How do you split and unsplit a window/view in Eclipse IDE?

Question

How do you split a window/view in Eclipse IDE? I want to edit code while viewing the different code in the same file.

If there is a trick to open the same file twice

Answer 1

Side by side editors in single Eclipse window.

1. You have an Eclipse window showing a single editor.
2. Window -> new editor. You now have two editor tabs.
3. Click and drag one tab towards the right and a green outline of a vertical screen appears (drag tag towards the bottom and an outline of a horizontal screen outline appears). You can let go as soon as the outline appears.
4. Open file of choice in 2nd editor (recent files show up at bottom of file menu).

ADT/Eclipse:Build: v22.3.0-887826