java聊天工具源代码

importjava.awt.*;importjava.awt.event.*;importjava.io.*;importjava.util.*;importjavax.swing.*;importjavax.swing.border.TitledBorder;importjavax.swing.event.*;publicclassChatServerextendsJFrame{//usedtoreadUsernameandPasswordfromusers.datafileprivatefinalStringfileName="users.data";p