Oracle Oracle Certifications 1Z0-808 Questions & Answers

• Question 191:

  int [] array = {1,2,3,4,5};

  for (int i: array) {

  if ( i < 2) {

  keyword1 ;

  }

  System.out.println(i);

  if ( i == 3) {

  keyword2 ;

  }}

  What should keyword1 and keyword2 be respectively, in oreder to produce output 2345?

  A. continue, break

  B. break, break

  C. break, continue

  D. continue, continue

  Correct Answer: D

• Question 192:

  Given the code fragments: Which code fragment, when inserted at line ni, enables the code to print Hank?

  

  A. checkAge (iList, ( ) -> p. get Age ( ) > 40);

  B. checkAge(iList, Person p -> p.getAge( ) > 40);

  C. checkAge (iList, p -> p.getAge ( ) > 40);

  D. checkAge(iList, (Person p) -> { p.getAge() > 40; });

  Correct Answer: C

• Question 193:

  Given: Which statement is true?

  

  A. Both p and s are accessible by obj.

  B. Only s is accessible by obj.

  C. Both r and s are accessible by obj.

  D. p, r, and s are accessible by obj.

  Correct Answer: B

• Question 194:

  Given:

  public class TestLoop {

  public static void main(String[] args) {

  int array[] = {0, 1, 2, 3, 4};

  int key = 3;

  for (int pos = 0; pos < array.length; ++pos) {

  if (array[pos] == key) {

  break;

  }

  }

  System.out.print("Found " + key + "at " + pos);

  }

  }

  What is the result?

  A. Found 3 at 2

  B. Found 3 at 3

  C. Compilation fails

  D. An exception is thrown at runtime

  Correct Answer: C

  Explanation: The following line does not compile: System.out.print("Found " + key + "at " + pos);

  The variable pos is undefined at this line, as its scope is only valid in the for loop. Any variables created inside of a loop are LOCAL TO THE LOOP.

• Question 195:

  Given:

  

  What is the result?

  A. hEllOjAvA!

  B. Hello java!

  C. Out of limits hEllOjAvA!

  D. Out of limits

  Correct Answer: C

• Question 196:

  Which two statements are true for a two-dimensional array of primitive data type?

  A. It cannot contain elements of different types.

  B. The length of each dimension must be the same.

  C. At the declaration time, the number of elements of the array in each dimension must be specified.

  D. All methods of the class object may be invoked on the two-dimensional array.

  Correct Answer: CD

  Explanation: http://stackoverflow.com/questions/12806739/is-an-array-a-primitive-type-or- an-object-orsomething-else-entirely

• Question 197:

  Given:

  public class Natural {

  private int i;

  void disp() {

  while (i <= 5) {

  for (int i=1; i <=5;) {

  System.out.print(i + " ");

  i++;

  }

  i++;

  }

  }

  public static void main(String[] args) {

  new Natural().disp();

  }

  }

  What is the result?

  A. Prints 1 2 3 4 5 once

  B. Prints 1 3 5 once

  C. Prints 1 2 3 4 5 five times

  D. Prints 1 2 3 4 5 six times

  E. Compilation fails

  Correct Answer: D

  Explanation: 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

• Question 198:

  Given the code fragment

  int var1 = -5;

  int var2 = var1--;

  int var3 = 0;

  if (var2 < 0) {

  var3 = var2++;

  } else {

  var3 = --var2;

  }

  System.out.println(var3);

  What is the result?

  A. ?6

  B. ?4

  C. ?5

  D. 5

  E. 4

  F. Compilation fails

  Correct Answer: C

• Question 199:

  Given:

  

  Which two code fragments are valid?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  E. Option E

  Correct Answer: BC

  Explanation: When an abstract class is subclassed, the subclass usually provides implementations for all of the abstract methods in its parent class (C). However, if it does not, then the subclass must also be declared abstract (B). Note: An abstract class is a class that is declared abstract--it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed.

• Question 200:

  Given the following code for the classes MyException and Test: What is the result?

  

  A. A

  B. B

  C. Either A or B

  D. A B

  E. A compile time error occurs at line n1

  Correct Answer: B