I will be using JavaFX on a project. I am no expert but I did install it once with no major issue or problem.
But I switched to a new computer and after trying to install it doesn't build; at first I got the message that
JavaFX runtime components were missing then got the java.lang.module.FindException: Module javafx.controls not found
and I did check other posts that had the same error as the mentioned above but got no solution to the problem and now the message is
Unrecognized option: --module-path Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit.
(Please note that I'm using VS Code and no build tools, I am referencing the libraries to use JavaFX)
Path to JavaFX
launch.json configured
JRE path
Environment variables
And I'm really confused with the JRE, SDK and JDK, I installed the SDK using VS Code but I don't know if my environment variables are configured as they should be...
Thanks in advance for the help, since I'm no expert I don't know if this information is enough, I hope it is :)
My suggestion is to use JavaFX of vscode to build the project instead of JavaFX SDK.
I think the main problem is still caused by the environmental settings.
If you must use the JavaFX SDK, put it in a location without spaces, or quote the path when using it. And please read the document in detail.
Related
I've been trying to set up on JavaFX in VSCode. I added the JavaFX jar files to the referenced libraries and added the following statement to launch.json (obviously with my path to the lib folder):
"vmArgs": "--module-path \"C:/path/to/javafx-sdk-19/lib\" --add-modules javafx.controls,javafx.fxml"
This is exactly what multiple youtube videos and other StackOverflow posts have said to do, but I still keep getting this error.
(I know that I can use Maven or Gradle in VScode but am completely unfamiliar with both and still want to try to make this work.)
Hopefully I didn't miss anything painfully obvious but thank you for any help.
You should download JavaFX for your JDK version.
Uncompress JavaFX.zip and move bin folder to your project.
You should create two classes, one for writing the JavaFX window code and one for running it.
The error can be fixed.
I suggest you learn how to use Maven or Gradle in vscode. It is very important.
At runtime, your app needs access to the JavaFX (OpenJFX) libraries.
Either:
Install a copy of the OpenJFX libraries with your app, as directed in the Answer by RedSnack-BCS.
Replace your Java implementation with one that includes the OpenJFX libraries.
I know of two such implementations of Java (JDKs) that include necessary libraries:
ZuluFX, a special edition of their Zulu product, by Azul Systems.
LibericaFX, a special edition of their Liberica product, by BellSoft.
You may have identified a third approach with the use of passing arguments to the JVM. But I am not familiar with that solution.
I am using Eclipse IDE 2020-03 version with Java. I am trying to use FXML, checked some tutorials and steps online and followed them. But I am still getting the following error:
Error occurred during initialization of boot layer
java.lang.module.FindException: Module javafx.controls not found
I googled for help. There are a lot of people having the same issue and were able to resolve this issue. But all I've seen is they are using either NetBeans IDE or IntelliJ. Does anybody have solution for Eclipse? Any help would be appreciated.
I followed this tutorial -> https://www.youtube.com/watch?v=bC4XB6JAaoU . Here is what I currently have:
e(fx)clipse 3.6.0 installed from Market Place
"Java Build Path" contains libraries (I was on 15.0, then switched back to 14.0 but the error still exist)
javafs-sdk jar files
"Java Build Path" contains libraries (I was on 15.0, then switched back to 14.0 but the error still exist)
VM Arguments has the following line (pointing library location): --module-path "C:\Users\my_name\Documents\Scene Builder\openjfx-14.0.1_windows-x64_bin-sdk\javafx-sdk-14.0.1\lib" --add-modules javafx.controls,javafx.fxml
I tried to use "-clean" in eclipse.ini file but it didn't help. Matter fact, when I tried to create new simple project and follow all the steps again, Java doesn't even recognize JavaFX.
Thanks!
I also encountered the same issue. My problem originated from the fact that for some reason the javafx sdk library was located under module path instead of the class path in the build configurations. After moving the JavaFX SDK from the module path to the class path the error was fixed.
If this is your case also, you can do fix this by simply right-clicking on the javaFX project folder-> Build Path-> Configure Build Path-> Select JavaFX SDK-> Remove library-> Select classpath -> add library-> user library-> select library-> apply.
