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Java 9: Building Robust Modular Applications by Jason Lee, Peter Verhas, Dr. Edward Lavieri

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Feedback modes

Command-line tools usually provide relatively sparse feedback in an effort to not overcrowd the screen or otherwise become a nuisance to developers. JShell has several feedback modes in addition to giving developers the ability to create their own custom modes.

As you can see from the following screenshot, there are four feedback modes--concise, normal, silent, and verbose. Here, we entered the /set feedback command without any parameters to list the feedback modes as well as to identify what the current feedback mode is. The first line of output displays the command-line command and argument set that would be used to set the mode to the currently set mode. So, in the following screenshot, the current feedback mode is set to ...

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