"Hot Code Replace Failed - add method not implemented". I get this error message every time I change something in my test class (and save it). Can't figure out what it means. Can somebody help?
The “may be out of sync” warning indicates the change to a class within Eclipse has not been replaced in the server's JVM. To resolve this problem you must restart your server. In the near future we are planning to add an application RELOAD feature that we believe will workaround this problem.
Hot code replace (HCR) is a debugging technique whereby the Eclipse Java debugger transmits new class files over the debugging channel to another JVM. In the case of Eclipse development, this also applies to the VM that runs the runtime workbench.
Hot code replacement (HCR), which doesn't require a restart, is a fast debugging technique in which the Java debugger transmits new class files over the debugging channel to another JVM.
Hot code (or hot code path) are execution paths in your application / compiler in which most of the execution time is spent, and thus which are potentially executed very often.
Possibly, you have a test which is still running (in debug mode). Try finishing all tests (you can see them in the debug view: window->show view->debug) and try again...
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