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You could be writing code for the Mars rover, nuclear power stations, or even financial trading algorithms, with trusty Windows Notepad, and javac (the Java compiler command). You can use any text editor you like, and then compile the code with javac. No, you don’t need to write Java code in an IDE. Advertisements Do you need an IDE to write Java code? Some IDEs add features for running tests, writing documentation, and even creating diagrams.īut coding, compiling and debugging are three core features of any decent IDE. Popular IDEs include Eclipse, IntelliJ and Microsoft Visual Studio.Īn IDE usually includes features which help you to: An IDE helps you organise your software projects, write code, and then test and debug it. What exactly is an IDE?Īn IDE, or Integrated Development Environment, is a program which helps you write software. In this first section, let’s take a look at IDEs in general – what they are, and whether you need one. Here are our favourite IDEs: Java IDE Basics Give you an opinionated view on the best Java IDE to use! The smart code completion is definitely a crowd-pleaser, as it doesn’t just give you random suggestions.When you should use an IDE to write Java While it may freeze if you have low RAM, that’s a minor issue compared to its capabilities. Its platform and features are designed to help you code your programs faster and more efficiently. To sum, IntelliJ IDEA is a very powerful IDE that caters to a lot of programmers and programming languages. A small downside, however-albeit the IDE supporting numerous languages-is that it has a lot of plugins installed, which can make the software freeze or crash if you have low RAM. However, with the Ultimate version, you can use JavaScript, CSS, TypeScript, SQL, SCSS, Sass, Less, Stylus, ActionScript, and CoffeeScript-all without needing plugins. IntelliJ IDEA supports numerous programming languages, including Java, Markdown, Groovy, XSL, Kotlin, HTML, XML, JSON, YAML, Python, and a whole lot more. This can help you speed up your coding process, making your work more efficient. What’s great about the smart completion feature is that it lets you complete static method calls, collections, lists, and arrays. So, if smart completion is disabled, the shortcut command is Ctrl+Shift+Space to turn it on. By default, the IDE already displays the completion pop-up automatically while you type. Now, while the basic completion can practically give you everything, the smart type-matching completion only gives you suggestions that are relevant to the current context. Smart type-matching completion and programming languages Meanwhile, pressing the command three times will expand the suggestion list of the basic code completion to all classes in the project. Pressing Ctrl+Space twice will show inaccessible members, classes, and static fields and methods. The basic code completion appears when you press Ctrl+Space, then it suggests a list of possible names when applied to a part of a field, variable declaration, or parameter. The code completion feature has two types of suggestion lists: Basic completion and smart type-matching completion. It can help you quickly fill a field, access a tool window, set toggles, easily search through a list of numerous elements, and a whole lot more. Aside from that, the IDE also predicts what you need and allows you to automate repetitive development tasks. This basically means that the program can suggest classes, methods, fields, and keywords that are expected in the current code you’re trying to create. IntelliJ IDEA has a lot of features, but its most popular key feature is its smart code completion capability.
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