问题
My employer wants me to use IntelliJ for Java development. Previously, I've always used eclipse.
One of my favorite features in eclipse was being able to click on a variable, method parameter, class field, etc and see the usage of those variables highlighted throughout the class.
Is there a way to enable this feature in IntelliJ IDEA? I'm using Ultimate version 9.0.3.
回答1:
File | Settings (Preferences on Mac) | Editor | General | Highlight usages of element at caret.
回答2:
I think Intellij does not do this by default for a reason.
If you click in a symbol on your code, you can hit Ctrl+Shift+F7, then it will highlight (High visible, not just like the default underline) all occurences of the symbol. Good thing is, if you move out the cursor of that symbol, it will keep it highlighted wherever you go.
Tip: You can highlight how many different symbols you want at the same time.
Tip 2: F3 / Shift + F3 goes to the next / previous occurence respectively.
回答3:
Go into Settings->IDE Settings->Editor->Color and Fonts->General
Make a copy of Dracula to something like MyOwnDracula (can't change the built in schema).
Find whatever you need to change, in this case it's "Identifier under caret" and change the colors for foreground and background to your liking.
来源：https://stackoverflow.com/questions/3763183/intellij-how-to-auto-highlight-variables-like-in-eclipse