Oracle 1Z0-803 Online Practice Questions and Exam Preparation

Oracle 1Z0-803 Online Questions & Answers

• Question 31:

  Given: What is the result?

  

  A. 0 Done
  B. First Exception Done
  C. Second Exception
  D. Done Third Exception
  E. Third Exception
  B. First Exception Done

• Question 32:

  Given:

  

  Which code fragment, when inserted at line 9, enables the code to print true?

  A. String str2 = str1; B. String str2 = new string (str1);
  C. String str2 = sb1.toString();
  D. String str2 = "Duke";
  B

• Question 33:

  Given the code fragment:

  

  What could expression1 and expression2 be, respectively, in order to produce output 8, 16?

  A. + +a, - -b
  B. + +a, b-
  C. A+ +, - - b
  D. A + +, b -
  D. A + +, b -

• Question 34:

  Given:

  package p1;

  public class Test {

  static double dvalue;

  static Test ref;

  public static void main(String[] args) {

  System.out.println(ref);

  System.out.println(dvalue);

  }

  }

  What is the result?

  A. p1.Test.class 0.0
  B. 0.000000
  C. Null 0.0
  D. Compilation fails
  E. A NullPointerException is thrown at runtime
  C. Null 0.0

  ---

  null

  0.0

• Question 35:

  Given:

  

  What is the result?

  D. Compilation fails
  B

  ---

  table.length is 3. So the do-while loop will run 3 times with ii=0, ii=1 and ii=2. The second while statement will break the do-loop when ii = 3. Note: The Java programming language provides a do-while statement, which can be expressed as

  follows:

  do {

  statement(s)

  } while (expression);

• Question 36:

  You are writing a method that is declared not to return a value. Which two are permitted in the method body?

  A. omission of the return statement
  B. return null;
  C. return void;
  D. return;
  A. omission of the return statement
  D. return;

  ---

  Any method declared void doesn't return a value. It does not need to contain a return statement, but it may do so. In such a case, a return statement can be used to branch out of a control flow block and exit the method and is simply used like

  this:

  return;

• Question 37:

  Given:

  

  What should statement1, statement2, and statement3, be respectively, in order to produce the result?

  Shape: constructor Square: foo Shape: foo

  

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

  ---

  Incorrect answers:

  A: Produces Shape: constructor Square: constructor Square: foo Shape: foo

  B: Produces Shape: constructor Square: constructor Square: foo Square: foo

  C: Produces Shape: constructor Shape: foo Square: foo

  E: Produces Shape: constructor Shape: foo Shape: foo

• Question 38:

  Given the code fragment:

  

  What is the result?

  A. 10 8 6 4 2 0
  B. 10 8 6 4 2
  C. AnArithmeticException is thrown at runtime
  D. The program goes into an infinite loop outputting: 10 8 6 4 2 0. . .
  E. Compilation fails
  B. 10 8 6 4 2

• Question 39:

  Given:

  

  What is the result?

  A. 2
  B. 2
  C. null
  D. an infinite loop
  E. compilation fails
  E. compilation fails

  ---

  The line while (--ii); will cause the compilation to fail.

  ii is not a boolean value.

  A correct line would be while (--ii>0);

• Question 40:

  Given:

  public class Test {

  public static void main(String[] args) {

  int ax = 10, az = 30;

  int aw = 1, ay = 1;

  try {

  aw = ax % 2;

  ay = az / aw;

  } catch (ArithmeticException e1) {

  System.out.println("Invalid Divisor");

  } catch (Exception e2) {

  aw = 1;

  System.out.println("Divisor Changed");

  }

  ay = az /aw; // Line 14

  System.out.println("Succesful Division " + ay);

  }

  }

  What is the result?

  A. Invalid Divisor Divisor Changed Successful Division 30
  B. Invalid Divisor Successful Division 30
  C. Invalid Divisor Exception in thread "main" java.lang.ArithmeticException: / by zero at test.Teagle.main(Teagle.java:14)
  D. Invalid Divisor Exception in thread "main" java.lang.ArithmeticException: / by zero at test.Teagle.main(Teagle.java:14) Successful Division 1
  C. Invalid Divisor Exception in thread "main" java.lang.ArithmeticException: / by zero at test.Teagle.main(Teagle.java:14)