Oracle 1Z0-815 Online Practice Questions and Exam Preparation

Oracle 1Z0-815 Online Questions & Answers

• Question 51:

  Given:

  

  What is the result?

  A. compilation error
  B. 0 5
  C. 6 13
  D. 5 12
  A. compilation error

  ---

  

• Question 52:

  Given:

  

  What is the result?

  A. watermelon orange lemon grape apricot apple
  B. nothing
  C. apple apricot grape lemon orange watermelon
  D. apple orange grape lemon apricot watermelon
  A. watermelon orange lemon grape apricot apple

  ---

  

• Question 53:

  Which two statements are true about Java modules? (Choose two.)

  A. Modular jars loaded from --module-path are automatic modules.
  B. Any named module can directly access all classes in an automatic module.
  C. Classes found in –classpath are part of an unnamed module.
  D. Modular jars loaded from –classpath are automatic modules.
  E. If a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.
  A. Modular jars loaded from --module-path are automatic modules.
  C. Classes found in –classpath are part of an unnamed module.

  ---

  Reference: http://tutorials.jenkov.com/java/modules.html

• Question 54:

  Given:

  

  What is the result?

  A. nothing
  B. It fails to compile.
  D. A java.lang.IllegalArgumentException is thrown.
  E. 10
  B. It fails to compile.

  ---

  

• Question 55:

  Given:

  

  What is the result?

  A. 42
  B. The compilation fails due to an error in line 4.
  C. 17
  D. The compilation fails due to an error in line 3.
  E. The compilation fails due to an error in line 2.
  F. The compilation fails due to an error in line 1.
  G. The compilation fails due to an error in line 5.
  B. The compilation fails due to an error in line 4.

  ---

  

• Question 56:

  Given:

  

  Which loop incurs a compile time error?

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

• Question 57:

  What makes Java dynamic?

  A. At runtime, classes are loaded as needed, and new code modules can be loaded on demand.
  B. The runtime can process machine language sources as well as executables from different language compilers.
  C. The Java compiler uses reflection to test if class methods are supported by resources of a target platform.
  D. The Java compiler preprocesses classes to run on specific target platforms.
  A. At runtime, classes are loaded as needed, and new code modules can be loaded on demand.

• Question 58:

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

• Question 59:

  Given:

  

  Which two statements are valid to be written in this interface? (Choose two.)

  A. public abstract void methodB();
  B. final void methodG(){ System.out.println("G"); }
  C. private abstract void methodC();
  D. public String methodD();
  E. public int x;
  F. final void methodE();
  G. public void methodF(){ System.out.println("F"); }
  B. final void methodG(){ System.out.println("G"); }
  G. public void methodF(){ System.out.println("F"); }

• Question 60:

  Given: What is the result?

  

  A. null
  B. Joe Bloggs
  C. The compilation fails due to an error in line 1.
  D. p1
  C. The compilation fails due to an error in line 1.

  ---