Solved [Reflection] How would I get the ChatMessage constructor?

Code:

Code:

private static Class<?> CHATMESSAGE = null;
   private static Constructor<?> CHATMESSAGE_CONSTRUCTOR = null;
   private static final String SERVER_VERSION;

   static {
     String name = Bukkit.getServer().getClass().getName();
     name = name.substring(name.indexOf("craftbukkit.")
         + "craftbukkit.".length());
     name = name.substring(0, name.indexOf("."));
     SERVER_VERSION = name;

     try {
      ......
       ICHATCOMP = Class.forName("net.minecraft.server." + SERVER_VERSION
           + ".IChatBaseComponent");
      .....
      
       CHATMESSAGE = Class.forName("net.minecraft.server."+SERVER_VERSION+".ChatMessage");
       try{
       CHATMESSAGE_CONSTRUCTOR = Optional.of(
           CHATMESSAGE.getConstructor(String.class)).get();
       }catch(NoSuchMethodException e){
         CHATMESSAGE_CONSTRUCTOR = Optional.of(CHATMESSAGE.getDeclaredConstructor(String.class)).get();
       }

Problem:.
I am trying to send the PacketPlayOutChat packet, but it must work on all versions of bukkit/spigot, so I am trying to use reflection. Everything else works right ATM, but it is not finding the ChatMessage class's constructor. It's constructor is (ChatMessage(String, Object... )), but I do not know how to get that constructor (since it can have an unlimited amount of parameters).

What you can do to recreate the problem:.N/A

Possible problematic line(s):.

Code:

       CHATMESSAGE = Class.forName("net.minecraft.server."+SERVER_VERSION+".ChatMessage");
       try{
       CHATMESSAGE_CONSTRUCTOR = Optional.of(
           CHATMESSAGE.getConstructor(String.class)).get();
       }catch(NoSuchMethodException e){
         CHATMESSAGE_CONSTRUCTOR = Optional.of(CHATMESSAGE.getDeclaredConstructor(String.class)).get();
       }

The FULL Error log: . N/A

 

@Zombie_Striker
Varargs just get compiled to arrays, so when the code runs, the constructor is really just treated as ChatMessage(String, Object[])

 

@AlvinB
Although that fixed the issue, I now have a new error message.

Where line 67 is

Code:

            Object icb = CHATMESSAGE_CONSTRUCTOR.newInstance(message,null);

EDIT: Fixed. Changed Null to "new Object[0]"

 

@Zombie_Striker
I believe it doesn't like null as an array, try creating an empty object array. (new Object[0])

 

@AlvinB
Just changed it. Everything works now.

 

Why not use Class#getConstructor then fill in the parameters which are String.class and Object[].class?

 

@Zombie_Striker
Also, something I should mention, is that InvocationTargetException isn't actually an exception telling you that something has gone wrong with the actual reflectioning, it's just a wrapper exception for any exception that happend when executing the actual code of the method. See how it says "caused by NullPointerException" at the bottom of the stacktrace?