Import a project from Eclipse
Import a project to IntelliJ IDEA
Launch IntelliJ IDEA.
If the Welcome screen opens, click Open.
Otherwise, from the main menu, select File | Open.
In the dialog that opens, select the directory in which your sources, libraries, and other assets are located and click Open.
When you import or clone a project for the first time, IntelliJ IDEA analyzes it. If the IDE detects more than one configuration (for example, Eclipse and Gradle), it prompts you to select which configuration you want to use.
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Select the necessary configuration and click OK.
The IDE pre-configures the project according to your choice. For example, if you select Gradle project, IntelliJ IDEA executes its build scripts, loads dependencies, and so on.
If you have been working with another project, select whether you want to open the new project in a new dialog or in the current one.