Oracle 1Z0-808 Online Practice Questions and Exam Preparation

Oracle 1Z0-808 Online Questions & Answers

• Question 1:

  Given:

  

  What is the result?

  A. Null
  B. Compilation fails
  C. An exception is thrown at runtime
  C. An exception is thrown at runtime

• Question 2:

  Given:

  

  What is the result?

  A. c= b = false f = 0.0
  B. c = null b = true f = 0.0
  C. c = 0 b = false f = 0.0f
  D. c = null b = false f = 0.0F
  A. c= b = false f = 0.0

• Question 3:

  Given:

  

  And given the code fragment:

  

  What is the result?

  A. C2C2
  B. C1C2
  C. C1C1
  D. Compilation fails
  D. Compilation fails

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  Explanation/Reference:

• Question 4:

  Which three statements describe the object-oriented features of the Java language?

  A. Objects can be reused.
  B. A subclass can inherit from a superclass.
  C. Objects can share behaviors with other objects.
  D. A package must contain more than one class.
  E. Object is the root class of all other objects.
  F. A main method must be declared in every class.
  A. Objects can be reused.
  C. Objects can share behaviors with other objects.
  E. Object is the root class of all other objects.

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  Explanation/Reference:

• Question 5:

  Given the code fragment:

  

  What is the result?

  A. Compilation fails.
  B. 1 3 1 3
  C. 1 3 followed by an ArrayIndexOutOfBoundsException
  D. 1 3 1 3 0 0
  E. 1 3 5 7 1 3
  E. 1 3 5 7 1 3

• Question 6:

  Which three statements are true about the structure of a Java class? (Choose three.)

  A. A class cannot have the same name as its field.
  B. A public class must have a main method.
  C. A class can have final static methods.
  D. A class can have overloaded private constructors.
  E. Fields need to be initialized before use.
  F. Methods and fields are optional components of a class.
  C. A class can have final static methods.
  D. A class can have overloaded private constructors.
  F. Methods and fields are optional components of a class.

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  Explanation/Reference:

• Question 7:

  Given the code format:

  

  Which code fragment must be inserted at line 6 to enable the code to compile?

  A. DBConfiguration f; return f;
  B. Return DBConfiguration;
  C. Return new DBConfiguration;
  D. Retutn 0;
  B. Return DBConfiguration;

• Question 8:

  Given:

  

  Which constructor initializes the variable x3?

  A. Only the default constructor of class X
  B. Only the no-argument constructor of class Y
  C. Only the no-argument constructor of class Z
  D. Only the default constructor of object class
  C. Only the no-argument constructor of class Z

• Question 9:

  Given the code fragment: What is the result?

  

  A. [Robb, Rick, Bran]
  B. [Robb, Rick]
  C. [Robb, Bran, Rick, Bran]
  D. An exception is thrown at runtime.
  A. [Robb, Rick, Bran]

• Question 10:

  Given the code fragments:

  

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

  A. checkAge (iList, ( ) -> p. get Age ( ) > 40);
  B. checkAge(iList, Person p -> p.getAge( ) > 40);
  C. checkAge (iList, p -> p.getAge ( ) > 40);
  D. checkAge(iList, (Person p) -> { p.getAge() > 40; });
  C. checkAge (iList, p -> p.getAge ( ) > 40);