Exception doubts (urgent)

Question

Question no 1 :
Given:
boolean bool = true;
if(bool = false) {
System.out.println("a");
} else if (bool) {
System.out.println("c");
} else if (!bool) {
System.out.println("c");
} else {
System.out.println("d");
What is the result?
A. a
B. b
C. c
D. d
E. Compilation fails.
Question no 2:
class Super {
public int i = 0;
public Super(String text) {
i = 1;
public class Sub extends Super {
public Sub(String text) {
i = 2;
public static void main(String args[]) {
Sub sub = new Sub("Hello");
System.out.println(sub.i);
What is the result?
A. 0
B. 1
C. 2
D. Compilation fails.
Question no 3 :
Given:
try {
int x = 0;
int y = 5 / x;
} catch (Exception e) {
System.out.println("Exception");
} catch (ArithmeticException ae) {
System.out.println("Arithmetic Exception");
System.out.println("finished");
What is the result?
A. finished
B. Exception
C. Compilation fails.
D. Arithmetic Exception
Question no 4 :
public class SyncTest{
public static void main(String[] args) {
final StringBuffer s1= new StringBuffer();
final StringBuffer s2= new StringBuffer();
new Thread () {
public void run() {
synchronized(s1) {
s2.append("A");
synchronized(s2) {
s2.append("B");
System.out.print(s1);
System.out.print(s2);
}.start();
new Thread() {
public void run() {
synchronized(s2) {
s2.append("C");
synchronized(s1) {
s1.append("D");
System.out.print(s2);
System.out.print(s1);
}.start();
Which two statements are true? (Choose Two)
A. The program prints "ABBCAD"
B. The program prints "CDDACB"
C. The program prints "ADCBADBC"
D. The output is a non-deterministic point because of a possible deadlock condition.
E. The output is dependent on the threading model of the system the program is
running on.

Answer 1

Bloody cross-poster
http://forum.java.sun.com/thread.jspa?threadID=639843
Do your homework yourself.