Oracle 1Z0-803 Online Practice Questions and Exam Preparation

Oracle 1Z0-803 Online Questions & Answers

• Question 111:

  Given:

  

  What is the result?

  A. Compilation fails
  B. The code compiles, but does not execute.
  C. Paildrome
  D. Wow
  E. Mom
  B. The code compiles, but does not execute.

• Question 112:

  Which three are bad practices?

  A. Checking for ArrayIndexoutofBoundsException when iterating through an array to determine when all elements have been visited
  B. Checking for Error and. If necessary, restarting the program to ensure that users are unaware problems
  C. Checking for FileNotFoundException to inform a user that a filename entered is not valid
  D. Checking for ArrayIndexoutofBoundsException and ensuring that the program can recover if one occur
  E. Checking for an IOException and ensuring that the program can recover if one occurs
  A. Checking for ArrayIndexoutofBoundsException when iterating through an array to determine when all elements have been visited
  B. Checking for Error and. If necessary, restarting the program to ensure that users are unaware problems
  D. Checking for ArrayIndexoutofBoundsException and ensuring that the program can recover if one occur

• Question 113:

  Given:

  

  What is the result?

  A. One
  B. Two
  C. Three
  D. Compilation fails
  D. Compilation fails

• Question 114:

  Given:

  class Base {

  // insert code here

  }

  public class Derived extends Base{

  public static void main(String[] args) {

  Derived obj = new Derived();

  obj.setNum(3);

  System.out.println("Square = " + obj.getNum() * obj.getNum()); }

  }

  Which two options, when inserted independently inside class Base, ensure that the class is being properly encapsulated and allow the program to execute and print the square of the number?

  A. private int num; public int getNum() { return num; } public void setNum(int num) { this.num = num; }
  B. public int num; protected public int getNum() { return num; } protected public void setNum(int num) { this.num = num; }
  C. private int num; public int getNum() { return num; } private void setNum(int num) { this.num = num; }
  D. protected int num; public int getNum() { return num; } public void setNum(int num) { this.num = num; }
  E. protected int num; private int getNum() { return num; } public void setNum(int num) { this.num = num; }
  A. private int num; public int getNum() { return num; } public void setNum(int num) { this.num = num; }
  D. protected int num; public int getNum() { return num; } public void setNum(int num) { this.num = num; }

  ---

  Incorrect:

  Not B: illegal combination of modifiers: protected and public not C: setNum method cannot be private.

  not E: getNum method cannot be private.

• Question 115:

  Given the fragment: What is the result?

  

  A. 14
  B. 15
  C. 24
  D. 25
  E. 34
  F. 35
  F. 35

  ---

  The two elements 3 and 4 (starting from position with index 2) are copied into position index 1 and 2 in the same array.

  After the arraycopy command the array looks like:

  {1, 3, 4, 4, 5};

  Then element with index 1 is printed: 3

  Then element with index 4 is printed: 5

  Note: The System class has an arraycopy method that you can use to efficiently copy data from one array into another:

  public static void arraycopy(Object src, int srcPos, Object dest, int destPos, int length) The two Object arguments specify the array to copy from and the array to copy to. The three int arguments specify the starting position in the source array,

  the starting position in the destination array, and the number of array elements to copy.

• Question 116:

  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
  D. continue, continue

• Question 117:

  A method doSomething () that has no exception handling code is modified to trail a method that throws a checked exception. Which two modifications, made independently, will allow the program to compile?

  A. Catch the exception in the method doSomething().
  B. Declare the exception to be thrown in the doSomething() method signature.
  C. Cast the exception to a RunTimeException in the doSomething() method.
  D. Catch the exception in the method that calls doSomething().
  A. Catch the exception in the method doSomething().
  B. Declare the exception to be thrown in the doSomething() method signature.

  ---

  Valid Java programming language code must honor the Catch or Specify Requirement. This means that code that might throw certain exceptions must be enclosed by either of the following:

  *

  A try statement that catches the exception. The try must provide a handler for the exception, as described in Catching and Handling Exceptions.

  *

  A method that specifies that it can throw the exception. The method must provide a throws clause that lists the exception, as described in Specifying the Exceptions Thrown by a Method. Code that fails to honor the Catch or Specify Requirement will not compile.

• Question 118:

  Given the class definitions:

  

  And the code fragment of the main() method,

  

  What is the result?

  A. Java Java Java
  B. Java Jeve va
  C. Java Jeve ve
  D. Compilation fails
  D. Compilation fails

• Question 119:

  Given the following code:

  

  What will make this code compile and run?

  A. Change line 2 to the following: Public int price
  B. Change line 4 to the following: int price = new simple ();
  C. Change line 4 to the following: Float price = new simple ();
  D. Change line 5 to the following: Price = 4f;
  E. Change line 5 to the following: price.price = 4;
  F. Change line 5 to the following: Price = (float) 4:
  G. Change line 5 to the following: Price = (Simple) 4;
  H. The code compiles and runs properly; no changes are necessary
  E. Change line 5 to the following: price.price = 4;

  ---

  price.price =4; is correct, not price=4;

  The attribute price of the instance must be set, not the instance itself.

• Question 120:

  Given a code fragment:

  

  What is the result?

  A. They match They real match
  B. They really match
  C. They match
  D. Nothing is printed to the screen
  B. They really match