Java 在Netbeans GUI中实现JFrame时出错

我正在Netbeans中使用Jpcap实现一个嗅探器。 代码如下所示。 它在终端工作正常，并提供正确的输出

现在，当我尝试开发一个gui来选择网络接口并在表中显示捕获的数据包时，问题就出现了

import jpcap.*;
import jpcap.NetworkInterface;

import jpcap.packet.DatalinkPacket;
import jpcap.packet.EthernetPacket;
import jpcap.packet.ICMPPacket;
import jpcap.packet.IPPacket;
import jpcap.packet.Packet;
import jpcap.packet.TCPPacket;
import jpcap.packet.UDPPacket;

class Te implements PacketReceiver {

    static int i = 0;
    String protocoll[] = {"HOPOPT", "ICMP", "IGMP", "GGP", "IPV4", "ST", "TCP", "CBT", "EGP", "IGP", "BBN", "NV2", "PUP", "ARGUS", "EMCON", "XNET", "CHAOS", "UDP", "mux"};

    public void receivePacket(Packet packet) {
        System.out.println(packet + "\n");
        System.out.println("this is packet " + i + " :" + "\n");
        i++;

        IPPacket tpt=(IPPacket)packet;
        if (packet != null) {

            int ppp=tpt.protocol;
            String proto=protocoll[ppp];
            System.out.println("about the ip packet in network layer : \n");

            System.out.println("******************************************************************");
                if(tpt.dont_frag){
                    System.out.println("dft bi is set. packet will not be fragmented \n");

                }else{
                    System.out.println("dft bi is not set. packet will  be fragmented \n");
                }
                System.out.println(" \n destination ip is :"+tpt.dst_ip);
                System.out.println("\n this is source ip :"+tpt.src_ip);
                System.out.println("\n this is hop limit :"+tpt.hop_limit);
                System.out.println(" \n this is identification field  :"+tpt.ident);
                System.out.println(" \npacket length :"+tpt.length);
                System.out.println("\n packet priority  :"+(int)tpt.priority);
                System.out.println("type of service field"+tpt.rsv_tos);
                if(tpt.r_flag){
                    System.out.println("releiable transmission");
                } else {
                    System.out.println("not reliable");
                }
                System.out.println("protocol version is : "+(int)tpt.version);
                System.out.println("flow label field"+tpt.flow_label);

                System.out.println("**********************************************************************");

                System.out.println("datalink lavel analysis");
                System.out.println("********************************************************************");
                 DatalinkPacket dp = packet.datalink;


                 EthernetPacket ept=(EthernetPacket)dp;
                 System.out.println("this is destination mac address :"+ept.getDestinationAddress());
                 System.out.println("\n this is source mac address"+ept.getSourceAddress());



                System.out.println("*********************************************************************");
                System.out.println("this is about type of packet");
                System.out.println("******************************************************************************");

                if (proto.equals(("TCP"))) {
                    System.out.println(" /n this is TCP packet");
                    TCPPacket tp = (TCPPacket) packet;
                    System.out.println("this is destination port of tcp :" + tp.dst_port);
                    if (tp.ack) {
                        System.out.println("\n" + "this is an acknowledgement");
                    } else {
                        System.out.println("this is not an acknowledgment packet");
                    }

                    if (tp.rst) {
                        System.out.println("reset connection ");
                    }
                    System.out.println(" \n protocol version is :" + tp.version);
                    System.out.println("\n this is destination ip " + tp.dst_ip);
                    System.out.println("this is source ip"+tp.src_ip);
                    if(tp.fin){
                       System.out.println("sender does not have more data to transfer");
                    }
                    if(tp.syn){
                        System.out.println("\n request for connection");
                    }

                } else if(proto.equals("ICMP")){
                    ICMPPacket ipc=(ICMPPacket)packet;
             // java.net.InetAddress[] routers=ipc.router_ip;
              //for(int t=0;t
                //  System.out.println("\n"+routers[t]);
             // }
              System.out.println(" \n this is alive time :"+ipc.alive_time);
              System.out.println("\n number of advertised address :"+(int)ipc.addr_num);
              System.out.println("mtu of the packet is :"+(int)ipc.mtu);
              System.out.println("subnet mask :"+ipc.subnetmask);
              System.out.println("\n source ip :"+ipc.src_ip);
              System.out.println("\n destination ip:"+ipc.dst_ip);
              System.out.println("\n check sum :"+ipc.checksum);
              System.out.println("\n icmp type :"+ipc.type);
              System.out.println("");


            } else if(proto.equals("UDP")){
                    UDPPacket pac=(UDPPacket)packet;
                    System.out.println("this is udp packet \n");
                    System.out.println("this is source port :"+pac.src_port);
                    System.out.println("this is destination port :"+pac.dst_port);

            }

            System.out.println("******************************************************");

            }




        }




    public static void main(String str[]) throws Exception {
        NetworkInterface[] devices = JpcapCaptor.getDeviceList();
        boolean lt;



        for (int i = 0; i <devices.length; i++) {
            System.out.println(i + " :" + devices[i].name + "(" + devices[i].description + ")");
            System.out.println("    data link:" + devices[i].datalink_name + "("
                    + devices[i].datalink_description + ")");

            System.out.println();
            for (NetworkInterfaceAddress a : devices[i].addresses) {
                System.out.println("    address:" + a.address + " " + a.subnet + " "
                        + a.broadcast);
            }
        }

        JpcapCaptor jpcap = JpcapCaptor.openDevice(devices[0], 2000, true, 20);

        jpcap.loopPacket(-1, new Te());
    }
}

现在Te是一个实现PacketReceiver的类。在我的Netbeans gui中，当控件进入框架时，它首先自身。如何从实现Packetreceiver函数并将其显示在表中的框架中创建一个新类。从终点站很容易，因为Te是唯一一个我喜欢的类，从main我可以叫Te。但在Netbeans中，作为主节点的框架将首先设置为可见。整个控件转到帧，我无法调用调用loopPacket函数

jpcap.loopPacket(-1, new {A class which would let me capture the packet on the device selcetd}());

如何从JFrame.java代码本身调用另一个类来实现这一点

我希望你能理解我的问题并帮助我。我急需帮助，因为这是我的项目，无法在终端显示o/p。

---

谢谢

记住，Swing是单线程的，有关更多详细信息和可能的解决方案，请参阅。至于您的基本问题，您创建了一个要与之交互的类的实例，并调用了它的方法，就像您通常做的一样。我也会看一下并记住，Swing是单线程的，有关更多详细信息和可能的解决方案，请参阅。至于您的基本问题，您创建了一个要与之交互的类的实例，并调用了它的方法，就像您通常所做的一样，我还将查看和

jpcap.loopPacket(-1, new {A class which would let me capture the packet on the device selcetd}());