Online Access Free 1z1-809 Exam Questions

Given:

and the code fragment:

The threads t1 and t2 execute asynchronously and possibly prints ABCA or AACB.
You have been asked to modify the code to make the threads execute synchronously and prints ABC.
Which modification meets the requirement?

• A.start the threads t1 and t2 within a synchronized block.
• B.Replace line n2 with:volatile int count = 0;
• C.Replace line n1 with:private synchronized int count = 0;
• D.Replace line n2 with:public synchronized void run () {

Given:
public class Canvas implements Drawable {
public void draw () { }
}
public abstract class Board extends Canvas { }
public class Paper extends Canvas {
protected void draw (int color) { }
}
public class Frame extends Canvas implements Drawable {
public void resize () { }
}
public interface Drawable {
public abstract void draw ();
}
Which statement is true?

• A.Drawable does not compile.
• B.Paper does not compile.
• C.All classes compile successfully.
• D.Frame does not compile.
• E.Board does not compile.

Given:
Item table
* ID, INTEGER: PK
* DESCRIP, VARCHAR(100)
* PRICE, REAL
* QUANTITY< INTEGER
And given the code fragment:
9. try {
10.Connection conn = DriveManager.getConnection(dbURL, username, password);
11. String query = "Select * FROM Item WHERE ID = 110";
12. Statement stmt = conn.createStatement();
13. ResultSet rs = stmt.executeQuery(query);
14.while(rs.next()) {
15.System.out.println("ID:" + rs.getInt("Id"));
16.System.out.println("Description:" + rs.getString("Descrip"));
17.System.out.println("Price:" + rs.getDouble("Price"));
18. System.out.println(Quantity:" + rs.getInt("Quantity"));
19.}
20. } catch (SQLException se) {
21. System.out.println("Error");
22. }
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the dbURL, userName, and passWord exists.
The SQL query is valid.
What is the result?

• A.Compilation fails.
• B.The code prints information about Item 110.
• C.The code prints Error.
• D.An exception is thrown at runtime.

Given the code fragment:
List<String> codes = Arrays.asList ("DOC", "MPEG", "JPEG");
codes.forEach (c -> System.out.print(c + " "));
String fmt = codes.stream()
.filter (s-> s.contains ("PEG"))
.reduce((s, t) -> s + t).get();
System.out.println("\n" + fmt);
What is the result?

• A.MPEGJPEGMPEGJPEG
• B.DOC MPEG JPEGMPEGJPEG
• C.The order of the output is unpredictable.
• D.DOC MPEG MPEGJPEGMPEGMPEGJPEG

Given the code fragment:
Path p1 = Paths.get("/Pics/MyPic.jpeg");
System.out.println (p1.getNameCount() +
":" + p1.getName(1) +
":" + p1.getFileName());
Assume that the Pics directory does NOT exist.
What is the result?

• A.1:Pics:/Pics/ MyPic.jpeg
• B.An exception is thrown at run time.
• C.2:Pics: MyPic.jpeg
• D.2:MyPic.jpeg: MyPic.jpeg