B4J Question [SOLVED] B4Xpages app: B4J layout file error java.lang.RuntimeException: java.io.FileNotFoundException: MainPage.bjl

[peacemaker]

HI, All

Already 2-3 times i have found that some B4J project (not all) give the error that cannot find the main layout file after compilation in Release mode.
Debug mode works OK.
B4A part of the B4Xpages project also compiled OK.
OpenJDK 11.

Spoiler: Debug mode is OK:

B4J Version: 9.30
Parsing code. (0.26s)
Java Version: 11
Building folders structure. (0.01s)
Running custom action. (0.06s)
Compiling code. (0.41s)
Compiling layouts code. (0.00s)
Organizing libraries. (0.00s)
Compiling generated Java code.

Spoiler: Release mode runtime error at start:

b4xpagesmanager._vvvvvvvvvvvvvvv4 (java line: 302)
java.lang.RuntimeException: java.io.FileNotFoundException: MainPage.bjl
at anywheresoftware.b4a.keywords.Common.CallSub4(Common.java:518)
at anywheresoftware.b4a.keywords.Common.CallSubNew2(Common.java:464)
at b4j.example.b4xpagesmanager._vvvvvvvvvvvvvvv4(b4xpagesmanager.java:302)
at b4j.example.b4xpagesmanager._vvvvvv1(b4xpagesmanager.java:717)
at b4j.example.b4xpagesmanager._vvvv6(b4xpagesmanager.java:114)
at b4j.example.b4xpagesmanager._vvvv7(b4xpagesmanager.java:121)
at b4j.example.b4xpagesmanager._initialize(b4xpagesmanager.java:486)
at b4j.example.main._appstart(main.java:59)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:109)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:96)
at b4j.example.main.start(main.java:37)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$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:174)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.io.FileNotFoundException: MainPage.bjl

How to understand what is the trouble ?

 

[Erel]

Open the generated jar file with 7zip and check the Files folder inside the jar.

Do you see this file? Note that the file name is case sensitive.

 

[peacemaker]

Do you see this file?

Yes. Erel, the project https://www.b4x.com/android/forum/threads/b4x-class-chart-analysis.136043 can be tested, try to compile B4J here, please.

 

[Erel]

Can you upload the compiled jar?

 

[peacemaker]

http://pmaker.biz/TrendUtils.jar

"Save as", pls. It's 4 MB

 

[Erel]

I've ran it from the command line. It runs fine.

 

[peacemaker]

Opps. My manual start shows:

java -jar TrendUtils.jar
Exception in thread "JavaFX Application Thread" Exception in thread "main" java.lang.UnsupportedClassVersionError: b4j/example/main has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0

p:\GoogleDrive\!Sources\!\TrendUtils\TrendUtils\B4J\Objects>java -version
java version "1.8.0_261"
Java(TM) SE Runtime Environment (build 1.8.0_261-b12)
Java HotSpot(TM) Client VM (build 25.261-b12, mixed mode, sharing)

 

[agraham]

Perhaps you are trying to run something compiled with JDK 11 with Java 8?

 

[peacemaker]

Looks so ! But how to install JDK11 under Win10, if B4X recommended bundle is not the installer ?
JAVA_HOME is set to the recommended OpenJDK11.

 

[agraham]

But how to install JDK11 under Win10, if B4X recommended bundle is not the installer ?

Sorry, but I don't understand this!

 

[DonManfred]

! But how to install JDK11 under Win10

The installationstep are described here: https://www.b4x.com/b4j.html

 

[peacemaker]

I uninstalled old Java 1.8. OpenJDK 11 unzipped again (to the same "d:\Programs\Java\jdk-11.0.1"), and it was not changed.
But manual start now gives:

d:\Programs\Java\jdk-11.0.1\bin>java -jar TrendUtils.jar
Error: JavaFX runtime components are missing, and are required to run this application

Debug mode is working OK, as usual. But not release.

Only one is clear - it's only my PC is with trouble.
Thanks to all, will google.

 

[agraham]

Running jars under OpenJDK 11

With Java 8 you could run a jar on a Windows PC by double clicking on it. This does not work with OpenJDK so as I want to be able to quickly run some utility B4J programs easily without packaging them this is what I did. 1) I installed OpenJDK in a convenient place, mine is in 'C:\jdk-11', and...

www.b4x.com

 

[peacemaker]

Running jars under OpenJDK 11

Thanks, does not help, app is started and the window is immediately closed. Some Java local trouble. Strange that the Debug mode is fully OK.

And more over strange that i have B4J projects that work OK in Release mode OK too right now ! Also UI apps.

 

[Erel]

I ran it with Java 11 from the command line using this:

cd c:\java\jdk-11.0.1\bin
java --module-path ..\javafx\lib\ @"C:\Program Files (x86)\Anywhere Software\B4J\release_java_modules.txt" -jar C:\Users\H\Downloads\TrendUtils.jar

 

[peacemaker]

command line using this

java --module-path ..\javafx\lib\ @"D:\Programs\B4J\release_java_modules.txt" -jar TrendUtils.jar

Thanks, Erel ! Such way - yes, app is started OK from JAR at my PC also.
But why no start (not found the Layout file) in Release mode from B4J ...

 

[Erel]

Not sure. Never encountered such issue. Does it work once it is packaged?

 

[peacemaker]

Does it work once it is packaged?

Yes, it's started manually as you suggested from the command line and works fully OK.
I tried some other B4J projects - some starts OK in Release mode, some - no, like this. With native views, and B4Xviews, no difference... Very strange situation.
If to create the default empty projects by "File"-menu (UI and B4XPages) - they both start OK in Release mode.

 

[peacemaker]

SOLVED !
Deleted "Objects" folder, and re-compilation in Release mode ... works !