这个程序主要就是实现一个简单的邮件客户端，在知道邮箱服务器pop3地址的情况下可以实现随意填写发信人地址给指定用户发邮件。代码如下：import java.awt.*;import java.awt.event.*;import java.io.*;import .*;import javax.swing.*;import javax.swing.border.BevelBorder;public class Mailclient extends JFrame public Mailclient() JPanel p = new JPanel();/create the GUIJPanel p1 = new JPanel();JPanel p2 = new JPanel();JPanel p3 = new JPanel();JPanel p4 = new JPanel();JPanel p5 = new JPanel();JButton Send = new
