What will be the output of the program?

public class Test 
{
    public static void main (String [] args) 
    {
        final Foo f = new Foo();
        Thread t = new Thread(new Runnable() 
        {
            public void run() 
            {
                f.doStuff();
            }
        });
        Thread g = new Thread() 
        {
            public void run() 
            {
                f.doStuff();
            }
        };
        t.start();
        g.start();
    }
}
class Foo 
{
    int x = 5;
    public void doStuff() 
    {
        if (x < 10) 
        {
            // nothing to do
            try 
            {
                wait();
                } catch(InterruptedException ex) { }
        } 
        else 
        {
            System.out.println("x is " + x++);
            if (x >= 10) 
            {
                notify();
            }
        }
    }
}

1. int w = (int)888.8;
2. byte x = (byte)1000L;
3. long y = (byte)100;
4. byte z = (byte)100L;

int I = 0;
label:
    if (I < 2) {
    System.out.print("I is " + I);
    I++;
    continue label;
}

interface Foo141 
{ 
    int k = 0; /* Line 3 */
} 
public class Test141 implements Foo141 
{
    public static void main(String args[]) 
    {
        int i; 
        Test141 test141 = new Test141(); 
        i = test141.k; /* Line 11 */
        i = Test141.k; 
        i = Foo141.k; 
    } 
}

public class Test 
{  
    public static void main(String args[]) 
    { 
        int i = 1, j = 0; 
        switch(i) 
        { 
            case 2: j += 6; 
            case 4: j += 1; 
            default: j += 2; 
            case 0: j += 4; 
        } 
        System.out.println("j = " + j); 
    } 
}

Float f = new Float("12"); 
switch (f) 
{
    case 12: System.out.println("Twelve"); 
    case 0: System.out.println("Zero"); 
    default: System.out.println("Default"); 
}

for (int i = 0; i < 4; i += 2) 
{ 
    System.out.print(i + " "); 
} 
System.out.println(i); /* Line 5 */

import java.util.*; 
class I 
{
    public static void main (String[] args) 
    {
        Object i = new ArrayList().iterator(); 
        System.out.print((i instanceof List)+","); 
        System.out.print((i instanceof Iterator)+","); 
        System.out.print(i instanceof ListIterator); 
    } 
}

public class CommandArgs 
{
    public static void main(String [] args) 
    {
        String s1 = args[1];
        String s2 = args[2];
        String s3 = args[3];
        String s4 = args[4];
        System.out.print(" args[2] = " + s2);
    }
}

> java CommandArgs 1 2 3 4

1. 16*4
2. 16>>2
3. 16/2^2
4. 16>>>2

1. hashCode() doesn't have to be overridden if equals() is.
2. equals() doesn't have to be overridden if hashCode() is.
3. hashCode() can always return the same value, regardless of the object that invoked it.
4. equals() can be true even if it's comparing different objects.