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  IntelliJ IDEA allows you to work with several projects simultaneously, each one in a separate window. The projects are independent, and cannot share information, except for the Clipboard operations. All the projects run in the same instance of IntelliJ IDEA and use the same memory space.

This behavior is controlled by the options in the section Project opening in the General page of the Settings dialog.

In this section:

Prerequisite

Make sure that one of the options Open project in a new window or Confirm window to open project in in the General page of the Settings dialog is selected.

Opening project in a new window

To open a project in a new window
  1. Open a project, while another one is already open.
  2. Depending on the selected behavior:
    • If the option Open project in a new window is selected, IntelliJ IDEA will silently open new project in a new window.
    • If the option Confirm window to open project in, IntelliJ IDEA will prompt you to specify whether you want to open project in a new window, or close the current project and reuse the existing window.

      Open in new window

      Click the New Window button to leave the current project in its window and open the new one in a separate window.

  • When reopening, IntelliJ IDEA suggests to reopen the whole group of projects.
  • The check box Add to currently opened projects appears when you open a new project in a window, where another project is already opened.

See Also

Concepts:

Reference:

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