I was trying to read a file in java. However my code has a problem and I received errors. It was because I used a relative path to access file. However the following link helped me to resolve the problem.
The part that helped me was:
EVALUATION Not a bug. If you need to resolve a filename against the value of the "user.dir" system property then you must use getAbsolutePath (or getAbsoluteFile, or getCanonicalPath, or getCanonicalFile). Simpler operations such as exists() always resolve against the directory in which the Java virtual machine was originally invoked (and no, there is no way to change that). -- mr@eng 2001/7/23