public void removeChannel(String channel, String sender) throws IOException {
File file = new File("channels.txt");
FileWriter d = new FileWriter(file);
channels.remove(channel);
StringBuilder f = new StringBuilder();
for (int i = 0; i < channels.size(); i++) {
if (!channels.get(i).equalsIgnoreCase(channel)) {
f.append(channels.get(i).toString().toLowerCase());
f.append("\n");
}
}
d.flush();
d.write(f.toString());
d.close();
}
public void appendChannel(String channel, String sender) throws IOException {
File file = new File("channels.txt");
FileWriter d = new FileWriter(file);
channels.add(channel.toLowerCase());
StringBuilder f = new StringBuilder();
for (int i = 0; i < channels.size(); i++) {
f.append(channels.get(i).toString());
f.append("\n");
}
System.out.println("f:" + f.toString());
d.flush();
d.write(f.toString());
d.close();
this.joinChannel(channel);
this.sendMessage(channel, "Hello ya'll. I was invited by " + sender + ".");
}