This plugin allows you to enter a sequential number for the current caret in Jetbrains products.
Default shortcut key Shift ＋ Ctrl ＋ F12.
Another great plugin that can do a lot more than just incrementing is String Manipulation. If the functionality of my plugin is not enough for you, consider using this one!
Download InputSequence - Plugins | JetBrains.
You can also install the plugin manually from local.
First, clone this repository. Execute gradle task "buildPlugin". Build zip file in idea-input-sequence/build/distributions. Unzip the ZIP file and extract the idea-input-sequence-X.X.X.jar. Install the jar file from "Install Plugin from Disk..." in the IntelliJ IDEA settings.
First, select the area where you want to enter the sequential number. Next, press Menu > Edit > InputSequence to display the dialog. Enter any number you wish to start with.