如何在Java中解析/proc/PID/net/tcp和/proc/PID/net/tcp6文件中的ip地址？

import java.io.BufferedReader;
import java.io.FileReader;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.List;

public class TcpFileParser {
    public static void main(String[] args) {
        int pid = ProcessHandle.current().pid(); // 获取当前进程的ID
        List<String> ipAddresses = parseTcpFile(pid);
        System.out.println("解析到的IP地址列表：");
        for (String ipAddress : ipAddresses) {
            System.out.println(ipAddress);
        }
    }

    public static List<String> parseTcpFile(int pid) {
        List<String> ipAddresses = new ArrayList<>();

        try {
            BufferedReader reader = new BufferedReader(new FileReader("/proc/" + pid + "/net/tcp"));
            String line;
            while ((line = reader.readLine()) != null) {
                String[] fields = line.trim().split("\\s+");
                if (fields.length >= 4) {
                    String localAddress = fields[2].split(":")[0];
                    String remoteAddress = fields[3].split(":")[0];
                    ipAddresses.add(parseIpAddress(localAddress));
                    ipAddresses.add(parseIpAddress(remoteAddress));
                }
            }
            reader.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        try {
            BufferedReader reader = new BufferedReader(new FileReader("/proc/" + pid + "/net/tcp6"));
            String line;
            while ((line = reader.readLine()) != null) {
                String[] fields = line.trim().split("\\s+");
                if (fields.length >= 4) {
                    String localAddress = fields[2].split(":")[0];
                    String remoteAddress = fields[3].split(":")[0];
                    ipAddresses.add(parseIpAddress(localAddress));
                    ipAddresses.add(parseIpAddress(remoteAddress));
                }
            }
            reader.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return ipAddresses;
    }

    public static String parseIpAddress(String hexAddress) {
        try {
            long address = Long.parseLong(hexAddress, 16);
            byte[] bytes = new byte[]{
                    (byte) (address & 0xFF),
                    (byte) ((address >> 8) & 0xFF),
                    (byte) ((address >> 16) & 0xFF),
                    (byte) ((address >> 24) & 0xFF)
            };
            InetAddress inetAddress = InetAddress.getByAddress(bytes);
            return inetAddress.getHostAddress();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return "";
    }
}