Normally, you’d have to go up to the beginning of the file and add the missing statement manually. Pasting code from elsewhere? If the inserted code block has a class or a method that has not yet been imported, you’ll see an error. The IDE will download and install it for you. To quickly fix that, press Alt+Enter and select the necessary library from the list. If you’re using a piece of code from a library that has not yet been added to your project, it will be highlighted in red as an error. Learn more about how to deal with code problems from this blog post. There, you can deal with each problem, from errors to typos, by pressing Alt+Enter without having to jump between the tool window and the editor. Click the widget to open the list of problems in the Problems tool window. If you’re not sure how a certain fix is going to change your code, you can open the preview by pressing Alt+Space on macOS or Ctrl+Shift+I on Windows and Linux on a suggestion in the list.īy the way, if the widget in the top-right corner tells you that there are problems in your current file, don’t scroll down and look for them. Pressing this shortcut on a highlighted code element in the editor opens a list of possible fixes from which you can select the one that works best. The most powerful tool in IntelliJ IDEA that operates by means of Alt+Enter is code inspections. ![]() Whenever you see a yellow or red light bulb icon in the editor, press Alt+Enter, because IntelliJ IDEA has tips to offer. In reality, they incorporate a vast amount of quick-fixes and suggestions that can correct and improve your code, add code elements, upload missing components, create classes and methods, and do many other amazing things. In a nutshell, context actions help you fix problems and improve your code. They differ depending on your current context and the code that you’re working with. Today, let’s dive deeper into Context Actions.Ĭontext Actions become available to you in the editor as you type. ![]() In one of the previous IntelliJ IDEA: how2pro blog posts, we talked about the Search Everywhere feature and how you can use it to search for code elements and even disable and enable IDE actions or assign shortcuts. IntelliJ IDEA has two shortcuts that can get you out of almost any kind of trouble: Shift+Shift to run Search Everywhere and Alt+Enter to invoke Context Actions. 10.Imagine that you have the entire IntelliJ IDEA interface at the tips of your fingers. And if we want our program just to run until it encounters the next breakpoint, then Run – Debugging Actions – Resume Program ( F9) does just that. If we want our program to run to the line where our cursor is, then Run – Debugging Actions – Run to Cursor ( Alt + F9) accomplishes this. That's what Run – Debugging Actions – Step Out ( Shift + F8) does. When debugging, we may want to run our code until the current method is finished. Alternatively, we can dive into the method at the current line with Run – Debugging Actions – Step Into ( F7). So if that line is a method, we'll execute that entire method in one fell swoop. When our code hits a breakpoint during debugging, we can step over the current line with Run – Debugging Actions – Step Over ( F8). We can toggle a breakpoint at the current line with Run – Toggle Breakpoint – Line Breakpoint ( Ctrl + F8 / Cmd + F8). We view the current breakpoints with Run – View Breakpoints ( Ctrl + Shift + F8 / Shift + Cmd + F8). We can still save all files manually with File – Save all ( Ctrl + S / Cmd + S). IntelliJ IDEA automatically saves our code, for instance, before running it. That is Ctrl + Shift + / in Windows and Alt + Cmd + / in macOS. We can even comment out a whole block of code with Code – Comment with Block Comment. We can use Code – Surround with ( Ctrl + Alt + T / Alt + Cmd +T) to put control structures around our code, such as an if statement. And with Code – Generate ( Alt + Insert / Cmd + N), we can create common methods like getters, setters, or toString(). Code – Code Completion – Complete Current Statement ( Ctrl + Shift + Enter / Shift + Cmd + Enter) finishes our current line.Ĭode – Override Methods ( Ctrl + O) lets us pick inherited methods to overwrite. We may need to type a closing parenthesis and have to put a semicolon at the end. This function also automatically launches after a brief delay in the default IntelliJ IDEA configuration. When we start to type the name of variables, methods, or types, IntelliJ IDEA helps us finish those names with Code – Code Completion – Basic ( Ctrl + Space). ![]() Once we arrive at the right file and the right place, we can start editing our code.
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