Eclipse Tips & Tricks: Detail Formatter « Robert Wloch



Eclipse Tips & Tricks: Detail Formatter « Robert Wloch

You find yourself debugging a Java app with Eclipse and you’re stepping through the code in the Debug perspective. You have the Variables view open and for most of the selected types you can see a reasonable toString() output below the variables list.

However, many types don’t have a type specific implementation of toString(). E.g., consider an array of objects. There’s no toString() on arrays. That’s why the variables view prints you some meaningless default text with a hashcode for such variables.

But did you know that you can change that by defining a custom toString() implementation that’s used by the variables view at runtime? Let me introduce you to the concept of Detail Formatters and learn about the Display view along the way, too.


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