//给Start按钮设置事件监听器
Start_b.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
message_t.append("Server starting…");
new Thread(new Runnable() {
public void run(){
try{
ss=new ServerSocket(Integer.parseInt(Port_t.getText())) ;
s=ss.accept();
message_t.append("Client connected…");
while(true){
BufferedReader br=new BufferedReader(new InputStreamReader(s.getInputStream()));
String r;
r=br.readLine();
while(r!=null){
message_t.append(r+ "\n");
r=br.readLine();
}
}
}catch(IOException e){ }
}
}).start();
}
});
想问一下,这里有两处花括号写在圆括号里面了,是什么意思啊
或者有没有替代的写法,因为我觉得我看不太懂