hotswap

I am looking for better HotSwapping in the JavaVM. Being able to only apply method body changes is okay but quite limiting. The options available is JRebel and a discontinued project called Dynamic Code Evolution Virtual Machine (DCEVM) . There is a JEP 159 out there that was written by the core developper of DCEVM. A blog post from 2011 mentioned that the developers of DCEVM now work for Oracle to integrate this into the JDK. Do we have this kind of support for JDK 8 beta already or was it postponed to JDK 9? I need hot swapping for adding and removing and renaming private methods mostly.

I am currently trying to implement hot class reloading in a Java application, however there are so many plugins to choose from and I cannot find a good comparison between the options. Also the websites of the plugins are not all very clear on what the exact features are and how to use them. There is also the option of making a custom hot class reloading ClassLoader , but I feel like that is similar to "reinventing the wheel" if there are already so many plugins which can do the job.. do other people agree with this? The Java plugins I found which I think can do the job: JRebel Dynamic Code

My scenario is as follows - I have a client C with function foo() which performs some computation. I'd like a server S, which doesn't know about foo(), to execute this function instead, and send the result back to the client. I am trying to determine the best way to perform this in Erlang. I am considering: Hot code swapping - i.e. "upgrade" code in S such that it has the function foo(). Execute and send back to the client. In a distributed manner where nodes are all appropriately registered, do something along the lines of S ! C:foo() - for the purpose of "sending" the function to process

I'm fairly new to IntelliJ and I'm using it to develop an AngularJS / Java web application. When I make changes to HTML or JavaScript code, I always have to restart the app server (I'm using Jetty). Is there a config or plugin that provides hotswap for HTML/JS/CSS files? I'm using IntelliJ 12 Ultimate edition. You need the option "Update resources". You should be able find this option in your server Run/Debug configuration. I had the same problem but I already fixed it. You can follow this steps: Go to Help->Find Action Type "Registry". Find and mark : “compiler.automake.allow.when.app.running

I have a spring boot application running fine with Intellij IDE. i.e i started the Application class that has the main method which delegates to SpringApplication.run. Everything works great except hotswap. When I change the source, I am forced to re-start the application. Even If I start the application in debug mode, I dont see hotswap working. I could see that Intellij's Debug settings have hotswap enabled. My observation shows that when I run the springboot application, classpath used is my /projects/MyProject/ classes/production/ .... Files under classes/production are not getting updated

JRebel allows for newly compiled code to be redeployed without restarting the application. I am wondering if there are any alternative (free?). The FAQ page answers this question, but I am sure it's biased towards JRebel. This question was asked a year ago on this site, but I am bringing it back up to see if anyone has any new information. On a side note, I really like JRebel, but if there is a free alternative, I am willing to try it. One additional note, I am working on an open source project, and they offer free one year licenses to people who can prove they are on an open source project.