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Debugger: working with sub-ranges for arrays and lists

denis.zhdanov
denis.zhdanov

During debugging IntelliJ IDEA shows only the first 100 elements of arrays and collections. It’s enough in most cases. However, it’s sometimes convenient to use a custom range. Exactly for this the ‘Adjust Range’ action has been available for arrays for quite a long time. But recently we’ve made a couple of improvements to it. Namely:

  • ‘Adjust Range’ works with lists now
  • adjusted range is preserved for local variables delivered to another stack frame

Quick demonstration example:

  1. Start debugger and wait until target break point is hit;
  2. Right click on target array/list and select the ‘Adjust Range…’ action:
  3. Define a range:
  4. Check the result:
debugger
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