Try this..
public class MAIN extends JavaPlugin{
public MAIN() {
try {
this.fw = new FileWriter("plugins/TestMessage/messages.txt", true);
} catch (Exception e) {
// TODO: handle exception
}
}
FileWriter fw = null;
public void onEnable(){
Logger.getLogger("Minecraft").info("MessageBroadcaster made by cheeseballs500 aka weakwizardsucks2");
}
public void onDisable(){
try {
fw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}//fw cannot be resolved
}
}