[JAVA] Get network information

Processing Coding Questions
1

[JAVA] Get network information

This is the source code to get network information.
It would be good for reference.

ref : Showing IP address of my device in the network? - Processing 2.x and 3.x Forum

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.awt.Desktop;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URI;

private static final String DEFAULT_1 = "IPv4 주소 . . . . . . . . . :";
private static final String DEFAULT_2 = "서브넷 마스크 . . . . . . . :";
private static final String DEFAULT_3 = "기본 게이트웨이 . . . . . . :";
String INFO_IP = "";
String INFO_SUB = "";
String INFO_GW = "";

void setup() {
  println(findLanIp());
  // println(findLangatewayIp());
  
  String lines="";
  lines = findLangatewayIp();
  println(lines);
  
  
  if(lines == null) { return; } 
  int nums1=lines.indexOf(DEFAULT_1);
  int nums2=lines.indexOf(DEFAULT_2); 
  if( (nums1 != -1)&&(nums2 != -1) ){
    INFO_IP=lines.substring(nums1+DEFAULT_1.length()+1, nums2);
  }
  nums1=lines.indexOf(DEFAULT_2);
  nums2=lines.indexOf(DEFAULT_3); 
  if( (nums1 != -1)&&(nums2 != -1) ){
    INFO_SUB=lines.substring(nums1+DEFAULT_2.length()+1, nums2);
  } 
  nums1=lines.indexOf(DEFAULT_3);
  if( (nums1 != -1)&&(nums1 != -1) ){
    INFO_GW=lines.substring(nums1+DEFAULT_3.length()+1, lines.length());
  } 
  lines="";
  
  
  println(" INFO_IP : " + INFO_IP);
  println(" INFO_SUB : " + INFO_SUB);
  println(" INFO_GW : " + INFO_GW);
  
  exit();
}

//====================================================================//
// SIMPLE GET IP
static final String findLanIp() {
  try {
    return InetAddress.getLocalHost().getHostAddress();
  }
  catch (final UnknownHostException notFound) {
    System.err.println("No LAN IP found!");
    return "";
  }
}
//====================================================================//

//====================================================================//
// IPCONFIG GET
private static final String DEFAULT_GATEWAY = "Default Gateway";
String findLangatewayIp() {
  String line_r="";
        if (Desktop.isDesktopSupported()) {
            try {
                Process process = Runtime.getRuntime().exec("ipconfig");
                
                try {
                    String line;
                    BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(process.getInputStream()));                    
                    while ((line = bufferedReader.readLine()) != null) {
                        line_r = line_r + line;
                        // System.out.println(line);
                    }                    
                }catch (Exception e) {}   
            } catch (Exception e) {
                e.printStackTrace();
            }}

    return line_r;
}
//====================================================================//
2

The above source code is the solution.

IP, SUB, Gateway !