Updated specification for javax.swing.JList method "addSelectionInterval(int index0, int index1)" contains two assertions:

"This method does nothing if either index is -1."
and
"If either index is less than -1, an IndexOutOfBoundsException is thrown."

The second sentence must mention that it's true only if another index != -1, i.e. this two sentences must be tightly linked together or combined into one.
Currently

        new JList().addSelectionInterval(-3, -1);

would not throw exception and this behavior looks very confusing.