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How do I permanently turn on line numbers in IntelliJ IDEA 14? This post is outdated: how-can-i-permanently-have-line-numbers-in-intellij
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Just assign a shortcut to Copy with Line Numbers action (Ctrl+Shift+A, search, Alt+Enter).
Open any Java source file in any project and right click on the left bar in the code window. In the pop-up window which opens up, click on the option, Show Line Numbers.
Run JCreator, select Configure/Options, then select Editor/Java, then... Also, be sure the "show line numbers" box is selected.
Permanently (Ubuntu):
File > Settings > Editor > General > Appearance > Show Line Numbers
For just the current editor: View > Active Editor > Show Line Numbers
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You can do it even faster, using the Search Everywhere tool (press Shift twice): type "Show Line Numbers" (or even "line") and the top hit is the switch for permanent line numbers.
There are 2 switches for line numbers, one that has a On/Off switch and works globally, and one without the switch - for the current file. And one more for the Active Editor (current file).
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Go to Settings/Editor/General/Appearance and enable Show line numbers to permanently show line numbers for all editors.
The solution with View > Active Editor > Show Line Numbers seems to work only for the active editor (when you close the current tab or open a new file you have to enable it again).
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