How can I block writing something in the Chat?

I want to write a plugin, which contols the chat. If somebody writes for example "fuck you", nothing should happen. But if somebody writes something normal, it should be in the chat.

I hope you can help me (Sorry about my english)

 

Code:java

public void Chat(PlayerChatEvent event){
if(event.getMessage().contains("whatever you want to catch"){
event.setCancelled(true);
}
}

 

How can I change the text?

 

For that you don't need and if just:

Code:java

public void Chat(PlayerChatEvent event){
event.getMessage().replace("catch here", "Replacement here")
}

 

Thank you very much

 

Glad to help

 

event.getMessage().replaceAll("catch here", "rpelacer");

would work better in this case

 

or

PHP:

event.setMessage("");

 

True

 

No, then you wouldn't get any message at all

 

ooh, and to make it even cooler you could do:
event.getMessage().replaceAll("catch here", ChatColor.MAGIC + "rpelacer");

That way it's just misc stuff for the word.

 

Why would you use event.setMessage(""); in the first place, just use event.setCancelled(true);
...........

 

public void onChat(PlayerChatEvent ev)
{
String msg = ev.getMessage();
if(msg.contains("fuck you"))
{
msg.replace("fuck you", "*");
}
ev.setMessage(msg);
}

That simply replaces the message with * for every character

EDIT by Moderator: merged posts, please use the edit button instead of double posting.