we have developed GUI tool using Java SE 11 , packaged using Maven. Recommend user to download and set Java in system path to launch the tool. Batch file for windows and .command file for Mac and Linux. Do we need to get notarize approval from apple to use it in Mac OS. Please advice
Thanks
You don't need Notarization for the script files. For your GUI Tool it highly depends on your projects dependencies. If your project only use common java packages, then everything should be fine. But there are libaries which require notarization. I personally had this issue with the net.java.dev.jna dependency. My experience is based on a jar bundled within an application. I am not sure if it is the same for a jar excuted from a script only. I recommend to just build your app and try to run it on a catalina machine.
I am working on a large JavaFX application which is due for deployment. I want to wrap the .jar files with Launch4j and create an installer using Inno Setup. However, I am having trouble with the process.
When using Launch4j, it spits out these errors (see 1). However, despite these errors, everything works perfectly fine using an MWE I created to verify that Launch4j wraps jar files properly. The MWE is just a small JavaFX application, where I use Launch4j to generate an .exe file and use Inno Setup to generate an installer. I can install this MWE with no issues using the generated installer and run the app. As mentioned, however, when I follow this exact same approach for my large application, which does have a lot more dependencies, I am not able to run the application after using the generated installer.
I searched for solutions to this and found this work-around using Inno Setup (see ban-geoengineering's answer):
How do I bundle a JRE into an EXE for a Java Application? Launch4j says "runtime is missing or corrupted."
I followed the steps mentioned but am still not able to run the application after generating the jar wrapper with Launch4j and running the generated installer created by Inno Setup. When I try to run the app, simply nothing happens.
Application information and development environment
The application utilizes custom-made java libraries developed in-house which act as an intermediary to communicate with a device's eSW through a custom interface. These java libraries and device drivers are needed in order to communicate with the device and need to be delivered with the application, as in included with the installer. I am using IntelliJ IDEA 2018.1 under Windows 10 Enterprise. The JDK is version 9.0.4.
Steps taken prior to using Launch4j and Inno Setup
I have followed the steps mentioned here https://www.jetbrains.com/help/idea/creating-and-running-your-first-java-application.html#package to package the application. I can successfully run the application via the commandline using java [options] -jar nameOfJar. The application needs certain VM options in order to communicate with the device drivers, and I am suspecting the issue lies here when generating the .exe file and generating the installer.
Addition 1
I have tried to add a custom classpath in Launch4j. It seems that Launch4j does identify the jars that the main class is dependent on, as it includes all the proper jar files (see 3).
I have in addition to this tried to mimic the JVM options I use to run the application via the commandline (see 4).
When executing the application it spits out NoClassDefFoundError and says it is due to the com/demant/gearbox/corona/model/GBCManager. However, this should already be included via the jar file com.demant.gearbox.corona.model.jar, as you can see in 3.
But, as you can see from both 3 and 4 the NoClassDefFoundError is still thrown.
I'm wanting to use a few JavaFX components in a Swing app (notably JFXPanel for its HTML 5 rendering support). My app is currently set up in Eclipse 4.3 (Kepler) and I have the latest Java 7 JDK installed on my machine.
This tutorial from Oracle suggests that all you have to do is just refer to a JavaFX class and it'll work in a Swing app. So I type in JFXPanel panel = new JFXPanel(), but Eclipse does not recognize it as a valid Java class. It does recognize other Java 7 classes, like java.nio.
I can't figure out how to get Eclipse to recognize JavaFX classes. This question was previously answered about JavaFX in Eclipse. The first response said that you need to start by creating a new JavaFX project, which I can't do because I already have a fairly developed Swing app. The second is to use the e(fx)clipse plugin, but the tutorial also seems to require this. If there's something special I have to do in order to get a non-JavaFX project in Eclipse to use JavaFX classes, I can't figure out how to do it.
The problem with JavaFX is that it is not on the default classpath so eclipse won't find it (and your exported swing application won't either unless you use the oracle packaging utility!).
So you have 2 options:
a) you install e(fx)clipse and modify the projects Buildpath to include the JavaFX-SDK library.
b) you add the jfxrt.jar yourself to the projects Buildpath (you don't need anything else).
e(fx)clipse would give you extra support for FX development. The version that can be installed into Kepler can be found at http://download.eclipse.org/efxclipse/updates-nightly/site
I have made sample application with JavaFX using netbeans 7.2. When I run application from netbeans it is working fine. Now I want to distribute this application as the standalone application.
So I am trying to opening this application from the executable jar file made by netbeans itself in the dist folder. But I am getting error : Unable to Load JavaFX runtime
How to resolve this issue ??
Also I wanted to know the best way to distribute this application as desktop standalone application ? Means I wanted to know the final package for distribution would it be executable jar file ?
For this final package(suggested for above question) will there be any prerequisites for the application to run on windows environment ? : This is importance because our final environment is very limited. It don't have even java installed on it.
