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Editorial Team
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Asked: 2026-06-17T18:23:27+00:00

Sometimes, I need to comment out a whole file. Normally, I’d just wrap the

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Sometimes, I need to comment out a whole file. Normally, I’d just wrap the class in /* */, but that doesn’t work if there’s already existing comments inside the class:

/*
class foo {

    /**
     * Great documentation - but this breaks my 
     * whole-file-comment!
     */
    public void dooFoo() {
    }

}
*/

Is there any way to come around this? Preferably without inserting //-comments at every line.

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1 Answer

  1. Editorial Team

    Preferably without inserting //-comments at every line.

    That’s the simplest way to do it. Most IDEs have keyboard shortcuts to add or remove // at the start of every line in a selection – so you just need to select the whole file (e.g. Ctrl-A) and then press the shortcut.

    Visual Studio: Ctrl+K, Ctrl+C to comment; Ctrl+K, Ctrl+U to uncomment.

    Eclipse and IntelliJ: Ctrl+/ to toggle.

    IntelliJ: Ctrl+Shift+/ to use /* ... */, handling embedded existing comment blocks appropriately.

    NetBeans: Ctrl+Shift+C to toggle.

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