Help with these!!!!

Question

hi,
im doing these questions, im preparing for a test, and im not sure if my answers are correct or not, please help me find my errors:
1- Which of the following methods must be over-ridden in order to tell the system how to execute a Thread?
(A)     thread()
(B)     execute()
(C)     start()
(D)     run()
2- Which of the following is a correct event handling method?
(A)          mousePressed(MouseEvent e){}
(B)          MousePressed(MouseClick e){}
(C)          functionKey(KeyPress k){}
(D) ComponentAdded(keyPress e){}
(3) A monitor called mon has 5 threads in its waiting pool; all these waiting threads have the same priority. One of the threads is thread1. How can you notify thread1 so that it alone moves from Waiting state to Ready State?
(A) Execute notify(thread1); from within synchronized code of mon.
(B) Execute mon.notify(thread1); from synchronized code of any
object.
(C) Execute thread1.notify(); from any code(synchronized or not) of
any object.
(D) You cannot specify which thread will get notified.
(4) Which of the following best describes the use of the synchronized
keyword?
(A) Allows two processes to run in parallel but to communicate with
each other.
(B) Ensures only one thread at a time may access a method or object.
(C) Ensures that two or more processes will start and end at the same
time.
(D) Ensures that two or more Threads will start and end at the same time.
(5) How can you retrieve a circle?s radius value that?s passed to an applet?
(A)
public void init() {
String s = getParameter("radius");
doSomethingWithRadius(s); }
(B)
public static void main(String[] args) {
String s = getParameter("radius");
DoSomethingWithRadius(s); }
(C)
public void init() {
int radius = getParameter("radius");
doSomethingWithRadius(radius); }
(D)
public void init() {
int radius = getParameter();
doSomethingWithRadius(radius); }
true/false
1- The method drawRect(int a, int b, int c, int d) defined in
java.awt draws the outline of a rectangle with a, b being the x,y coordinates of top left corner, and c,d being the x,y co-ordinates of the
bottom right corner.
TRUE
2- There is no statement in Java to free storage.
FALSE //finalize() is used
These are some practice questions, since im preparing for a test. Once again im hoping that you guys may help me figure out if my answers are correct or not.
Thanks in advance

Answer 1

>
1- Which of the following methods must be over-ridden
in order to tell the system how to execute a Thread?
(A)     thread()
(B)     execute()
(C)     start()
(D)     run()Wrong. This was a particularl bad choice since that method doesn't even exist.
2- Which of the following is a correct event handling
method?
(A)          mousePressed(MouseEvent e){}
(B)          MousePressed(MouseClick e){}
(C)          functionKey(KeyPress k){}
(D)
omponentAdded(keyPress e){}
Wrong
>
>
(3) A monitor called mon has 5 threads in its waiting
pool; all these waiting threads have the same
priority. One of the threads is thread1. How can you
notify thread1 so that it alone moves from Waiting
state to Ready State?
(A) Execute notify(thread1); from within
synchronized code of mon.
(B) Execute mon.notify(thread1); from synchronized
code of any
object.
(C) Execute thread1.notify(); from any
code(synchronized or not) of
any object.
(D) You cannot specify which thread will get
notified.Please consider reading the API and the threading tutorial before making wild guesses.
>
(4) Which of the following best describes the use of
the synchronized
keyword?
(A) Allows two processes to run in parallel but to
communicate with
each other.
(B) Ensures only one thread at a time may access a
method or object.
(C) Ensures that two or more processes will start and
end at the same
time.
(D) Ensures that two or more Threads will start and
end at the same time.
Correct.
(5) How can you retrieve a circle?s radius value
that?s passed to an applet?
(A)
public void init() {
String s = getParameter("radius");
doSomethingWithRadius(s); }
(B)
public static void main(String[] args) {
String s = getParameter("radius");
DoSomethingWithRadius(s); }
(C)
public void init() {
int radius = getParameter("radius");
doSomethingWithRadius(radius); }
(D)
public void init() {
int radius = getParameter();
doSomethingWithRadius(radius); }
Wrong
true/false
1- The method drawRect(int a, int b, int c, int d)
defined in
java.awt draws the outline of a rectangle with a, b
being the x,y coordinates of top left corner, and c,d
being the x,y co-ordinates of the
bottom right corner.
TRUE
Wrong
2- There is no statement in Java to free storage.
FALSE //finalize() is used
Hmmm. Your explanation is wrong. The answer... I guess I will agree with.
You need ALOT more practice. Practice coding for one thing.