Weird cntrl character showing up within Java code

Hi: I have a varchar field in a oracle table which has some special characters towards the end. if I do a select on that record field from sqlplus command, it doesn't show me the special character. But the java program I have sees it as ^Z. But if I try to use the strip function it doesn't see the special character as well. Any suggestions on how I can remove the special character from the string.
Thanks
Ravi

Can you convert the column value to hex and inspect it that way? Most special characters won't show up. Once you figure out what the actual value is you should be able to strip it out easily enough.
Cheers, Max

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