介绍了一款基于Jpcap 的网络工具软件的设计与实现。该软件在Windows平台下开发，采用JAVA语言，使用 Jpcap 获得网卡信息、捕获数据包和发送数据包。该软件具有良好的用户操作界面，可以选择并显示网卡信息、发送自定义 UDP数据包、通过PING测试网络连通性。

This paper mainly introduces the designing procedure and realization of the network tool software based on Jpcap. The software is developed using JAVA language under the Windows system. Using this software, we can get the information of network card, capture and send packets. The Graphical User Interface (GUI) of the software is friendly. The information of the network card that we choose can be seen. The UDP packets that we defined can be sent. Moreover, the network connectivity can be tested through the method of PING.