Select ‘Adjust code style settings’, followed by ‘Align when multiline’, and invoke ‘Save’: You can either use Reformat File Dialog (Shift + Ctrl + Alt + L) and Run it, or invoke Context Actions using Alt + Enter. Use Extend Selection (Ctrl + W) to quickly select the text block contents. You can align your uneven Text Blocks with ease. You can also invoke Context Actions to convert a Text Block to a regular String literal and vice-versa: This essentially means that you can call all String methods on it: They are compiled to regular String instances ( ). Java isn’t adding a variation of type String with Text Blocks. To add them forcefully, you can use \040: By default, the trailing white spaces are removed in Text Block values. Here’s how the vertical bar in IntelliJ IDEA lets you visualize the starting position of your Text Block values. IntelliJ IDEA helps you view this position – using a vertical line – a feature that I absolutely love about Text Block’s support in IntelliJ IDEA. What rules does the compiler follow to include or exclude these white spaces? In Text Blocks, the leftmost non-whitespace character on any of the lines or the leftmost closing delimiter defines where meaningful white space begins. You would usually add spaces to your values to align them vertically in your code. Also, IntelliJ IDEA 2019.3 makes it easier for you to adopt this new language feature. Text Blocks take off the visual clutter from multiline strings which existed in the form of concatenation operators and escape sequences. "Hey!", would you prefer a cup of coffee? I'm a long String value, which can't fit on a Stop generating 6 million tons of plastic wasteĪnd here’s just a long line of String, stored using Text Blocks: Here’s an example of a Text Block storing a HTML value: You can also use them for plain long String values that span multiple lines, without using the concatenation operators. You could also use Text Blocks to store values that usually span multiple lines like – XML, HTML, or code. In the preceding sections, we used Text Blocks to store JSON and SQL query. IntelliJ IDEA can detect this missing line terminator and prompt you to correct it: A Text block value begins ‘after’ this line terminator. The text block content gets appropriate indent right from the start:Ī quick rule to follow here – The opening delimiter can be followed by zero or more whitespaces, but it must be followed by a line terminator. Unlike the double quotes ( ") used by the traditional String values, Text Blocks use three double quotes ( """) as it’s opening and closing delimiters. Here’s capturing the journey – from the pain points of defining multiline String values to the ease of using Text Blocks: With Text Blocks you can store the multiline String values, as follows: A preview language feature, they avoid the need of using concatenation operators and (most) escape sequences for String values that span more than one line. Text Blocks, or multiline String values, are simple to create, read and edit. This format is not simple to write, read or edit. To retain the formatting of the JSON object, you also need to add whitespaces like new line, tabs or spaces. To use double quotes within a String value, it must be escaped using a backslash (since “ is also used as a delimiter for String value). You need concatenation operators at the end of each line. It is easy to notice how the values and the code that store it, are not the same. " \"result\": \"Let planet simply live\"\n" + One of the ways to store it is to use a multi-line String value, as follows: Imagine you had to store the following JSON text in your Java code: Multi-line String values prior to Java 13 Let’s get started with the pain points that are being taken care of with Text Blocks. If you can’t migrate your code to Java 13 to use Text Blocks, this blog will also cover how to use language or reference injections, so that you can edit multi-line String values with ease, irrespective of the Java version you are using. In this blog, you’ll cover how to use the language changes introduced with Java 13, in IntelliJ IDEA 2019.3. Java 13 has also modified the Switch Expressions, which was released with Java 12. You would no longer need concatenation operators or escape sequences for your HTML, XML, JSON, or SQL queries, stored as String values. With Text Blocks, Java 13 is making it easier for you to work with multi-line String values.
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