최신 1z1-819 무료덤프 - Oracle Java SE 11 Developer

문제1

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

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

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

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

정답: B,D

문제2

Given the code fragment:

Which statement at line 1 will print Ping Pong?

A.

B.

C.

D.

정답: D

문제3

Given the code fragment:

You want to validate a path name before the read file. Before validation, all path names should be canonicalized.
Which code inserted on line nl will accomplish this?

A.

B.

C.

D.

정답: D

문제4

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(v); }

C. String toString() { return "200"; }

D. public String toString() { return String.valueOf(Letter.values()[1]); }

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제5

Given:

What is the output?

A. appleorangebanana
:APPLE:ORANGE:BANANA

B. APPLE:apple ORANGE:orange BANANA:banana

C. :APPLE:ORANGE:BANANA
appleorangebanana

D. apple:APPLE orange:ORANGE banana:BANANA

E. :APPLE:ORANGE:BANANA

정답: D

설명: (DumpTOP 회원만 볼 수 있음)

문제6

Given:

What is the result?

A. [A, B, C]
[ B, C]

B. [A, B, C]
followed by an exception thrown on line 11.

C. On line 9, an exception is thrown at run time.

D. [A, B, C]
[A, B, C]

정답: D

문제7

Given:

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

A. Change line 3 to private Secret(String[] names) {.

B. Change line 2 to protected volatile String[] names;.

C. Change line 7 to return names.clone();.

D. Change line 4 to this.names = names.clone();.

E. Change line 2 to private final String[] names;.

F. Change the getNames() method name to get$Names().

G. Change line 6 to public synchronized String[] getNames() {.

정답: A,B,E

문제8

Given:

What is the result?

A. null

B. It fails to compile.

C. java.lang.IllegalAccessException is thrown.

D. nothing

E. Student

정답: B

문제9

Given the declaration:

Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)

A. @Resource(value={{}})

B. @Resource

C. @Resource("Customer1")

D. @Resource()

E. @Resource({"Customer1", "Customer2"})

정답: C,E

문제10

Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

A. protected void walk(){}

B. void walk(){}

C. abstract void walk();

D. private void walk(){}

E. public abstract void walk();

정답: A,E

문제11

Given:

Which two statements are true if the method is added to Bar? (Choose two.)

A. public Collection<String> foo(Collection<String> arg) { ... } overrides Foo.foo.

B. public <T> Collection<T> foo(Stream<T> arg) { ... } overloads Foo.foo.

C. public <T> List<T> foo(Collection<T> arg) { ... } overrides Foo.foo.

D. public <T> Collection<T> bar(Collection<T> arg) { ... } overloads Foo.foo.

E. public <T> Iterable<T> foo(Collection<T> arg) { ... } overrides Foo.foo.

F. public <T> Collection<T> foo(Collection<T> arg) { ... } overloads Foo.foo.

정답: C,E

문제12

Given:

What is the result?

A. Good Morning, Harry

B. Good Night, Potter

C. Good Morning, Potter

D. Good Night, Harry

정답: B

설명: (DumpTOP 회원만 볼 수 있음)

문제13

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(priority=100)

B. @Resource

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

D. @Resource(priority=0)

E. @Resource(name="Customer1")

정답: A,D

문제14

Given:

What is required to make the Foo class thread safe?

A. Replace the lock constructor call with new ReentrantLock (true).

B. Make the declaration of lock static.

C. Move the declaration of lock inside the foo method.

D. No change is required.

정답: A

문제15

Which statement about access modifiers is correct?

A. An inner class cannot be declared with the public modifier.

B. An abstract method can be declared with the private modifier.

C. An instance variable can be declared with the static modifier.

D. A local variable can be declared with the final modifier.

E. An interface can be declared with the protected modifier.

정답: D

문제16

Given the code fragment:
Which two code snippets inserted independently inside println method print Mondial:domainmodel? (Choose two.)

A. Main.prefix + Main.getName()

B. Main.prefix + Main.name

C. new Main().prefix + new Main().name

D. prefix + Main.name

E. prefix + getName

F. prefix + name

정답: A,E

문제17

Given:

Which three are correct? (Choose three.)

A. f2.foo(li) prints Hello world!

B. f1.foo(li) prints Hola Mundo!

C. b1.foo(li) prints Hola Mundo!

D. f1.foo(li) prints Hello world!

E. f1.foo(li) prints Bonjour le monde!

F. f2.foo(li) prints Bonjour le monde!

G. f2.foo(li) prints Hola Mundo!

H. b1.foo(li) prints Hello world!

I. b1.foo(li) prints Bonjour le monde!

정답: C,E,H

문제18

Given:

Which three are true? (Choose three.)

A. f1.foo(c) prints Ola Mundo!

B. f1.foo(c) prints Bonjour le monde!

C. f2.foo(c) prints Ola Mundo!

D. b1.foo(c) prints Bonjour le monde!

E. b1.foo(c) prints Ola Mundo!

F. f2.foo(c) prints Bonjour le monde!

G. f1.foo(c) prints Hello world!

H. b1.foo(c) prints Hello world!

I. f2.foo(c) prints Hello world!

정답: E,F,G

문제19

Given:

What is the result?

A. Joe
null

B. Joe
Marry

C. null
null

D. null
Mary

정답: A

설명: (DumpTOP 회원만 볼 수 있음)

최신 1z1-819 무료덤프 - Oracle Java SE 11 Developer

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