import java.util.*;

public class Command
{
    public static final String MASK = "mask";
    public static final String MEM = "mem";
    public static final String OPEN_BRACE = "[";
    public static final String CLOSE_BRACE = "]";
    public static final String EQUALS = "=";

    public static final char MASK_IGNORE = 'X';

    public static final int INTEGER_SIZE = 36;

    public Command (String mask, Vector<String> cmds, boolean debug)
    {
        _mask = mask;
        _commands = cmds;
        _debug = debug;
    }

    public void execute (Memory mem)
    {
        String theMask = _mask.substring(_mask.indexOf(EQUALS) +1).trim();

        if (_debug)
            System.out.println("Bitmask is: "+theMask);

        for (int i = 0; i < _commands.size(); i++)
        {
            int startIndex = _commands.elementAt(i).indexOf(OPEN_BRACE);
            int endIndex = _commands.elementAt(i).indexOf(CLOSE_BRACE);
            String addrStr = _commands.elementAt(i).substring(startIndex +1, endIndex);
            Long addr = Long.parseLong(addrStr);

            if (_debug)
                System.out.println("Memory address: "+addr);

            startIndex = _commands.elementAt(i).indexOf(EQUALS);

            String valueStr = _commands.elementAt(i).substring(startIndex +1).trim();
            Long value = Long.parseLong(valueStr);

            if (_debug)
                System.out.println("Value: "+value);

            Vector<String> addresses = applyMask(theMask, addr);
        }
    }

    @Override
    public String toString ()
    {
        String str = _mask;

        for (int i = 0; i < _commands.size(); i++)
        {
            str += "\n" + _commands.elementAt(i);
        }

        return str;
    }

    private Vector<String> applyMask (String theMask, long address)
    {
        return null;
    }

    private char[] convertToBinary (long value)
    {
        char[] tempBinary = Long.toBinaryString(value).toCharArray();
        char[] binary;

        if (tempBinary.length < INTEGER_SIZE)
        {
            binary = new char[INTEGER_SIZE];

            for (int i = 0; i < (INTEGER_SIZE - tempBinary.length); i++)
            {
                binary[i] = '0';
            }

            for (int j = 0; j < tempBinary.length; j++)
            {
                binary[(INTEGER_SIZE - tempBinary.length) +j] = tempBinary[j];
            }
        }
        else
            binary = tempBinary;

        return binary;
    }

    private String _mask;
    private Vector<String> _commands;
    private boolean _debug;
}
@@ -305,19 +305,20 @@
 har 
-MASK_IGNORE
+FLOATING_BIT
  = '
@@ -1787,20 +1787,17 @@
 (String 
-theM
+m
 ask, lon
@@ -1805,32 +1805,308 @@
  address)%0A    %7B%0A
+        char%5B%5D theMaskArray = mask.toCharArray();%0A        Vector%3CString%3E masks = new Vector%3CString%3E();%0A        int count = 0;%0A%0A        for (int i = 0; i %3C theMaskArray.length; i++)%0A        %7B%0A            if (theMaskArray%5Bi%5D == FLOATING_BIT)%0A                count++;%0A        %7D%0A%0A
         return n

Update Command.java