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java.lang.NullPointerException
at com.package.name.classname.methodname(+n1)
at blablabla (+n2)
When the application throws an exception IntelliJ Idea show the following lines. How can I find which line has thrown this exception? I thought that n1 is the line’s number but it’s not – it’s an empty line. So how can I find that line and what’s n1?
A class which has been loaded is not the same as you are looking the source code. E.g. different versions of binary and sources.
Sometimes the same class appears several times under classpath.
Sometimes a debugger could show wrong line if file has mix of cr/lf (however never seen it with the IDEA).
Sometimes a build-time or run-time instrumentation could confuse a debugger.