IntelliJ IDEA's editor supports all the standard features of a text editor such as selecting text, searching, cutting, copying, and pasting. Let's start with some basic editor commands and then focus on more advanced features of IntelliJ IDEA, such as syntax-aware selection, clipboard history, code reformatting, smart code completion, and code inspections.

To duplicate a line of code (or a selected block) use Ctrl + D (PC) or cmd + D (Mac). To remove a line of code or selected block, use Ctrl + Y (PC) or cmd + Y (Mac).

Sometimes it may be useful to comment portions of code. To use the line comment, press Ctrl + / (PC) or cmd + / (Mac). If you favor the block comment, use Shift + Ctrl + / (PC) or Shift + cmd + / (Mac). IntelliJ IDEA will be aware of the programming language of the file you are editing and use the comments that are appropriate to this language. Like almost every programmer's editor, IntelliJ IDEA provides you with the option to search for text and text replace...