Oracle Oracle Database 1Z0-808 Questions & Answers

• Question 381:

  Given:

  class Mid {

  public int findMid(int n1, int n2) {

  return (n1 + n2) / 2;

  }

  }

  public class Calc extends Mid {

  public static void main(String[] args) {

  int n1 = 22, n2 = 2;

  // insert code here

  System.out.print(n3);

  }

  }

  Which two code fragments, when inserted at // insert code here, enable the code to compile and print 12?

  A. Calc c = new Calc(); int n3 = c.findMid(n1,n2);

  B. int n3 = super.findMid(n1,n3);

  C. Calc c = new Mid(); int n3 = c.findMid(n1, n2);

  D. Mid m1 = new Calc(); int n3 = m1.findMid(n1, n2);

  E. int n3 = Calc.findMid(n1, n2);

  Correct Answer: AD

  Incorrect: Not B: circular definition of n3. Not C: Compilation error. line Calc c = new Mid(); required: Calc found: Mid Not E: Compilation error. line int n3 = Calc.findMid(n1, n2); non-static method findMid(int,int) cannot be referenced from a static context

• Question 382:

  Given the code fragment:

  

  What is the result?

  A. 10 : 10

  B. 5 : 5

  C. 5 : 10

  D. Compilation fails

  Correct Answer: A

• Question 383:

  Given:

  

  What is the result?

  A. box B. nbo

  C. bo

  D. nb

  E. An exception is thrown at runtime

  Correct Answer: E

• Question 384:

  Which three are advantages of the Java exception mechanism?

  A. Improves the program structure because the error handling code is separated from the normal program function

  B. Provides a set of standard exceptions that covers all the possible errors

  C. Improves the program structure because the programmer can choose where to handle exceptions

  D. Improves the program structure because exceptions must be handled in the method in which they occurred

  E. Allows the creation of new exceptions that are tailored to the particular program being created

  Correct Answer: ACE

• Question 385:

  Given the code fragment:

  

  What is the result?

  A. Jesse 25 Walter 52

  B. Compilation fails only at line n1

  C. Compilation fails only at line n2

  D. Compilation fails at both line n1 and line n2

  Correct Answer: D