Free Oracle 1Z0-815 Exam Dumps Questions & Answers

Given:

It is required that if p instanceof Pair then p.isValid() returns true.
Which is the smallest set of visibility changes to insure this requirement is met?

• A.  left and right must be private.
• B.  setLeft and setRight must be protected.
• C.  isValid must be public.
• D.  left, right, setLeft, and setRight must be private.

What is the name of the Java concept that uses access modifiers to protect variables and hide them within a class?

• A.  Inheritance
• B.  Abstraction
• C.  Instantiation
• D.  Encapsulation
• E.  Polymorphism

Given:

Which two lines of code when inserted in line 1 correctly modifies instance variables? (Choose two.)

• A.  cCount = setCCount(c);
• B.  aCount = a;
• C.  setGCount(g);
• D.  setCCount(c) = cCount;
• E.  tCount = tCount;

Given:

What is known about the Sportscar class?

• A.  The Sportscar subclass cannot override setTurbo method from the superclass Automobile.
• B.  The Sportscar class inherits the setTurbo method from the superclass Automobile.
• C.  The Sportscar class is a superclass that has more functionality than the Automobile class.
• D.  The Sportscar class is a subclass of Automobile and inherits its methods.

Given:

Which loop incurs a compile time error?

• A.  the loop starting line 11
• B.  the loop starting line 14
• C.  the loop starting line 7
• D.  the loop starting line 3