Oracle 1Z0-808 Online Practice Questions and Exam Preparation

Oracle 1Z0-808 Online Questions & Answers

• Question 271:

  Given this code for the classes MyException and Test:

  

  What is the result?

  A. A
  B. AB
  C. A compile time error occurs at line n1.
  D. B
  E. I
  E. I

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  Explanation/Reference:

• Question 272:

  Given the code fragment:

  

  Which modification enables the code fragment to print TrueDone?

  A. Replace line 5 With String result = "true"; Replace line 7 with case "true":
  B. Replace line 5 with boolean opt = l; Replace line 7 with case 1=
  C. At line 9, remove the break statement.
  D. Remove the default section.
  A. Replace line 5 With String result = "true"; Replace line 7 with case "true":

• Question 273:

  Given the following class:

  

  And given the following main method, located in another class:

  

  Which three lines, when inserted independently at line n1, cause the program to print a o balance?

  A. this.amount = 0;
  B. acct.setAmount(0);
  C. acct (0) ;
  D. acct.amount = 0;
  E. acct. getAmount () = 0;
  F. acct.changeAmount(0);
  G. acct.changeAmount(-acct.amount);
  H. acct.changeAmount(-acct.getAmount());
  B. acct.setAmount(0);
  D. acct.amount = 0;
  G. acct.changeAmount(-acct.amount);

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  Explanation/Reference:

• Question 274:

  Given:

  

  What is the result?

  A. myStr: 7007, myNum: 7007
  B. Error
  C. myStr: 9009, myNum: 7007
  D. myStr: 7007, myNum: 9009
  C. myStr: 9009, myNum: 7007

  ---

  Explanation/Reference:

  

• Question 275:

  Given the code fragment: List colors = new ArrayList(); colors.add("green"); colors.add("red"); colors.add("blue"); colors.add("yellow"); colors.remove(2); colors.add(3,"cyan"); System.out.print(colors); What is the result?

  A. [green, red, yellow, cyan]
  B. [green, blue, yellow, cyan]
  C. [green, red, cyan, yellow]
  D. Am IndexOutOfBoundsException is thrown at runtime
  B. [green, blue, yellow, cyan]

  ---

  Explanation/Reference:

• Question 276:

  Given: and the code fragment:

  

  S2 sobj = new S2(); sobj.display(10, 100);

  What is the result?

  A. Child 10 Child 100 Parent 100
  B. Parent 10 Child 10 Parent 1000
  C. Child 10 Parent 100 Parent 100
  D. A compile time error occurs.
  A. Child 10 Child 100 Parent 100

  ---

  Explanation/Reference:

  UAK94 provided us the source code, in their comment.

• Question 277:

  Given:

  

  Which statement is true?

  A. The program executes and prints: 500.0
  B. Commenting line 16 enables the program to print: Thank You! 500.0
  C. Commenting line 13 enables the program to print: Thank You! 500.0
  D. The program executes and prints: Thank You! 500.0
  B. Commenting line 16 enables the program to print: Thank You! 500.0

  ---

  Explanation/Reference:

  

• Question 278:

  Given:

  

  And given the code fragment:

  

  What is the result?

  A. Compilation fails at line n2.
  B. Compilation fails at line n1.
  C. 20:20
  D. 10:20
  C. 20:20

  ---

  Explanation/Reference:

  Answer is C.

  To test:

  class Vehicle {

  int x;

  Vehicle() {

  this(10); // line n1

  }

  Vehicle(int x) {

  this.x = x;

  }

  }

  class Car extends Vehicle {

  int y;

  Car() {

  super(10); // line n2

  }

  Car(int y) {

  super(y);

  this.y = y;

  }

  public String toString() {

  return super.x + ":" + this.y;

  }

  }

  public class Test {

  public static void main(String[] args) {

  Vehicle y = new Car(20);

  System.out.println(y);

  }

  }

• Question 279:

  Given the code fragments:

  

  Which code fragment, when inserted at line n1, enables the code to print Hank?

  

  A. B. C. D.
  C

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  Explanation/Reference:

• Question 280:

  Given:

  

  What is the result?

  A. simaple A
  B. Capital A
  C. simaple A default Capital A
  D. simaple A default
  E. Compilation fails.
  C. simaple A default Capital A

  ---

  Explanation/Reference:

  Here we have to use two ternary operators combined. SO first we can use to check first condition which is x > 10, as follows;

  x>10?">": (when condition false) Now we have to use another to check if x<10 as follows; x<10?V:"=" We can combine these two by putting last ternary statement in the false position of first ternary statement as follows;

  x>10?">":x<10?'<':"="

  https;//docs.oraclexom/javase/tutorial/java/nutsandbolts/if.html