Given the code fragment:

Path file = Paths.get ("courses.txt"); // line n1

Assume the courses.txt is accessible.

Which code fragment can be inserted at line n1 to enable the code to print the content of the courses.txt file?

A. List fc = Files.list(file); fc.stream().forEach (s - > System.out.println(s));

B. Stream fc = Files.readAllLines (file); fc.forEach (s - > System.out.println(s));

C. List fc = readAllLines(file); fc.stream().forEach (s - > System.out.println(s));

D. Stream fc = Files.lines (file); fc.forEach (s - > System.out.println(s));

Given the content of /resourses/Message.properties:

welcome1="Good day!"

and given the code fragment:

Properties prop = new Properties ();

FileInputStream fis = new FileInputStream ("/resources/Message.properties");

prop.load(fis);

System.out.println(prop.getProperty("welcome1"));

System.out.println(prop.getProperty("welcome2", "Test"));//line n1

System.out.println(prop.getProperty("welcome3"));

What is the result?

A. Good day! Test followed by an Exception stack trace

B. Good day! followed by an Exception stack trace

C. Good day! Test null

D. A compilation error occurs at line n1.

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. An exception is thrown at runtime.

B. Compilation fails.

C. The code prints Error.

D. The code prints information about Item 110.

Given the code fragments:

class ThreadRunner implements Runnable {

public void run () { System.out.print ("Runnable") ; }

}

class ThreadCaller implements Callable {

Public String call () throws Exception {return "Callable"; )

}

and

ExecutorService es = Executors.newCachedThreadPool ();

Runnable r1 = new ThreadRunner ();

Callable c1 = new ThreadCaller ();

// line n1

es.shutdown();

Which code fragment can be inserted at line n1 to start r1 and c1 threads?

A. Future f1 = (Future) es.submit (r1); es.execute (c1);

B. es.execute (r1); Future f1 = es.execute (c1) ;

C. Future f1 = (Future) es.execute(r1); Future f2 = (Future) es.execute(c1);

D. es.submit(r1); Future f1 = es.submit (c1);

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 () { }

abstract void open ();

}

public interface Drawable {

public abstract void draw ();

}

Which statement is true?

A. Board does not compile.

B. Paper does not compile.

C. Frame does not compile.

D. Drawable does not compile.

E. All classes compile successfully.