lmaoxd

public int binary2decimal()
	{
		int sum = 0;
		int p = 0;
		if(num.substring(0, 1).equals("1"))
		{
			sum = -128;
		}
		for(int i = num.length() - 1; i > 0; i--)
		{
			if(num.substring(i, i+1).equals("1"))
			{
				sum += Math.pow(2, p);
			}
			p++;
		}
		return sum;
	}