B4J Question InvocationTargetException error

[Didier99]

I now regularly get this error when I recompile my project. Usually, I just recompile and the second time it goes without a hitch, like it did this time.

Waiting for debugger to connect...
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:116)
    at java.base/java.lang.reflect.Method.invoke(Method.java:578)
    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1081)
Caused by: java.lang.NullPointerException: Cannot invoke "java.lang.Class.getMethod(String, java.lang.Class[])" because "<local6>" is null
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:459)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:364)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
    ... 2 more
java.lang.ExceptionInInitializerError
    at java.base/java.lang.Class.forName0(Native Method)
    at java.base/java.lang.Class.forName(Class.java:495)
    at java.base/java.lang.Class.forName(Class.java:474)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.loadClass(LauncherImpl.java:383)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplicationWithArgs$3(LauncherImpl.java:422)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:484)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:457)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:456)
    at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
    at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
    at java.base/java.lang.Thread.run(Thread.java:1589)
Caused by: java.lang.RuntimeException: java.net.SocketException: Connection reset
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:140)
    at anywheresoftware.b4a.shell.ShellBA.raiseEvent2(ShellBA.java:100)
    at b4j.can232.main.<clinit>(main.java:17)
    ... 13 more
Caused by: java.net.SocketException: Connection reset
    at java.base/sun.nio.ch.NioSocketImpl.implRead(NioSocketImpl.java:313)
    at java.base/sun.nio.ch.NioSocketImpl.read(NioSocketImpl.java:340)
    at java.base/sun.nio.ch.NioSocketImpl$1.read(NioSocketImpl.java:789)
    at java.base/java.net.Socket$SocketInputStream.read(Socket.java:1025)
    at java.base/java.io.BufferedInputStream.fill(BufferedInputStream.java:255)
    at java.base/java.io.BufferedInputStream.implRead(BufferedInputStream.java:289)
    at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:276)
    at java.base/java.io.DataInputStream.readByte(DataInputStream.java:271)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:229)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:167)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
    at java.base/java.lang.reflect.Method.invoke(Method.java:578)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:111)
    ... 15 more

It's not a show stopper, but maybe I am doing something wrong. I have written multiple B4J apps and never seen this behavior.

 

[teddybear]

It looks like runtime error, try to compile & run on release mode.

 

[Erel]

Something breaks the debugger. Make some tests with other projects and see whether it is specific to this one or not.

Sometimes unexpected code in Process_Globals can cause such issues. Or it might be an over aggressive anti-virus that breaks the network connection.