88):

NEW QUESTION # 83
Given the code fragment:

What is the result?

A. [Java, J2EE, J2ME, JSTL]
B. null
C. [Java, J2EE, J2ME, JSTL, JSP]
D. A compilation error occurs.

Answer: A

NEW QUESTION # 84
Given:
class Bird {
public void fly () { System.out.print("Can fly"); }
}
class Penguin extends Bird {
public void fly () { System.out.print("Cannot fly"); }
}
and the code fragment:
class Birdie {
public static void main (String [ ] args) {
fly( ( ) -> new Bird ( ));
fly (Penguin : : new);
}
/* line n1 */
}
Which code fragment, when inserted at line n1, enables the Birdie class to compile?

A. static void fly (Consumer<? extends Bird> bird) {
bird.accept( ) fly ();
}
B. static void fly (Supplier<? extends Bird> bird) {
LOST
C. static void fly (Consumer<Bird> bird) {
bird :: fly ();
}
D. static void fly (Supplier<Bird> bird) {
bird.get( ) fly ();
}

Answer: D

NEW QUESTION # 85
Which statement is true about the single abstract method of the java.util.function.Predicate interface?

A. It accepts an argument and produces a result of any data type.
B. It accepts one argument and returns void.
C. It accepts one argument and returns boolean.
D. It accepts one argument and always produces a result of the same type as the argument.

Answer: C

Explanation:
Explanation
References:

NEW QUESTION # 86
Given the code fragments:

and

Which two modifications enable to sort the elements of the empslist? (Choose two.)

A. Replace line n1 with
class Person implements Comparable<Person>
B. Replace line n1 with
class Person extends Comparator<Person>
C. At line n2 insert
public int compare (Person p1, Person p2) {
return p1.name.compareTo (p2.name);
}
D. Replace line n1 with
class Person implements Comparator<Person>
E. At line n2 insert:
public int compareTo (Person p, Person p2) {
return p1.name.compareTo (p2.name);
}
F. At line n2 insert
public int compareTo (Person p) {
return this.name.compareTo (p.name);
}

Answer: A,F

NEW QUESTION # 87
What is true about the java.sql.Statement interface?

A. It provides a session with the database.
B. It provides a cursor to fetch the resulting data.
C. It provides a class for executing SQL statements and returning the results.
D. It is used to get an instance of a Connection object by using JDBC drivers.

Answer: C

NEW QUESTION # 88
......

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