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BladeOfDeath

Sat Jan 08, 2005 9:51 pm


NullPointerException

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I get this error every time I something with the paint command in "Ready To Program" which is the program I must use for my computer science course. A little help would be appreciated, if I could fix this problem I could get extra marks on my ISU.


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wtd

Sat Jan 08, 2005 9:58 pm



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Use the API reference: http://java.sun.com/j2se/1.4.2/docs/api/java/lang/NullPointerException.html


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BladeOfDeath

Wed Jan 12, 2005 12:44 pm



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okay I looked at the site but I don't know how to fix it, mind telling me how?


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wtd

Wed Jan 12, 2005 6:23 pm



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My guess is that somewhere you've declared an object-type variable, but haven't used "new" to create it.  Like:

StringBuffer sb;

sb.append("Hello");

instead of:

StringBuffer sb = new StringBuffer();

sb.append("Hello");


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BladeOfDeath

Wed Jan 12, 2005 6:41 pm



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Well... I think it has something to do with the Image variables or something, because I've never had this error unless using graphics. I'll attach a copy of the code if you wanna check it out for yourself (the images are not enclosed).


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wtd

Wed Jan 12, 2005 6:48 pm



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Can I see a full copy of the error?


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BladeOfDeath

Thu Jan 13, 2005 12:12 pm



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it only shows at home, but when i get home ill send it. Thanks for the help though


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MrPenisJr.

Thu Jan 13, 2005 6:19 pm



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Just use some Java source code!

--MrPenisJr.