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When I refresh my web browser after making code changes, why does Eclipse bring up a dialog with the message “Hot code replace failed”?

April 26, 2017bring browser changes code dialog Eclipse Refresh web

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When I refresh my web browser after making code changes, why does Eclipse bring up a dialog with the message “Hot code replace failed”?

1 Answer

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10 Posted

The Eclipse IDE can sometimes have trouble detecting that code has been hot-swapped by the development mode infrastructure’s ClassLoader, even though development mode’s design guarantees that the code is correctly hot swapped on refresh. You can therefore safely ignore this dialog message if it comes up while refreshing code in the browser. If you discover that the code really wasn’t refreshed in the browser after seeing this hot code replacement error message, please let us know by filing an issue on the GWT Issue Tracker.