Oracle 1Z0-819 Java SE 11 Developer Exam Exam Practice Test Questions

• Question 1

  Which two statements are correct about try blocks? (Choose two.)

  • A try block can have more than one catch block.
  • A finally block in a try-with-resources statement executes before the resources declared are closed.
  • A finally block must be immediately placed after the try or catch blocks.
  • A try block must have a catch block and a finally block.
  • Catch blocks must be ordered from generic to specific exception types.

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• Question 2

  What makes Java dynamic?

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

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• Question 3

  Which interface in the java.util.function package will return a void return type?

  • Supplier
  • Predicate
  • Function
  • Consumer

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• Question 4

  Given the code fragment:Path currentFile = Paths.get(''/scratch/exam/temp.txt'');Path outputFile = Paths get(''/scratch/exam/new.txt'');Path directory = Paths.get(''/scratch/'');Files.copy(currentFile, outputFile);Files.copy(outputFile, directory);Files.delete (outputFile);The /scratch/exam/temp.txt file exists. The /scratch/exam/new.txt and /scratch/new.txt files do not exist.What is the result?

  • /scratch/exam/new.txt and /scratch/new.txt are deleted.
  • The program throws a FileaAlreadyExistsException.
  • The program throws a NoSuchFileException.
  • A copy of /scratch/exam/new.txt exists in the /scratch directory and /scratch/exam/new.txt is deleted.

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• Question 5

  Which describes a characteristic of setting up the Java development environment?

  • Setting up the Java development environment requires that you also install the JRE.
  • The Java development environment is set up for all operating systems by default.
  • You set up the Java development environment for a specific operating system when you install the JDK.
  • Setting up the Java development environment occurs when you install an IDE before the JDK.

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