When ever a "null" is used when an object is required, a NullPointerException is thrown. To avoid this we need to be careful while assiging object references and creating structures.Explicit check on the null references before they are used can avoid such exceptions.
Joined: Feb 09, 2003
sorry..a correction...it is a null not a string "null".
Jyotsana , NullPointerEception is thrown whenever you use dot(.) with and variable which is object and contains null value. say you have String s=null; and you say s.substring(); this is same as null.substring(); which throws an nullpointer exception. In your case I guess you are getting null pointer exception during creating connection. just chek if your connection object is not null before createing statment like..stmt=con.createStatement(); Cheers Praful
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