EXPERTY DESIGNED 1Z0-809 PRACTICE TEST

Oracle 1Z0-809 Exam Questions
Total Questions: 469
Java SE 8 Programmer II
Updated On: Jun 23, 2025
Page : 1-47
Question 1

Given:

3
and the code fragment:
4
What is the result?

Options :
Answer: B

Question 2

Given:

Untitled1-page69-image101
From what threading problem does the program suffer?

Options :
Answer: B

Question 3

Given the code fragment:
Stream<Path> files = Files.walk(Paths.get(System.getProperty(“user.home”)));
 files.forEach (fName -> { //line n1
 try {
 Path aPath = fName.toAbsolutePath(); //line n2
 System.out.println(fName + “:”
 + Files.readAttributes(aPath,
Basic.File.Attributes.class).creationTime
());
 } catch (IOException ex) {
 ex.printStackTrace();
 });
What is the result?

Options :
Answer: A

Question 4

Given the code fragment:

9. Connection conn = DriveManager.getConnection(dbURL, userName, passWord);
10. String query = “SELECT id FROM Employee”;
11. try (Statement stmt = conn.createStatement()) {
12. ResultSet rs = stmt.executeQuery(query);
13. stmt.executeQuery(“SELECT id FROM Customer”);
14. while (rs.next()) {
15. //process the results
16. System.out.println(“Employee ID: “+ rs.getInt(“id”));
17. }
18. } catch (Exception e) {
19. System.out.println (“Error”);
20. }
Assume that:
 The required database driver is configured in the classpath.
 The appropriate database is accessible with the dbURL, userName, and passWord exists.
 The Employee and Customer tables are available and each table has id column with a few records and
the SQL queries are valid.
What is the result of compiling and executing this code fragment?

Options :
Answer: C

Question 5

Given the code fragment:

Untitled1-page69-image23
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWord exists
The Employee table has a column ID of type integer and the SQL query matches one record.
What is the result?

Options :
Answer: A

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