Essentially it should look like this:
A great tutorial to help me set up was found on here
Hope that this helps
Thanks everyone! I managed make it work. I installed the latest Eclipse IDE 2020-09
Version: 2020-09 (4.17.0)
Build id: 20200910-1200
Installed jdk15.0.1 back and placed it under Modulepath not under Classpath and it is working now.
enter image description here
If you are using the newer versions you should put everything in the ModulePath.
java -version
openjdk version "17.0.1" 2021-10-19
OpenJDK Runtime Environment (build 17.0.1+12-39)
OpenJDK 64-Bit Server VM (build 17.0.1+12-39, mixed mode, sharing)
JavaFX isn't part of the JDK anymore. So treat it like a normal dependency. Like any other maven library too: https://mvnrepository.com/artifact/org.openjfx
I'm using OpenJDK 11 and here is an example of a my pom.xml File: https://pastebin.com/6hjDtaiw
The javafx-maven-plugin is to get the platform specific libraries (.dll for Windows, .so for linux ...)
javafx-controls is for the Labels, Buttons, and other JavaFX UI elements
And do not start your Application Class directly. Otherwise you'll get the following error:
Error: JavaFX runtime components are missing, and are required to run this application
Just write an additional class to call the "main" method of your Application class.
I know this old post, if anyone still facing this problem, then try to follow any one of these solutions that work for me.
1-> put both JavaFX and JavaFX SDK under the module path.
2-> or you can add this command inside the virtual arguments.
--module-path "\path\to\javafx-sdk-15.0.1\lib" --add-modules JavaFX.controls,JavaFX.fxml
here module path is the location of your external JAR file.
Hope this work for you.
i tried all the above solutions but nothing work, then I just creat module-info.java file and my program start working.
just right click on your project and goto>>configure>>creat module-info.java
Error: A JNI error has occurred, please check your installation and try again.
Eclipse states: test has been compiled by a more recent version of the Java Runtime (class file version 56.0), this version of the Java Runtime only recognizes class file versions up to 52.0.
I had the problem referenced at this question: "Could not find or load main class" while trying to use JavaFX in Eclipse When using JDK13 and JavaFX13. All solutions pointed to downgrading to Java 8.
I installed Java 8, updated the build path, and it built fine. But now I get the error I am using Eclipse 2019-06 (4.12.0), JavaFX13, and JDK 1.8.0_231.
I researched the answer but the two questions that come didn't help. One was for an IntellJ solution and the other had a package I am unfamiliar with, and the error had to do with that package.
I simply don't know how to correct the build path or dependencies to fix this issue. It appears I need a lower version of the JVM, but cannot seem to locate it. Am I right, or can you please help?
Well, I have dropped back to JDK 8 and the built in JavaFX. Despite my best efforts, I cannot get JDK13 and JavaFX 13 to work without receiving the error "Could not find or load main class" (see link in post). Since there is no solution to that problem yet that works for me, I can bypass my error on this request all together and just use much older packages.
Ok, so I followed the guide on vscode website to the T, and I'm stuck where it says the debugger will create the launch.json for me. There is no launch.json.
Here's the guide for your ref - https://code.visualstudio.com/docs/java/java-tutorial
When I run the code it tells me that none of the packages/methods are defined. Specifically that anything outside of that single file is undefined. any imports don't work at all; Although all the packages/methods are there and included in the program.
main.java:2: error: package exceptions does not exist
import exceptions.myException;
Even the pre-built program I cloned from github doesn't work.
I've installed the java extensions pack which includes Language Support for Java(TM) by Red Hat and Debugger for Java.
I have JDK installed and the path is defined in my environment variables as JAVA_HOME - C:\Program Files (x86)\Java\jdk1.8.0_161.
I've also installed maven and checked to make the version checked out through the CMD prompt.
I've watched around 10 yt vids and they all say the same thing.
if anyone has a decent guide on how to set this up or can personally walk me through the process I would greatly appreciate it.
I recently installed visual studio on my Ubuntu Linux machine. I also installed Java on my Ubuntu system but I keep getting "Classpath is incomplete" warning" anytime I run my a java code as well as Java implicit super constructor not defined whenever I run my code. I would like an easy to understand solution on how to fix this particular problem.
Edit:
I tried this exact same code on my Mac and it doesn't give me the "Java implicit super Constructor not defined" warning.
If you getting that error message you can try below steps:-
1) Open Command Palette (Ctrl+Shift+P) and typing the command Java: Configure Java Runtime.
2) Scroll down to install JDK, Choose the version(I chose latest one), download it install it (during installation you get the option to add the path to java_home variable choose it) ,after clicking finish on set up click reload on vs code.
This has already been answered at Visual Studio Code - Java Classpath is incomplete. Only syntax errors will be reported
Visual studio code does not support java right out of the box without a maven or eclipse project defining the classpath. Best solution in my opinion is to use eclipse or intellij or any other java IDE instead of VSCode.
The constructor error you're getting is because your class isn't starting with a capital letters. Classes should always start with a capital letter.
Java naming conventions: http://www.oracle.com/technetwork/java/codeconventions-135099.html