You can always turn it back in Settings→ Editor→ Auto Import. Just press Alt+ Enteron an item and confirm the exclusion. If you are fed up with some class constantly appearing in the suggestion list, IntelliJ IDEA can exclude this class or even a whole package so you never see it again.
Quick popups such as Quick documentation (via Ctrl+ Q, or Ctrl+ Jfor Mac) or Quick definition (via Shift+ Ctrl+ I, or Shift+ Cmd+ Ifor Mac) are available when you browse suggestions in code completion. This helps you to choose between overloaded options and compare your input with what’s expected. IntelliJ IDEA shows parameter info for every overloaded method or constructor, and highlights the best match for the parameters already typed. If you want to see the suggested parameters for any method or constructor, just press Ctrl+ P( Cmd+ Pfor Mac). For example, if you only remember a part of the name, just type it and IntelliJ IDEA will still find the right matches for you. It means that you don’t necessarily need to type an identifier from the beginning. IntelliJ IDEA also supports so-called Middle matching. If you select a boolean item from the suggestion list with !, IntelliJ IDEA automatically adds the negation operator to the result. To complete a statement, just press Shift+ Ctrl+ Enter( Shift+ Cmd+ Enterfor Mac). Statement completion automatically adds missing parentheses, brackets, braces and adds the necessary formatting. This is helpful if you’re editing a part of an identifier, such as a file name. If you select an item from the suggestion list by clicking Tab, it will overwrite the identifier at the caret, instead of just inserting the suggestion. Note that when you call Smart completion twice, it shows you more results, including chains and non-imported static members. To call Smart completion, press Shift+ Ctrl+ Space. Smart completion is aware of the expected type and data flow and offers the option relevant to the context. Smart completionĪdditionally to Basic completion, IntelliJ IDEA provides Smart completion which is much more advanced and comprehensive. Note, when you call Basic completion twice, it shows you more results, including private members. But if you want to call it explicitly, simply press Ctrl+ Spaceshortcut. This means you don’t need to press any shortcuts to see suggestions.
It is worth mentioning that IntellIJ IDEA provides Basic completion automatically when you start typing. Basic completionīasic completion offers most trivial suggestions for variables, types, methods, expressions, etc. However, as there are several code completion features, it is important to learn how they work and when it’s best to use each one. Focused on developer productivity, IntelliJ IDEA provides powerful features for code completion.
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