Design and Implementation of the Instant Messaging Tool Based on JAVA

Today, the rapid development of information transmission has led to the advent of the Internet era. This makes network instant messaging tools more and more convenient and favored by people so that instant messaging is increasingly important in modern times. The presented design is used to reflect the practicality of instant messaging by designing an instant messaging tool based on Java. Software adopts C / S structure of the client and server through network programming socket and TCP / UDP communication protocol for sending and receiving messages. The object oriented development principles are based on Java using the eclipse development platform of the server and client to the overall design, the software in the design process, and the use of multi threading technology in order to achieve multiple threads running simultaneously and to improve the utilization of server. This design using MySQL database accesses the database by JDBC Bridge. The software can realize user registration, user login, modify personal settings, search and add friends, begin friends chat, take screenshots, complete file transfer, and other functions.