I try to use JRebel plugin for IDEA in simple by structure project:
Test/
├── out
│ └── production
│ └── Test
│ ├── App.class
│ └── rebel.xml
├── src
│ ├── App.java
│ └── rebel.xml
└── Test.iml
<?xml version="1.0" encoding="UTF-8"?>
<application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.zeroturnaround.com" xsi:schemaLocation="http://www.zeroturnaround.com http://www.zeroturnaround.com/alderaan/rebel-2_0.xsd">
<classpath>
<dir name="/home/ant/Documents/Java_Projects/Test/out/production/Test">
</dir>
</classpath>
</application>
public class App {
public static void main(String[] args) throws Exception {
for (; ;) {
System.out.println("Hello jrebel");
Thread.sleep(1000);
}
}
}
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: #############################################################
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: JRebel 5.5 (201312230953)
2014-02-25 17:46:55 JRebel: (c) Copyright ZeroTurnaround OU, Estonia, Tartu.
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: Over the last 1 days JRebel prevented
2014-02-25 17:46:55 JRebel: at least 0 redeploys/restarts saving you about 0 hours.
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: You are running with an evaluation license.
2014-02-25 17:46:55 JRebel: You have 11 days until the license expires.
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: You will see this notification until you obtain a
2014-02-25 17:46:55 JRebel: full license for your installation.
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: Visit www.jrebel.com for instructions on obtaining
2014-02-25 17:46:55 JRebel: a full license. If you wish to continue your evaluation
2014-02-25 17:46:55 JRebel: please e-mail to [email protected].
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: If you think you should not see this message contact
2014-02-25 17:46:55 JRebel: [email protected] or check that you have your
2014-02-25 17:46:55 JRebel: license file in the same directory as the JAR file.
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: The following plugins are disabled at the moment:
2014-02-25 17:46:55 JRebel: * Axis2 plugin (set -Drebel.axis2_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Camel plugin (set -Drebel.camel_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Click plugin (set -Drebel.click_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Deltaspike plugin (set -Drebel.deltaspike_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Eclipse RCP Plugin (set -Drebel.eclipse_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * JBoss7 EJB Plugin (set -Drebel.jboss7_ejb_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * JRuby Plugin (set -Drebel.jruby_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Jersey plugin (set -Drebel.jersey_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Log4j2 plugin (set -Drebel.log4j2_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Mustache Plugin (set -Drebel.mustache_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * RESTlet plugin (set -Drebel.restlet_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Seam-Wicket plugin (set -Drebel.seam_wicket_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Spring Data Plugin (set -Drebel.spring_data_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Thymeleaf Plugin (set -Drebel.thymeleaf_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * VRaptor plugin (set -Drebel.vraptor_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * Vaadin CDI utils plugin (set -Drebel.vaadin_cdiutils_plugin=true to enable)
2014-02-25 17:46:55 JRebel: * WebObjects plugin (set -Drebel.webobjects_plugin=true to enable)
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: #############################################################
2014-02-25 17:46:55 JRebel:
2014-02-25 17:46:55 JRebel: Directory '/home/ant/Documents/Java_Projects/Test/out/production/Test' will be monitored for changes.
Hello java
Hello java
Hello java
...
When I change java word in output stream on jrebel
System.out.println("Hello jrebel");
the JRebel doesn't reload changes.
What's wrong ?
In your example, t he execution never goes out of the while loop, hence it never goes out of the method. A method cannot be replaced in the middle of its execution, so to be reloaded the execution should go out of this method first.
Do this:
public class App {
public static void main(String[] args) throws Exception {
Bean bean = new Bean();
for (; ;) {
bean.foo();
Thread.sleep(1000);
}
}
}
public class Bean {
public void foo(){
System.out.println("Hello jrebel");
}
}
Now you can change anything in Bean class, but not inside the while loop - the class could be reloaded but the method never exits, hence never gets a chance to execute the new instructions.
BTW, don't forget to compile the changed class.