public String toString()
	{
		int a = bits;
		String s = "";
		for(int i = 0 ; i < 32 ; i ++){
			if((a & 0x1) == 0x1){
				s = "1" + s;
			} else{
				s = "0" + s;
			}
			a = a >> 1;
		}
		return s;
	}