public String getHostAddress() { StringBuffer sb = new StringBuffer();
public String getHostAddress() { StringBuffer sb = new StringBuffer(40);
    public String getHostAddress() {        StringBuffer sb = new StringBuffer();        for (int i = 0; i < addr.length; i++) {            sb.append(addr[ i] & 0xff);            if (i < (addr.length - 1)) sb.append(".");        }        return sb.toString();    }