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Oracle Java SE 8 Programmer II Sample Questions (Q185-Q190):

NEW QUESTION # 185
Given the structure of the STUDENT table:
Student (id INTEGER, name VARCHAR)
Given:
public class Test {
static Connection newConnection =null;
public static Connection get DBConnection () throws SQLException {
try (Connection con = DriveManager.getConnection(URL, username, password)) { newConnection = con;
}
return newConnection;
}
public static void main (String [] args) throws SQLException {
get DBConnection ();
Statement st = newConnection.createStatement();
st.executeUpdate("INSERT INTO student VALUES (102, 'Kelvin')");
}
}
Assume that:
The required database driver is configured in the classpath.
The appropriate database is accessible with the URL, userName, and passWord exists.
The SQL query is valid.
What is the result?

A. The program executes successfully and the STUDENT table is updated with one record.
B. A NullPointerException is thrown as runtime.
C. The program executes successfully and the STUDENT table is NOT updated with any record.
D. A SQLException is thrown as runtime.

Answer: B

NEW QUESTION # 186
Given:

and the code fragment:

What is the result?
true

A. true
false
B. true
false
C. false
D. false
true

Answer: C

NEW QUESTION # 187
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. Board does not compile.
C. Frame does not compile.
D. All classes compile successfully.
E. Paper does not compile.

Answer: E

NEW QUESTION # 188
Given:
class Bird {
public void fly () { System.out.print("Can fly"); }
}
class Penguin extends Bird {
public void fly () { System.out.print("Cannot fly"); }
}
and the code fragment:
class Birdie {
public static void main (String [ ] args) {
fly( ( ) -> new Bird ( ));
fly (Penguin : : new);
}
/* line n1 */
}
Which code fragment, when inserted at line n1, enables the Birdie class to compile?

A. static void fly (Consumer<Bird> bird) {
bird :: fly ();
}
B. static void fly (Supplier<Bird> bird) {
bird.get( ) fly ();
}
C. static void fly (Supplier<? extends Bird> bird) {
LOST
D. static void fly (Consumer<? extends Bird> bird) {
bird.accept( ) fly ();
}

Answer: B

Explanation:
Explanation
NOTE: Very confusing question. There is no logic in the options.

NEW QUESTION # 189
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. es.submit(r1);Future<String> f1 = es.submit (c1);
B. Future<String> f1 = (Future<String>) es.execute(r1);Future<String> f2 = (Future<String>) es.execute(c1);
C. es.execute (r1);Future<String> f1 = es.execute (c1) ;
D. Future<String> f1 = (Future<String>) es.submit (r1);es.execute (c1);

Answer: A

NEW QUESTION # 190
......

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