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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?
Given the definition of the Book class:
Which statement is true about the Book class?
Given:
and the code fragment:
What is the result?
What is true about the java.sql.Statement interface?
Given the code fragments:
and
Which two modifications enable to sort the elements of the emps list? (Choose two.)
and the code fragment?
What is the result?
Given the code fragments:
and
What is the result?
Given the code fragment:
List
values.stream ()
.map(n -> n*2)//line n1
.peek(System.out::print)//line n2
.count();
What is the result?
Given that /green.txt and /colors/yellow.txt are accessible, and the code fragment:
Path source = Paths.get(“/green.txt);
Path target = Paths.get(“/colors/yellow.txt);
Files.move(source, target, StandardCopyOption.ATOMIC_MOVE);
Files.delete(source);
Which statement is true?
Which two methods from the java.util.stream.Stream interface perform a reduction operation? (Choose two.)
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