In this tutorial, we explored how to utilize IntelliJ IDEA's Data Type Renderers to improve the debugging experience for Java developers. By customizing how data types are displayed, you can make debugging more intuitive and efficient.

Feb 14, 2014 · With IDEA 2016.3 it's finally possible to define custom Java Data Type Renderers for primitive types (including arrays). https://www.jetbrains.com/idea/whatsnew/#v2016-3. There is an option (checkbox) to permanently change all primitives to display as Hex under the options for Data Views. See:

Use custom renderers to define how specific types should be displayed based on their properties. Utilize existing renderers provided by IntelliJ IDEA for various data types, such as collections and maps. Implement the `java.lang.String` renderers to customize string displays.

Nov 25, 2016 · I'd like to be able to toss together a list of projections for the byte array. I'm using IntelliJ's Data Type Renderers view, applying the renderer to type byte[], and I'm primarily concerned with the List of Expressions box.

Dec 9, 2016 · I want to customize the way the IntelliJ debugger display the value of Set objects. Therefore I created a new Java Data Type Renderers in the Customize Data Views dialog and pasted this code into the Use following expression field:

Apr 9, 2018 · Using IntelliJ IDEA’s custom type renderers we can define how we want our objects to be rendered inside the debugger. In order to explain how this “magic” works, I am going to use a simple...

Mar 31, 2017 · Is there any way to reuse existing data type renderer expressions? Yes, I could manually create renderer expressions in MySubFruit that use parent class members. And, I could also manually create expressions in MyFruitWrapper that use the "this.fruit" method to get access to the wrapped object's members/methods.

Apr 24, 2025 · In this example, we can fix our input data ourselves. If you are dealing with user input that you can’t change, consider adding validation to the code, for example, that test scores cannot be negative. Final check. Let’s run our application one …

Mar 20, 2023 · In this blog post, I’ll try to answer these questions by using hands-on practical examples for busy developers like you. You’ll be surprised to discover how useful records are when used with other modern Java features like Record Patterns and Sealed Classes. Let’s get started with our first example. 1.

Nov 19, 2015 · I've read every post about type renderers, and there seems to be a dirth of substantive responses. The help documentation is typically light on examples. I want to be able to view a byte array as an image in the debugger.