Oracle Oracle Database 1Z0-808 Questions & Answers

• Question 371:

  Given the for loop construct:

  for ( expr1 ; expr2 ; expr3 ) {

  statement;

  }

  Which two statements are true?

  A. This is not the only valid for loop construct; there exits another form of for loop constructor.

  B. The expression expr1 is optional. it initializes the loop and is evaluated once, as the loop begin.

  C. When expr2 evaluates to false, the loop terminates. It is evaluated only after each iteration through the loop.

  D. The expression expr3 must be present. It is evaluated after each iteration through the loop.

  Correct Answer: BC

  The for statement have this forms:

  for (init-stmt; condition; next-stmt) {

  body

  }

  There are three clauses in the for statement.

  The init-stmt statement is done before the loop is started, usually to initialize an iteration variable.

  The condition expression is tested before each time the loop is done. The loop isn't executed if the boolean

  expression is false (the same as the while loop). The next-stmt statement is done after the body is

  executed. It typically increments an iteration variable.

• Question 372:

  Which three statements are true about the structure of a Java class?

  A. A class can have only one private constructor.

  B. A method can have the same name as a field.

  C. A class can have overloaded static methods.

  D. A public class must have a main method.

  E. The methods are mandatory components of a class.

  F. The fields need not be initialized before use.

  Correct Answer: BCD

• Question 373:

  View the exhibit.

  

  Given the code fragment:

  

  Which change enables the code to print the following?

  James age: 20 Williams age: 32

  A. Replacing line 5 with public static void main (String [] args) throws MissingInfoException, AgeOutofRangeException {

  B. Replacing line 5 with public static void main (String [] args) throws.Exception {

  C. Enclosing line 6 and line 7 within a try block and adding: catch(Exception e1) { //code goes here} catch (missingInfoException e2) { //code goes here} catch (AgeOutofRangeException e3) {//code goes here}

  D. Enclosing line 6 and line 7 within a try block and adding: catch (missingInfoException e2) { //code goes here} catch (AgeOutofRangeException e3) {//code goes here}

  Correct Answer: C

• Question 374:

  Given the code fragment:

  public static void main(String[] args) {

  int iArray[] = {65, 68, 69};

  iArray[2] = iArray[0];

  iArray[0] = iArray[1];

  iArray[1] = iArray[2];

  for (int element : iArray) {

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

  }

  A. 68, 65, 69

  B. 68, 65, 65

  C. 65, 68, 65

  D. 65, 68, 69

  E. Compilation fails

  Correct Answer: B

• Question 375:

  Given:

  public class Test {

  public static void main(String[] args) {

  int day = 1;

  switch (day) {

  case "7": System.out.print("Uranus");

  case "6": System.out.print("Saturn");

  case "1": System.out.print("Mercury");

  case "2": System.out.print("Venus");

  case "3": System.out.print("Earth");

  case "4": System.out.print("Mars");

  case "5": System.out.print("Jupiter");

  }

  }

  }

  Which two modifications, made independently, enable the code to compile and run?

  A. Adding a break statement after each print statement

  B. Adding a default section within the switch code-block

  C. Changing the string literals in each case label to integer

  D. Changing the type of the variable day to String

  E. Arranging the case labels in ascending order

  Correct Answer: AC

  Explanation: The following will work fine:

  public class Test {

  public static void main(String[] args) {

  int day = 1;

  switch (day) {

  case 7: System.out.print("Uranus"); break;

  case 6: System.out.print("Saturn"); break;

  case 1: System.out.print("Mercury"); break;

  case 2: System.out.print("Venus"); break;

  case 3: System.out.print("Earth"); break;

  case 4: System.out.print("Mars"); break;

  case 5: System.out.print("Jupiter"); break;

  }

  }

  }

• Question 376:

  Given: What is the result?

  

  A. 1

  B. 1

  C. 2

  D. Compilation fails

  E. The loop executes infinite times

  Correct Answer: E

• Question 377:

  Given the code fragment:

  

  Assume that the system date is June 20, 2014. What is the result?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: D

• Question 378:

  Given the code fragment:

  

  What is the result?

  A. 20

  B. 25

  C. 29

  D. Compilation fails

  E. AnArrayIndexOutOfBoundsException is thrown at runtime

  Correct Answer: A

• Question 379:

  Given the code fragment:

  

  What is the result?

  A. May 04, 2014T00:00:00.000

  B. 2014-05-04T00:00: 00. 000

  C. 5/4/14T00:00:00.000

  D. An exception is thrown at runtime.

  Correct Answer: D

  java.time.temporal.UnsupportedTemporalTypeException: Unsupported field: HourOfDay

• Question 380:

  Given the code fragment:

  

  And given the requirements:

  If the value of the qty variable is greater than or equal to 90, discount = 0.5 If the value of the qty variable is between 80 and 90, discount = 0.2 Which two code fragments can be independently placed at line n1 to meet the requirements?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  E. Option E

  Correct Answer: AC