problem formatting fields in a JTable - differences between Integer and Double

Question

Update

Confirmed as a bug on JTable can\'t format given Object as Number when columnClass is Double (bug ID: 7051636). Feel free to vote for it, or if if you have

Answer 1

The problem is not the double but something else. As you can see in the stack trace, the table has special support for double values (javax.swing.JTable$DoubleRenderer).

The problem us that the value passed to setValue() is not a Double but something else.