Oracle 1Z0-819 Online Practice Questions and Exam Preparation

Oracle 1Z0-819 Online Questions & Answers

• Question 101:

  Given the code fragment:

  

  You want to display the value of currency as $100.00. Which code inserted on line 1 will accomplish this?

  A. NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();
  B. NumberFormat formatter = NumberFormat.getCurrency(locale);
  C. NumberFormat formatter = NumberFormat.getInstance(locale);
  D. NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);
  D. NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);

• Question 102:

  Given:

  

  and omitting the throws FooException clause results in a compilation error. Which statement is true about FooException?

  A. FooException is a subclass of RuntimeError.
  B. FooException is unchecked.
  C. The body of foo can only throw FooException.
  D. The body of foo can throw FooException or one of its subclasses.
  D. The body of foo can throw FooException or one of its subclasses.

• Question 103:

  Given:

  jdeps -jdkinternals C:\workspace4\SimpleSecurity\jar\classes.jar

  Which describes the expected output?

  A. jdeps lists the module dependencies and the package names of all referenced JDK internal APIs. If any are found, the suggested replacements are output in the console.
  B. jdeps outputs an error message that the -jdkinternals option requires either the - summary or the - verbose options to output to the console.
  C. The -jdkinternals option analyzes all classes in the .jar and prints all class-level dependencies.
  D. The -jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console.
  D. The -jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console.

• Question 104:

  Given:

  

  What code inserted into class C would allow it to compile?

  A. public void x() { } public void z() { }
  B. public void x() { } protected void y() { super.y(); } public void z() { }
  C. void x() { } public void y() { } public void z() { }
  D. void x() { super.y(); } public void z() { }
  E. void x() { } public void z() { }
  A. public void x() { } public void z() { }

• Question 105:

  A company has an existing sales application using a Java 8 jar file containing packages:

  com.company.customer;

  com.company.customer.orders;

  com.company.customer.info;

  com.company.sales;

  com.company.sales.leads;

  com.company.sales.closed;

  com.company.orders;

  com.company.orders.pending;

  com.company.orders.shipped.

  To modularize this jar file into three modules, customer, sales, and orders, which module- info.java would be correct?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 106:

  Given:

  

  Which code fragment added to line 1 enables the code to compile and print Hello Joe?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 107:

  Given: A. Option A

  

  B. Option B
  C. Option C
  D. Option D
  E. Option E
  F. Option F
  A

• Question 108:

  Given:

  

  What is the output?

  A. A compilation error is thrown.
  B. Message from Copier: Attempt00
  C. Message from Abstract Copier: Attempt00
  D. A runtime error is thrown.
  A. A compilation error is thrown.

• Question 109:

  Given the code fragment:

  Path source = Paths.get("/repo/a/a.txt");

  Path destination = Paths.get("/repo");

  Files.move(source, destination); // line 1

  Files.delete (source); // line 2

  Assuming the source file and destination folder exist, what Is the result?

  A. A java.nio.file.FileAlreadyExistsException is thrown on line 1.
  B. A java.nio.file.NoSuchFileException is thrown on line 2.
  C. A copy of /repo/a/a.txt is moved to the /repo directory and /repo/a/a.txt is deleted.
  D. a.txt is renamed repo.
  C. A copy of /repo/a/a.txt is moved to the /repo directory and /repo/a/a.txt is deleted.

• Question 110:

  Given:

  

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

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