Solved Replace words on chat/commands

i want to make a plugin where when someone types a message or runs a command it will be converted to lowercase and replace the phrase "tnt" with the phrase "sponge". Example: if someone runs the command: "//replacenear 10 air tnt" it will change it will run as "//replacenear 10 air sponge". Example 2: if someone says "I AM ABOUT TO CRAFT SOME TNT" it will change to "i am about to craft some sponge" and the player will be sent a message Replaced ' "TNT" with "sponge" '

although it doesn't work

Code:

package Chat;

import static org.bukkit.ChatColor.*;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.AsyncPlayerChatEvent;
import org.bukkit.event.player.PlayerCommandPreprocessEvent;

public class antiTNT implements Listener {

    @EventHandler
// so when worldedit is used, instead of using tnt it will use sponge
    public void onCommandPreprocess(PlayerCommandPreprocessEvent e) {
        String cmd = e.getMessage().toLowerCase();
        Player p = e.getPlayer();
        if (cmd.toLowerCase().contains("tnt")) {
            cmd.toLowerCase().replace("tnt", "sponge");
            e.setMessage(cmd);
            p.sendMessage(RED + "Replaced \"TNT\" with \"sponge\"");
        }
    }

    @EventHandler
//  if someone says "i love tnt" in chat it will change the message to "i love sponge"
    public void onChat(AsyncPlayerChatEvent e) {

        String newMessage = e.getMessage().toLowerCase();
        Player p = e.getPlayer();

        if (newMessage.toLowerCase().contains("tnt")) {
            newMessage.toLowerCase().replace("tnt", "sponge");
            e.setMessage(newMessage);
            p.sendMessage(RED + "Replaced \"TNT\" with \"sponge\"");
        }

    }
}

 

@Natanio

The replace method does not change the string instance, it instead creates a new instance with the change. That means "newMessage" does not get changed, and instead a new string is created, but never used. To fix this, set newMessage equal to this new string when you try to replace the word.

 

@Zombie_Striker
sorry i'm a coding noob. Can you give me the line of code?

just figured out how to do it

Code:

package Chat;

import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.AsyncPlayerChatEvent;
import org.bukkit.event.player.PlayerCommandPreprocessEvent;

public class antiTNT implements Listener {

    @EventHandler
    public void onCommandPreprocess(PlayerCommandPreprocessEvent e) {
        String cmd = e.getMessage().toLowerCase().replace("tnt", "sponge");
        e.setMessage(cmd);
    }

    @EventHandler
    public void onChat(AsyncPlayerChatEvent e) {
        String msg = e.getMessage().toLowerCase().replace("tnt", "sponge");
        e.setMessage(msg);

    }

}

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

 

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