Binary Code:
public class BinaryNumber implements BinaryNumberInterface
{
    boolean[] nums = new boolean[9];
    boolean[] bits = new boolean[8];
    public BinaryNumber(int num)
    {
        if(num < -256 || num > 255)
        {
            throw new IllegalArgumentException("Please make the number between -256 to 255");
        }
        if(num == -256)
        {
            bits[8] = true;
        }else{
            boolean neg = false;
        }
        int notBinary = Math.abs(num);
        for(int i = 7; i >= 0; i--)
        {
            if(notBinary >= Math.pow(2, i))
            {
                bits[7 - i] = true;
                notBinary -= Math.pow(2, i);
            }
            else
            {
                bits[7 - i] = false;
            }
        }
    }

    public BinaryNumber(String binary)
    {
        boolean[] nums = new boolean[9];
        boolean zero = true;
        boolean one = true;
        for(int i = 0; i < nums.length; i++)
        {
            if(i == 0)
            {
                zero = false;
            }
            if(i == 1)
            {
                one = true;
            }
        }
    }

    public BinaryNumber add(BinaryNumber num)
    {
        return new BinaryNumber(2);
    }

    public BinaryNumber negate()
    {
        nums[8] = true;
        for(int i = 0; i < nums.length - 1; i++)
        {
            nums[i] = !nums[i];
        }
        int carry = 0;
        while(nums[carry] == true && carry <= 7)
        {
            nums[carry] = false;
            carry++;
        }
        return this;
    }

    public BinaryNumber subtract(BinaryNumber x)
    {
        return new BinaryNumber(2);
    }

    public BinaryNumber shiftLeft()
    {
        return new BinaryNumber(2);
    }

    public BinaryNumber uShiftRight()
    {
        return new BinaryNumber(2);
    }

    public BinaryNumber and(BinaryNumber x)
    {
        return new BinaryNumber(2);
    }

    public BinaryNumber or(BinaryNumber x)
    {
        return new BinaryNumber(2);
    }

    public BinaryNumber xOr(BinaryNumber x)
    {
        return new BinaryNumber(2);
    }

    public int toInt()
    {
        boolean neg = false;
        int num = 0;
        int[] nums = new int[0];
        for(int i = 7; i >= nums.length; i--)
        {
            if(bits[i] == true)
            {
                num += Math.pow(2, i);
            }
        }
        return num;
    }

    public String toBinaryString()
    {
        String string = "";
        for(int i = 0; i < 8; i++)
        {
            if(bits[i] == true)
            {
                string = string + "1";

            }
            if(bits[i] == false)
            {
                string = string + "0";

            }
        }
        return string;
    }

    public String toHexString()
    {
        return "";
    }
}