I don't know why launching the executable jar created by NetBeans does not work for you.
You can workaround this issue by packaging your application as a Self Contained Application. Such a package includes the java and javafx runtimes with your application so you never need to worry about distribution and installation of these things to your client. In any case, it sounds like such a package is a good fit for your application.
A self-contained application is a wrapper for your JavaFX application, making it independent of what the user might have installed.
I'm new to the programming scene. Been working with C++ for about 5 months now, and have decided I want to start getting into Java. I'm using Eclipse as my IDE, and obviously Java for the language. I'm trying to write a simple HelloWorld application, which can be run through a command prompt executable.
In Visual Studio, it seems it's rather easy to create an executable. All I've ever had to do is use a pull down arrow and choose Release, and then run my build. The purpose of wanting to be able to write/run Java in command prompt is so that I'm able to practice some of the language basics before I go in full force with Swing.
So bottom line, what is the easiest way to create a command prompt .exe written with Java?
Thanks in advance!
Java doesn't natively allow building of an exe, that would defeat its purpose of being cross-platform.
AFAIK, these are your options:
Make a runnable JAR. If the system supports it and is configured appropriately, in a GUI, double clicking the JAR will launch the app. Another option would be to write a launcher shell script/batch file which will start your JAR with the appropriate parameters
There also executable wrappers - see How can I convert my Java program to an .exe file?
See also:
Convert Java to EXE: Why, When, When Not and How
Creating a native installer using jpackage
A java packaging tool named jpackage was released as part of the Java Development Kit (JDK) version 16.
This tool works in conjunction with native packaging tools for various platforms (e.g. WIX for Windows, RPM, and DEB for Linux distributions, DMG for Mac) to allow building native installers for Java applications which can then be run as executables. For distribution, it may be possible to distribute just the executable for the application, independent of the installer (I don't know, I didn't try that).
A nice, tutorial style, blog post that describes the use of the jpackage tool to create a native Windows installer for a Java application is:
How to create a Windows Native Java application (generating .exe file)?
Customizing the runtime image using jlink and jdeps
The packaging tool can (optionally) be combined with the jlink tool:
jlink - assemble and optimize a set of modules and their dependencies into a custom runtime image
This allows you to customize the runtime image for your application to only include the required custom selected modular parts of your application code, java runtime, and 3rd party libraries, rather than distributing a complete java runtime.
Optionally, you can also use the jdeps tool to determine inputs to jlink.
Complete discussion of usage of jdeps + jlink + jpackage + a native bundle creator (e.g. wix/rpm/deb/dmg) is outside of scope for a StackOverflow answer, but various resources can be found on the web if you search.
Creating a standalone .exe instead of an installer
This can be done using warp-packer to create a exe out of the image and app launcher created by jlink.
How to create a standalone .exe in Java (that runs without an installer and a JRE)
Third party tools can help deliver a solution
If you wish to use all these tools in combination, things can get complicated, and I'd advise using a 3rd party utility or template to help perform this task. For example:
badass-jlink-plugin (documentation) -> "allows you to create custom runtime images for modular applications with minimal effort. It also lets you create an application installer with the jpackage tool."
For JavaFX specific applications (as your question has a JavaFX tag), you could review:
JPackageScriptFX -> "demonstrates how projects can use scripts to build self-contained, platform-specific executables and installers of their JavaFX applications via the jdeps, jlink, and jpackage tools."
For native mobile deployments, see Gluon Mobile
This question was Windows specific, but for completeness, if your target is native application deployment on a mobile device, then likely you will need to use a 3rd party solution such as Gluon Mobile.
Background Rationale (ignore if not needed)
creating a native installer using jpackage might be a bit of work, so why would you do it?
Here are some reasons:
When an application is distributed via an installer created using jpackage, that application can be installed on a target system without requiring the user to manually install other dependencies (such as a Java Runtime). The installer will take care of ensuring that your application and any dependencies it requires are installed.
The application ships with its own customized version of the Java Runtime. This means that if the user doesn't install a JRE, and, if they have installed a version of the JRE which is incompatible with your application, your application will still function correctly.
The application can be installed and uninstalled using standard OS facilities for the target platform. Most users of those platforms are familiar with these.
Yes, Java is cross-platform for the most part, but many users don't care much about that, instead they just want a smooth and familiar installation (and uninstallation) experience for their application and jpackage can help accomplish that.
Typical Java programs compile into .jar files, which can be executed like .exe files provided the target machine has Java installed and that Java is in its PATH. From Eclipse you use the Export menu item from the File menu.
Creating .exe distributions isn't typical for Java. While such wrappers do exist, the normal mode of operation is to create a .jar file.
To create a .jar file from a Java project in Eclipse, use file->export->java->Jar file. This will create an archive with all your classes.
On the command prompt, use invocation like the following:
java -cp myapp.jar foo.bar.MyMainClass