How to set hot swap with Trava Open JDK in your IntelliJ Idea

1. Install to your computer Trava Open JDK. You can find installation binaries at Trava Open JDK on GitHub. If you are Windows user, I would give you a tip to just download Windows binaries and unpack them to folder where you have the rest of JDKs. Exp. C:/Program files/Java/ .
2. In IntelliJ Idea go to Project Structure and under Platform Settings add to SDKs Trava Open JDK. Also under Project Settings in Project SDK select Trave Open JDK as JDK for your project.
3. And as last step change in IntelliJ Spring Boot runner configuration Running Application Update Policies. Change On ‘Update’ action and set it to Update classes and resources and On frame deactivation set the same to Update classes and resources. You can check image below for more details.

And that is all. You can start your app now, and your code will be hot-swapped on frame deactivation. Or you can command hot-swap manually with ctrl + shift + f9.

The result of the problem is the red underling of all lines using Lombok functionality. The warning occurs after IntelliJ start-up on the button right side and looks like this:

Lombok plugin incompatible with 2018.1 Intellij Idea

A solution to this problem is straightforward. Just follow the instructions below:

1. Open settings and select plugin options.
2. Search or select the Lombok plugin, right-click and reload the list of plugins.
3. Then there will be Update button instead of Uninstallbutton. Press the Update button.
4. After re-installation of the plugin, restart IntelliJ Idea for updating its internal dependencies. That is it.