public String getLocalHostName() {String hostName;try {InetAddress addr = InetAddress.getLocalHost();hostName = addr.getHostName();} catch (Exception ex) {hostName = "";}return hostName;}public String[] getAllLocalHostIP() {String[] ret = null;try {String hostName = getLocalHostName();if (hostName.length() > 0) {InetAddress[] addrs = InetAddress.getAllByName(hostName);if (addrs.length > 0) {ret = new String[addrs.length];for (int i = 0; i < addrs.length; i++) {ret[i] = addrs[i].getHostAddress();}}}} catch (Exception ex) {ret = null;}return ret;}