1Z0-809 Free Practice Test

Which statement is true about java.time.Duration?

1. A. It tracks time zones.
2. B. It preserves daylight saving time.
3. C. It defines time-based values.
4. D. It defines date-based values.

Correct Answer: C

Which code fragment is required to load a JDBC 3.0 driver?

1. A. Connection con = Connection.getDriver (“jdbc:xyzdata://localhost:3306/EmployeeDB”);
2. B. Class.forName(“org.xyzdata.jdbc.NetworkDriver”);
3. C. Connection con = DriverManager.getConnection (“jdbc:xyzdata://localhost:3306/EmployeeDB”);
4. D. DriverManager.loadDriver (“org.xyzdata.jdbc.NetworkDriver”);

Correct Answer: B

Given the code fragment:
List values = Arrays.asList (1, 2, 3); values.stream ()
.map(n -> n*2) //line n1
.p eek(System.out::print) //line n2
.count();
What is the result?

1. A. 246
2. B. The code produces no output.
3. C. A compilation error occurs at line n1.
4. D. A compilation error occurs at line n2.

Correct Answer: A

Given:

and the code fragment:

Which modification enables the code fragment to print Speaker?

1. A. Implement Predicate in the Product.ProductFilter class and replace line n2 with .filter (p-> p.ProductFilter.test (p))
2. B. Replace line n1 with:public static boolean isAvailable (Product p) {
3. C. Replace line n2 with:.filter (p -> p.ProductFilter: :isAvailable (p))
4. D. Replace line n2 with:.filter (p -> Product: :ProductFilter: :isAvailable ())

Correct Answer: B

Given the code fragment:
String str = “Java is a programming language”; ToIntFunction indexVal = str: : indexOf; //line n1 int x = indexVal.applyAsInt(“Java”); //line n2
System.out.println(x); What is the result?

1. A. 1
2. B. A compilation error occurs at line n1.
3. C. A compilation error occurs at line n2.

Correct Answer: A