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1z0-809 Exam Dumps : Java SE 8 Programmer II

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Java SE 8 Programmer II Questions and Answers

Question 1

Given:

and the command:

java Product 0

What is the result?

Options:

A.

An AssertionError is thrown.

B.

A compilation error occurs at line n1.

C.

New Price: 0.0

D.

A NumberFormatException is thrown at run time.

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Question 2

Given:

class CheckClass {

public static int checkValue (String s1, String s2) {

return s1 length() – s2.length();

}

}

and the code fragment:

String[] strArray = new String [] {“Tiger”, “Rat”, “Cat”, “Lion”}

//line n1

for (String s : strArray) {

System.out.print (s + “ “);

}

Which code fragment should be inserted at line n1 to enable the code to print Rat Cat Lion Tiger?

Options:

A.

Arrays.sort(strArray, CheckClass : : checkValue);

B.

Arrays.sort(strArray, (CheckClass : : new) : : checkValue);

C.

Arrays.sort(strArray, (CheckClass : : new).checkValue);

D.

Arrays.sort(strArray, CheckClass : : new : : checkValue);

Question 3

Given the code fragment:

Which should be inserted into line n1 to print Average = 2.5?

Options:

A.

IntStream str = Stream.of (1, 2, 3, 4);

B.

IntStream str = IntStream.of (1, 2, 3, 4);

C.

DoubleStream str = Stream.of (1.0, 2.0, 3.0, 4.0);

D.

Stream str = Stream.of (1, 2, 3, 4);