Oracle 1Z0-803 Online Practice Questions and Exam Preparation

Oracle 1Z0-803 Online Questions & Answers

• Question 101:

  int i, j=0;

  i = (3* 2 +4 +5 ) ;

  j = (3 * ((2+4) + 5));

  System.out.println("i:"+ i + "\nj":+j);

  What is the result?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B

• Question 102:

  Given:

  

  Which two code fragments are valid?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  B. Option B
  C. Option C

  ---

  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 103:

  View the exhibit:

  public class Student {

  public String name = "";

  public int age = 0;

  public String major = "Undeclared";

  public boolean fulltime = true;

  public void display() {

  System.out.println("Name: " + name + " Major: " + major); } public boolean isFullTime() { return fulltime;

  }

  }

  Given:

  Public class TestStudent {

  public static void main(String[] args) {

  Student bob = new Student ();

  bob.name = "Bob";

  bob.age = 18;

  bob.year = 1982;

  }

  }

  What is the result?

  A. year is set to 1982.
  B. bob.year is set to 1982
  C. A runtime error is generated.
  D. A compile time error is generated.
  D. A compile time error is generated.

• Question 104:

  Given the code fragment:

  

  What is the result?

  A. 28false29 true
  B. 285 < 429 true
  C. true true
  D. compilation fails
  C. true true

• Question 105:

  Given:

  

  A. Ym Xm2
  B. Ym Xm1
  C. Compilation fails
  D. A ClassCastException is thrown at runtime
  B. Ym Xm1

• Question 106:

  Given the code fragment:

  float x = 22.00f % 3.00f; int y = 22 % 3; System.out.print(x + ", "+ y);

  What is the result?

  A. 1.0, 1
  B. 1.0f, 1
  C. 7.33, 7
  D. Compilation fails
  E. An exception is thrown at runtime
  A. 1.0, 1

• Question 107:

  What is the proper way to defined a method that take two int values and returns their sum as an int value?

  A. int sum(int first, int second) { first + second; }
  B. int sum(int first, second) { return first + second; }
  C. sum(int first, int second) { return first + second; }
  D. int sum(int first, int second) { return first + second; }
  E. void sum (int first, int second) { return first + second; }
  D. int sum(int first, int second) { return first + second; }

• Question 108:

  Given: How many objects have been created when the line / / do complex stuff is reached?

  

  A. Two
  B. Three
  C. Four
  D. Six
  C. Four

• Question 109:

  Given the code fragment:

  

  What is the result?

  A. 20
  B. 25
  C. 29
  D. Compilation fails
  E. AnArrayIndexOutOfBoundsException is thrown at runtime
  A. 20

• Question 110:

  Given the code fragment:

  

  What is the result if the integer aVar is 9?

  A. 10 Hello world!
  B. 10 Hello universe!
  C. 9 Hello world!
  D. Compilation fails.
  C. 9 Hello world!