The WatchService API is fairly low level, allowing you to customize it. Creating a Watch Service and Registering for Events.When an event comes in, it is handled as needed. The registered process has a thread (or a pool of threads) dedicated to watching for any events it has registered for. When the service detects an event of interest, it is forwarded to the registered process. When registering, you tell the service which types of events you are interested in: file creation, file deletion, or file modification. This API enables you to register a directory (or directories) with the watch service. The package provides a file change notification API, called the Watch Service API. It does not scale to applications that have hundreds of open files or directories to monitor. One way to do so is to poll the file system looking for changes, but this approach is inefficient. To implement this functionality, called file change notification, a program must be able to detect what is happening to the relevant directory on the file system. JEdit Dialog Box Showing That a Modified File Is Detected The following sample dialog box shows how this notification looks with the free editor, That one with OpenJDK modification, apparently jEdit App isn't looking for those JVM capabilities in OpenJDK's Contents/ you ever found yourself editing a file, using an IDE or another editor, and a dialog box appears to inform you that one of the open files has changed on the file system and needs to be reloaded? Or perhaps, like the NetBeans IDE, the application just quietly updates the file without notifying you. Here it also seems that Java UI Apps completely ignore JAVA_HOME environment variable, whether it is set through shell (ex. That one with jEnv don't work in opposition to what jEnv macos-javahome command says. => Also this way with a modified OpenJDK's ist and Big Sur 11.6.1 don't work.Īfter trying, both ways don't work at the moment in my environment with Big Sur 11.6.1. In brief, in my environment, modify the file /Library/Java/JavaVirtualMachines/openjdk.jdk/Contents/ist from this JavaVM Purpose was to modify OpenJDK's ist adding BundledApp capability, as pointed here and here. Modifying OpenJDK to run Java applications => This way with jEnv and Big Sur 11.6.1 don't work.Ģ. The final result that is this setting through jEnv is completely ignored by UI Java Apps, and still get error: I created it anyway, with right perms just to go further with jEnv and apply all changes and restart everything you need. # applications on startup for the **currently active version of Java**.įirst thing, in Big Sur 11.6.1, there is no ~/Library/LaunchAgents folder under my profile directory. # Installs a file located at ~/Library/LaunchAgents/ist. Purpose was to try jEnv command: $ jenv macos-javahomeĪs it should (conditional is mandatory) set JAVA_HOME for all GUI Applications through launchctl setenv, as stated here: Homebrew with openjdk and jEnv (macos-javahome).Just for information, as posted solution with ist, works great for me!Īnyway, I was looking for something that acted globally, like a config or setting (sneaky too :-)), who let open any UI Java App without giving error message: So that's a workaround, but I kinda want to be able to click on the application icon! A JVM must be loaded before calling this function. If I run the jar file at the command line then jedit does start up, albeit with these errors showing up in the terminal (significant? maybe not): % /usr/local/opt/openjdk/bin/java -jar /Applications/jEdit.app/Contents/Java/jedit.jarġ2:39:14 OSXAdapter: Could not talk to EAWT:ġ2:39:14 OSXAdapter: : class macosx.OSXAdapter cannot access class (in module sktop) because module sktop does not export to unnamed module 12:39:15.678 java JavaNativeFoundation: GetGlobalVM: Failed to locate for JNI_GetCreatedJavaVMs(). I tried installing jedit via homebrew too, but the result was the same. but how can I tell the jEdit application where my JRE is. OpenJDK 64-Bit Server VM Homebrew (build 16.0.2+0, mixed mode, sharing) OpenJDK Runtime Environment Homebrew (build 16.0.2+0) All looks good for java in the terminal: java -version So I installed java with brew install java and followed the instructions to symlink it, and add it to my. "This application requires that java 11 or later be installed on your computer." I installed jEdit on my new mac (Intel processor 11.3.1 Big Sur) but it gives me the message
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