Detail formatter error, Java Eclipse Indigo SR1

Question

This question refers to using Eclipse Indigo SR1 on Windows 7 to write Java code. I've declared an array of objects (an array of IloNumExpr, I'm writing some CPLEX optimization code, but I don't think that matters). After declaring them (putting a breakpoint on the next line), when I mouse over the array of IloNumExpr in the debugger, I see the message

Detail formatter error: 
  An exception occurred: java.lang.ArrayIndexOutOfBoundsException

but when I look at individual elements in the array, they are all null, and when I loop through them and assign each of them, I don't get any kind of error at all. After they're assigned, Eclipse still tells me the same detail formatter error, but every element has been assigned as I expect it to be, and when I pass this array to other methods everything works as I expect.

What does this mean? Should I be concerned?

Answer 1

Error states that it comes from Detail Formatter ( Window/Preferences/Java/Debug/Detail Formatters or right click in Variables view on an array variable and choose Edit Detail Formatter ).

You can remove or disable formatters that you don't want to use longer.

Answering your main question:
This error means only that detail formatter ends with an error instead of producing output to be printed.
Nothing to be worried about.

Answer 2

I got this message too.
At first I used:

this.arr = Arrays.copyOfRange(arr,0,counter);

this.arr was null , so it helped when I added:

this.arr = new String[counter];
this.arr = Arrays.copyOfRange(arr,0,counter);