Given:

What is the result?

• A.JoeMarry
• B.Joenull
• C.nullnull
• D.nullMary

Correct Answer: D

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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?

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

Correct Answer: C

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Given the code fragment:

What is the result?

• A.false true true
• B.true false false
• C.false false true
• D.false true false

Correct Answer: D

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Given:

You want the code to produce this output:
John
Joe
Jane
Which code fragment should be inserted on line 1 and line 2 to produce the output?

• A.Insert Comparator<Person> on line 1.
  Insert
  public int compareTo(Person person) {
  return person.name.compareTo(this.name);
  }
  on line 2.
• B.Insert Comparable<Person> on line 1.
  Insert
  public int compare(Person p1, Person p2) {
  return p1.name.compare(p2.name);
  }
  on line 2.
• C.Insert Comparator<Person> on line 1.
  Insert
  public int compare(Person person) {
  return person.name.compare(this.name);
  }
  on line 2.
• D.Insert Comparator<Person> on line 1.
  Insert
  public int compare(Person p1, Person p2) {
  return p1.name.compare(p2.name);
  }
  on line 2.

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What makes Java dynamic?

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

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