B4J Question [JDA] cerror: cannot access JDAwrapper

shadowdevfr · Jun 12, 2021

Hi,

I saw @DonManfred 's discord api for b4j. I tried to compile using the demo code and got this error while compiling:

error:

javac 1.8.0_271
src\b4j\example\main.java:55: error: cannot access JDAwrapper
de.donmanfred.JDAwrapper _jda = null;
             ^
  bad class file: F:\additional bbl b4j\jda.jar(de/donmanfred/JDAwrapper.class)
    class file has wrong version 55.0, should be 52.0
    Please remove or make sure it appears in the correct subdirectory of the classpath.
1 error

shadowdevfr · Jun 16, 2021

Anyone?

DonManfred · Jun 16, 2021

shadowdevfr said:
Anyone?

You need to use a higher java version.
Minimum 11, eventually 14.

I just can say i actively using this Lib every day as i build our Bot with it.

Edit: I am using Java 11.0.1 downloaded from this site.

shadowdevfr · Jun 16, 2021

Thanks ! Using java 16 it compiles. Now i'm getting this error

error:

Waiting for debugger to connect...
Program started.
java.lang.NoSuchMethodError: 'void net.dv8tion.jda.api.JDABuilder.<init>(java.lang.String)'
    at de.donmanfred.JDABuilderwrapper.Initialize2(JDABuilderwrapper.java:71)
    at b4j.example.main._appstart(main.java:70)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:632)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:234)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:167)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:108)
    at anywheresoftware.b4a.shell.ShellBA.raiseEvent2(ShellBA.java:98)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:95)
    at b4j.example.main.main(main.java:29)
java.lang.RuntimeException: java.lang.NoSuchMethodError: 'void net.dv8tion.jda.api.JDABuilder.<init>(java.lang.String)'
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:137)
    at anywheresoftware.b4a.shell.ShellBA.raiseEvent2(ShellBA.java:98)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:95)
    at b4j.example.main.main(main.java:29)
Caused by: java.lang.NoSuchMethodError: 'void net.dv8tion.jda.api.JDABuilder.<init>(java.lang.String)'
    at de.donmanfred.JDABuilderwrapper.Initialize2(JDABuilderwrapper.java:71)
    at b4j.example.main._appstart(main.java:70)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:632)
Program terminated (StartMessageLoop was not called).
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:234)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:167)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:108)
    ... 3 more

Code:

Sub Process_Globals
    Dim sh As DefaultShardManagerBuilder
End Sub

Sub AppStart (Args() As String)
    Dim jda As JDA
    Dim b As JDABuilder
    b.Initialize2("bot", config.bottoken) ' String token from Developersite
    b.setAutoReconnect(True).setEnableShutdownHook(True)
    jda.Initialize("bot",b.build)

    Dim j As BotActivity
    j.watching("test")
    sh.setactivity(j)
    
    sh.Initialize("ShardManager")
    sh.setToken(config.bottoken)
    sh.build
    jda.awaitReady
End Sub

Sub bot_onMessageReceived(event As Object)
    Dim ev As MessageReceivedEvent = event
    Dim msg As Message = ev.Message
    Dim ch As MessageChannel = msg.Channel
    
    Dim msgcontent As String = msg.ContentStripped
    If msgcontent = "!ping" Then
        ch.sendMessage("PONG !")
    End If
    
End Sub

DonManfred · Jun 16, 2021

Are you building a nonui app? Did you forget to call StartMessageLoop?

Do not use any code other than this in AppStart.

Especially BotActivity. It can only be called after you got the Event JDA_onReady called.

B4X:

    Dim b As JDABuilder
    b.Initialize("JDA",token)
    b.setAutoReconnect(True).setEnableShutdownHook(True)
    b.setToken(token)
   
    jda.Initialize("JDA",b.build)
   

    Dim sh As DefaultShardManagerBuilder
    sh.Initialize("ShardManager",token)
    sh.setToken(token)
    sh.build
    jda.awaitReady

Under the hood i think you need a new jda-lib and also an updated jda.jar. The one from the example it really old now.

Away from that you should create a new thread for any new question/problem. One thread should summarize one Problem.

shadowdevfr · Jun 16, 2021

Thanks for your reply, I created a new thread.

DonManfred · Jun 16, 2021

Try this version please. Just in case the old example code is incompatible.

The code above is the code i use in my DiscordBot. I am using a UI-App.

https://www.dropbox.com/s/iqdwg6idfa9nnhg/JDA_4.3.277.zip?dl=1

shadowdevfr · Jun 16, 2021

DonManfred said:
Try this version please. Just in case the old example code is incompatible.

The code above is the code i use in my DiscordBot. I am using a UI-App.

https://www.dropbox.com/s/iqdwg6idfa9nnhg/JDA_4.3.277.zip?dl=1

With the updated version, It gets better, but still crashes (after login)

B4X:

Waiting for debugger to connect...
Program started.
juin 16, 2021 2:57:54 PM net.dv8tion.jda.internal.JDAImpl login
INFO: Login Successful!
java.lang.NoSuchMethodError: 'void com.neovisionaries.ws.client.WebSocketFactory.<init>(com.neovisionaries.ws.client.WebSocketFactory)'
    at net.dv8tion.jda.internal.requests.WebSocketClient.connect(WebSocketClient.java:367)
    at net.dv8tion.jda.internal.requests.WebSocketClient$StartingNode.run(WebSocketClient.java:1396)
    at net.dv8tion.jda.api.utils.ConcurrentSessionController$Worker.processQueue(ConcurrentSessionController.java:155)
    at net.dv8tion.jda.api.utils.ConcurrentSessionController$Worker.run(ConcurrentSessionController.java:133)
    at java.base/java.lang.Thread.run(Thread.java:831)
juin 16, 2021 2:57:54 PM net.dv8tion.jda.api.sharding.DefaultShardManager buildInstance
INFO: Login Successful!
java.lang.NoSuchMethodError: 'void com.neovisionaries.ws.client.WebSocketFactory.<init>(com.neovisionaries.ws.client.WebSocketFactory)'
    at net.dv8tion.jda.internal.requests.WebSocketClient.connect(WebSocketClient.java:367)
    at net.dv8tion.jda.internal.requests.WebSocketClient$StartingNode.run(WebSocketClient.java:1396)
    at net.dv8tion.jda.api.utils.ConcurrentSessionController$Worker.processQueue(ConcurrentSessionController.java:155)
    at net.dv8tion.jda.api.utils.ConcurrentSessionController$Worker.run(ConcurrentSessionController.java:133)
    at java.base/java.lang.Thread.run(Thread.java:831)

DonManfred · Jun 16, 2021

Are you missing adding this jar?

shadowdevfr · Jun 16, 2021

Hi, thanks for your reply (again!)
Finally, it starts!

I think you should update the main JDA post you made a while ago, to prevent other people from getting theses errors too.

B4J Question [JDA] cerror: cannot access JDAwrapper

shadowdevfr

Member

shadowdevfr

Member

DonManfred

Expert

shadowdevfr

Member

DonManfred

Expert

shadowdevfr

Member

DonManfred

Expert

shadowdevfr

Member

DonManfred

Expert

Attachments

shadowdevfr

Member

Similar Threads

B4J Question [JDA] cerror: cannot access JDAwrapper

Member

Member

Expert

Member

Expert

Member

Expert

Member

Expert

Attachments

Member

Similar Threads

Privacy & Transparency

Privacy & Transparency