[Free] 2018(Mar) EnsurePass Passguide Oracle 1z0-808 Dumps with VCE and PDF 51-60

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Java SE 8 Programmer I

Question No: 51

Given the code fragment:

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Which code fragment, when inserted at // insert code here, enables the code to compile and and print a b c?

  1. List update (String[] strs)

  2. Static ArrayListupdate(String [] strs)

  3. Static List update (String [] strs)

  4. Static void update (String[] strs)

  5. ArrayList static update(String [] strs)

Answer: E

Question No: 52

Given the code fragment:

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What is the result?

  1. [Robb, Rick, Bran]

  2. [Robb, Rick]

  3. [Robb, Bran, Rick, Bran]

  4. An exception is thrown at runtime.

Answer: A

Question No: 53

Given:

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What is the result?

  1. Null

  2. Compilation fails

  3. An exception is thrown at runtime

  4. 0

Answer: C

Question No: 54

Given the code fragment:

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What is the result?

  1. 20

  2. 25

  3. 29

  4. Compilation fails

  5. AnArrayIndexOutOfBoundsException is thrown at runtime

Answer: A

Question No: 55

Which two actions will improve the encapsulation of a class?

  1. Changing the access modifier of a field from public to private

  2. Removing the public modifier from a class declaration

  3. Changing the return type of a method to void

  4. Returning a copy of the contents of an array or ArrayList instead of a direct reference

Answer: A,D

Reference: http://www.tutorialspoint.com/java/java_access_modifiers.htm

Question No: 56

Given:

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What is the result?

  1. C B A

  2. C

  3. A B C

  4. Compilation fails at line n1 and line n2

Answer: C

Question No: 57

Given the code fragment from three files:

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Which code fragment, when inserted at line 2, enables the code to compile?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

  5. Option E

Answer: E

Question No: 58

Given the code fragment:

StringBuilder sb = new StringBuilder ( ) ; Sb.append (“world”);

Which code fragment prints Hello World?

  1. sb.insert(0,quot;Hello quot;); System.out.println(sb);

  2. sb.append(0,quot;Hello quot;); System.out.println(sb);

  3. sb.add(0,quot;Hello quot;); System.out.println(sb);

  4. sb.set(0,quot;Hello quot;); System.out.println(sb);D

Answer: A

Explanation: The java.lang.StringBuilder.insert(int offset, char c) method inserts the string representation of the char argument into this sequence.

The second argument is inserted into the contents of this sequence at the position indicated by offset. The length of this sequence increases by one.The offset argument must be greater than or equal to 0, and less than or equal to the length of this sequence.

Reference: Java.lang.StringBuilder.insert() Method

Question No: 59

Given:

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What is the result?

  1. Compilation fails

  2. The code compiles, but does not execute.

  3. Paildrome

  4. Wow

  5. Mom

Answer: B

Question No: 60

Consider following interface.

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Which of the following will create instance of Runnable type?

  1. Runnable run = 0 -gt; {System.out.println(quot;Runquot;);}

  2. Runnable run = 0 -gt; System.outprintlnfRunquot;);

  3. Runnable run = 0 gt; System.outprintlnfRunquot;);

  4. Runnable run = gt; System.ouLprintlnfRunquot;};

  5. None of the above.

Answer: A Explanation:

Option A is the correct answer.

To create we have used following method with LocalDate class; public static LocalDate of(intyear, int month, intdayOfMonth)

Here we need to remember that month is not zero based so if you pass 1 for month, then month will be January.

Then we have used period object of 1 day and add to date object which makes current date to next day, so final output is 2015-03-27. Hence option A is correct.

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