[Free] 2018(Mar) EnsurePass Passguide Oracle 1z0-808 Dumps with VCE and PDF 21-30

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Java SE 8 Programmer I

Question No: 21

Given:

Ensurepass 2018 PDF and VCE

What is result?

  1. Successful

  2. Unsuccessful

  3. Compilation fails

  4. An exception is thrown at runtime

Answer: C

Question No: 22

Given:

Ensurepass 2018 PDF and VCE

What is the result?

  1. int main 1

  2. Object main 1

  3. String main 1

  4. Compilation fails

  5. An exception is thrown at runtime

Answer: C

Question No: 23

Which of the following can fill in the blank in this code to make it compile?

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  1. abstract

  2. public

  3. default

  4. It will not compile with any as interfaces cannot have non abstract methods.

  5. It will compile without filling the blank.

Answer: C Explanation:

From Java SE 8, we can use static and/or default methods in interfaces, but they should be non abstract methods. SO in this case using default in blank is completely legal. Hence

option C is correct.

Option A is incorrect as given method is not abstract, so can#39;t use abstract there. Options B and E are incorrect as we can#39;t have non abstract method interface if they are not default or static. https;//docs.oraclexom/javase/tutorial/java/Iandl/defaultmethods.html

Question No: 24

Given the code fragment:

Ensurepass 2018 PDF and VCE

Which code fragment, when inserted at line n1, enables the App class to print Equal?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: B

Question No: 25

Given the content of three files:

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Which statement is true? Which statement is true?

  1. Only the A.Java file compiles successfully.

  2. Only the B.java file compiles successfully.

  3. Only the C.java file compiles successfully.

  4. The A.Java and B.java files compile successfully.

  5. The B.java and C.java files compile successfully.

  6. The A.Java and C.java files compile successfully.

Answer: A

Explanation: In class B.Java doStuff() has access modifier with variable name which is not

allowed. C.Java class name is different than file name. Only private classes can have different names than file names

Question No: 26

Given:

public class Equal {

public static void main(String[] args) { String str1 = quot;Javaquot;;

String[] str2 = {quot;Jquot;,quot;aquot;,quot;vquot;,quot;aquot;}; String str3 = quot;quot;;

for (String str : str2) { str3 = str3 str;

}

boolean b1 = (str1 == str3); boolean b2 = (str1.equals(str3)); System.out.print(b1 quot;, quot; b2);

}

What is the result?

  1. true, false

  2. false, true

  3. true, true

  4. false, false

Answer: B

Explanation: == strict equality. equals compare state, not identity.

Question No: 27

Given the code fragment: List colors = new ArrayList(); colors.add(quot;greenquot;); colors.add(quot;redquot;);

colors.add(quot;bluequot;); colors.add(quot;yellowquot;); colors.remove(2); colors.add(3,quot;cyanquot;); System.out.print(colors);

What is the result?

  1. [green, red, yellow, cyan]

  2. [green, blue, yellow, cyan]

  3. [green, red, cyan, yellow]

  4. Am IndexOutOfBoundsException is thrown at runtime

Answer: A

Explanation: First the list [green, red, blue, yellow] is build. The blue element is removed:

[green, red, yellow]

Finally the element cyan is added at then end of the list (index 3). [green, red, yellow, cyan]

Question No: 28

Given:

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And given the code fragment:

Ensurepass 2018 PDF and VCE

What is the result?

  1. 4W 100 Auto 4W 150 Manual

  2. Null 0 Auto 4W 150 Manual

  3. Compilation fails only at line n1

  4. Compilation fails only at line n2

  5. Compilation fails at both line n1 and line n2

Answer: E Explanation:

On line n1 implicit call to parameterized constructor is missing and n2 this() must be the first line.

Question No: 29

Given:

Ensurepass 2018 PDF and VCE

What is the result?

  1. box

  2. nbo

  3. bo

  4. nb

  5. An exception is thrown at runtime

Answer: E

Question No: 30

Given the code fragment:

Ensurepass 2018 PDF and VCE

What is the result?

  1. Jesse 25 Walter 52

  2. Compilation fails only at line n1

  3. Compilation fails only at line n2

  4. Compilation fails at both line n1 and line n2

Answer: D

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