UnsupportedOperationException at java.util.AbstractList.add

Question

I\'m having issues getting a block of code to run properly. I\'m not entirely sure WHAT this code does (I\'m trying to get a plugin that\'s out of date to work properly with

Answer 1

The problem is you are creating your lists with Arrays.asList. Per the javadoc provided, the returned list is a Fixed Size, therefore add would be unsupported. Wrap the returned list in a copy constructor for arrayList and you should be set.