Java代码详解：demonstation类实现网络连接演示

这段代码定义了一个名为"demonstation"的类，继承了JFrame类，并实现了Runnable和ActionListener接口。\n该类中有以下成员变量：\n- server: 类型为Server的变量\n- client: 类型为Client的变量\n- firstHand, secendHand, thirdHand, Firstbye, Secendbye, Thirdbye, Fourthbye: 类型为Thread的变量\n- jpn1, jpn2: 类型为JPanel的变量\n- lblhost, lblsever, lblmessage, lbljt1, lbljt2, lblFirstHand, lblSecendHand, lblThirdHand, lblFirstBye, lblSecendBye, lblThirdBye, lblFourthBye: 类型为JLabel的变量\n- btnConnect: 类型为JButton的变量\n\n接下来是对每个变量进行初始化和赋值。\n\n最后，定义了一个名为"btnConnect"的按钮，并设置了显示文本为"建立连接"。