JTextComponent implements the interface InputMethodRequests, but the following committed text related methods are incorrectly implemented:

cancelLatestCommittedText - currently returns an AttributedString instance which contains null ("") string. This should return null if it does not support the undo-commit functionality.

getCommittedText - currently returns an AttributedCharacterIterator instance that contains null ("") string. This should return a range text that is specified by (begin, end) in the text component.

getCommittedTextLength - currently returns 0. This should return the entire text length in this text component.

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Verified in MB91

###@###.### 2002-01-15
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