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Message:

Illegal Cast

Posted by John Mac on January 21, 2002 at 6:49 PM

Just like the error message says. You made a illegal cast.

javax.swing.text.StateInvariantError: Illegal cast to MutableAttributeSet

> Hi!

> When I try play with DefaultStyledDocument's element structure I get the following Error:

> javax.swing.text.StateInvariantError: Illegal cast to MutableAttributeSet
> at javax.swing.text.AbstractDocument$AbstractElement.checkForIllegalCast(AbstractDocument.java:1653)
> at javax.swing.text.AbstractDocument$AbstractElement.addAttributes(AbstractDocument.java:1586)
> at javax.swing.text.AbstractDocument$AbstractElement.(AbstractDocument.java:1369)
> at javax.swing.text.AbstractDocument$LeafElement.(AbstractDocument.java:2085)
> at javax.swing.text.AbstractDocument.createLeafElement(AbstractDocument.java:922)
> at javax.swing.text.DefaultStyledDocument$ElementBuffer.fractureDeepestLeaf(DefaultStyledDocument.java:2082)
> at javax.swing.text.DefaultStyledDocument$ElementBuffer.insertUpdate(DefaultStyledDocument.java:1319)
> at javax.swing.text.DefaultStyledDocument$ElementBuffer.insert(DefaultStyledDocument.java:1211)

> What have I done wrong?
> Is it illegal to use MutableAttributeSets?
> How can I get Im-MutableAttributeSets? It seems very complicated since most of the instantiable classes implement MutableAttributeSet.

> Regards,
> Laura

• stfu morpheus February 13, 2002 at 1:32 PM (0)