1Z1-816試験無料問題集（80題）「Oracle Java SE 11 Programmer II 認定」

出題：1

Given this enum declaration:

Examine this code:
System.out.println(Alphabet.getFirstLetter());
What code should be written at line 3 to make this code print A?

A. static String getFirstLetter() { return Alphabet.values()[1].toString(); }

B. final String getFirstLetter() { return A.toString(); }

C. static String getFirstLetter() { return A.toString(); }

D. String getFirstLetter() { return A.toString(); }

正解：C 解答を投票する

出題：2

Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?

A. The compilation fails because a final class cannot extend another class.

B. The compilation succeeds.

C. The compilation fails because there is no zero args constructor defined in class X.

D. The compilation fails because either class X or class Y needs to implement the toString() method.

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：3

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

A. Supplier

B. Consumer

C. Function

D. Predicate

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：4

Given the declaration:

Examine this code fragment:
/* Loc1 */ class ProcessOrders { ... }
Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)

A. @Resource

B. @Resource(priority=100)

C. @Resource(priority=0)

D. @Resource(name="Customer1", priority=100)

E. @Resource(name="Customer1")

正解：B,C 解答を投票する

出題：5

Given:

and

What is the result?

A. A ClassCastException is thrown at run time.

B. The compilation fails.

C. A NullPointerException is thrown at run time.

D. 1
1
1

E. 1
Null
null

正解：B 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：6

Given:

What action ensures successful compilation?

A. Replace public Color(int c) with private Color(int c).

B. Replace enum Color implements Serializable with public enum Color.

C. Replace int c; with private final int c;.

D. Replace int c; with private int c;.

E. Replace enum Color with public enum Color.

正解：A 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

出題：7

Assuming the Widget class has a getPrice method, this code does not compile:

Which two statements, independently, would allow this code to compile? (Choose two.)

A. Replace line 4 with Stream<Widget> widgetStream = widgets.stream();.

B. Replace line 5 with widgetStream.filter((Widget a) -> a.getPrice() > 20.00).

C. Replace line 1 with List<Widget> widgetStream = widgets.stream();.

D. Replace line 5 with widgetStream.filter(a -> ((Widget)a).getPrice() > 20.00).

正解：A,D 解答を投票する

出題：8

Given:

What is the output?

A. :APPLE:ORANGE:BANANA
appleorangebanana

B. :APPLE:ORANGE:BANANA

C. APPLE:apple ORANGE:orange BANANA:banana

D. apple:APPLE orange:ORANGE banana:BANANA

E. appleorangebanana
:APPLE:ORANGE:BANANA

正解：D 解答を投票する

解説: (GoShiken メンバーにのみ表示されます)

1Z1-816試験無料問題集「Oracle Java SE 11 Programmer II 認定」