tested java version:
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta3-b56)

TextMeasurer deleteChar function will get exception if you try to delete more than one characters. 

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException
        at java.lang.System.arraycopy(Native Method)
        at java.awt.font.TextMeasurer.deleteChar(TextMeasurer.java:721)
        at TextMeasureDeleteTest.main(TextMeasureDeleteTest.java:31)

It seems that source array index was set wrong if the deleted characters > 1.

See attached test case.

N/A

I don't think this test can ever have passed, since its buggy. It fails
on 1.3.X too.

The test calls deleteChar which is used to replace the current paragraph
with a new one with a single character deleted.
To quote the javadoc
"Updates the TextMeasurer after a single character has been deleted .."
                                  ^^^^^^^
But the new text has two characters deleted and so is testing something
that's not supposed to work.

The only very minor problem I see here is that the docs whilst documenting
that this method can throw IOBE, don't explain it very well.
I'll let the engineer who owns this class decide how to handle it.

  xxxxx@xxxxx   2004-06-17
============================

Contribution forum : https://jdk-collaboration.dev.java.net/servlets/ProjectForumMessageView?forumID=1463&messageID=13413
Posted Date : 2006-06-08 06:02:44.0