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secondo/Algebras/Hadoop/Java/PSEditor/Functions.java

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2026-01-23 17:03:45 +08:00
package PSEditor;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
public class Functions {
static public String get_localIP()
{
//Get the local IP Address
String localAddr = "";
Enumeration<NetworkInterface> interfaces;
try {
interfaces = NetworkInterface.getNetworkInterfaces();
while (interfaces.hasMoreElements())
{
NetworkInterface current = interfaces.nextElement();
if (!current.isUp() || current.isLoopback() || current.isVirtual()) continue;
Enumeration<InetAddress> addresses = current.getInetAddresses();
while (addresses.hasMoreElements()){
InetAddress current_addr = addresses.nextElement();
if (current_addr.isLoopbackAddress()) continue;
if (current_addr instanceof Inet4Address){
if (!localAddr.isEmpty()){
System.err.println("Warning! There exist multiple addresses, " +
"including : " + localAddr + " and " + current_addr.getHostAddress());
}
localAddr = current_addr.getHostAddress();
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.exit(-1);
}
return localAddr;
}
}