Given the code fragment:

You must make the countvariable thread safe.
Which two modifications meet your requirement? (Choose two.)

• A.replace line 2 with public static synchronized void main(String[] args) {
• B.replace line 1 with private volatile int count = 0;
• C.replace line 3 with
  synchronized(test) {
  test.count++;
  }
• D.replace line 1 with private AtomicInteger count = new AtomicInteger(0);and replace line 3 with test.count.incrementAndGet();
• E.replace line 3 with
  synchronized(test.count) {
  test.count++;
  }

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Given:

What is the result?
A)

B)

C)

D)

• A.Option B
• B.Option D
• C.Option C
• D.Option A

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Given:

What is the result?

• A.A ClassCastException is thrown at runtime.
• B.AnotherClass#methodA()AnotherClass#methodA()
• C.The compilation fails.
• D.SomeClass#methodA()AnotherClass#methodA()
• E.AnotherClass#methodA()SomeClass#methodA()
• F.SomeClass#methodA()SomeClass#methodA()

Correct Answer: C

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Given:

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

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

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Given:

Examine these requirements:
* Eliminate code duplication.
* Keep constant the number of methods other classes may implement from this interface.
Which method can be added to meet these requirements?

• A.Option B
• B.Option C
• C.Option D
• D.Option A

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