Updated Oracle - 1z1-809 Exam Flashcards

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1z1-809 Actual Test Answers & Exam 1z1-809 Certification Cost

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To pass the Oracle 1z1-809 Exam, candidates must have a thorough understanding of Java programming concepts and be able to apply them to real-world scenarios. They must also be familiar with Java SE 8 features such as Lambda expressions and the Stream API. Additionally, candidates should have experience with database development using JDBC and be able to implement localization and internationalization features in Java applications.

Oracle Java SE 8 Programmer II Sample Questions (Q17-Q22):

NEW QUESTION # 17
Given the code fragment:
public class FileThread implements Runnable {
String fName;
public FileThread(String fName) { this.fName = fName; }
public void run () System.out.println(fName);}
public static void main (String[] args) throws IOException, InterruptedException { ExecutorService executor = Executors.newCachedThreadPool(); Stream<Path> listOfFiles = Files.walk(Paths.get("Java Projects")); listOfFiles.forEach(line -> { executor.execute(new FileThread(line.getFileName().toString())); // line n1
});
executor.shutdown();
executor.awaitTermination(5, TimeUnit.DAYS);//
line n2
}
}
The Java Projects directory exists and contains a list of files.
What is the result?

A. A compilation error occurs at line n1.
B. The program prints files names sequentially.
C. The program throws a runtime exception at line n2.
D. The program prints files names concurrently.

Answer: D

NEW QUESTION # 18
Given:

What is the result?

A. Hi MyClass
B. Hi Interface-1
C. A compilation error occurs.
D. Hi Interface-2

Answer: A

NEW QUESTION # 19
Which statement is true about java.util.stream.Stream?

A. The execution mode of streams can be changed during processing.
B. A parallel stream is always faster than an equivalent sequential stream.
C. Streams are intended to modify the source data.
D. A stream cannot be consumed more than once.

Answer: A

NEW QUESTION # 20
Given:

and the code fragment:

What is the result?

A. An exception is thrown at line n2.
B. A compilation error occurs because the try block is declared without a catch or finally block.
C. 0
D. A compilation error occurs at line n1.

Answer: C

NEW QUESTION # 21
Given the records from the Employee table:

and given the code fragment:
try {
Connection conn = DriverManager.getConnection (URL, userName, passWord); Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE); st.execute("SELECT*FROM Employee"); ResultSet rs = st.getResultSet(); while (rs.next()) { if (rs.getInt(1) ==112) { rs.updateString(2, "Jack");
}
}
rs.absolute(2);
System.out.println(rs.getInt(1) + " " + rs.getString(2));
} catch (SQLException ex) {
System.out.println("Exception is raised");
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database accessible with the URL, userName, and passWord exists.
What is the result?

A. The Employee table is updated with the row:112 Jackand the program prints:112 Jack
B. The Employee table is not updated and the program prints:112 Jerry
C. The program prints Exception is raised.
D. The Employee table is updated with the row:112 Jackand the program prints:112 Jerry

Answer: B

NEW QUESTION # 22
......

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Updated Oracle - 1z1-809 Exam Flashcards

1z1-809 Actual Test Answers & Exam 1z1-809 Certification Cost

Oracle Java SE 8 Programmer II Sample Questions (Q17-Q22):

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