How to catch Java Exception thrown on call of Update() on locked element

[Pegasus]

Hallo,
currently I don't know what doing wrong (maybe lack on knowledge of java). I run Update() on a locked element (HybridScript in JAVA) and get an exception

Exception in thread "main" java.lang.Exception: Element locked
at org.sparx.Element.comUpdate(Native Method)
at org.sparx.Element.Update(Element.java:1077)

I surround the elem.SetName and following Update-call with try ... catch (Exception e) and get the message displayed, I put inside catch-block. But nevertheless the script ends with the (stacktrace) messages above. What I expect is, that I can catch the exception and coninue in script sequence. Maybe I catch the wrong Exception-Type. But if so, what will be the right one? I don't know a source describing the JAVA API

Thanks for support

Pegasus