[Java] Setting Path Directory on File Reader

Answer 1

When reading resources from a JAR file, you cannot use the File API. Instead, you use Class.getResourceAsStream(), like this:

reader = new InputStreamReader(MyClass.class.getResourceAsStream(
    "/apathdir/textFile.txt"), "UTF-8");

Note also how the encoding is specified. FileReader does not allow that, which is why it should usually be avoided.

Answer 2

Iwant to know, if fileName = "textFile.txt", what is the path dir of this file?

If you only use a bare file name (without giving a directory), the JVM will look for the file in the current directory of the JVM process; that is usually the directory you ran the JVM (the java executable) from.

how do i do to set /apathdir/textFile.txt?. apathdir is a directory that is inside jar file. I tried: fileName = "/apathdir/textFile.txt", but doesn't works.

If you want to load a file from inside a JAR file, you cannot load it using FileReader. You need to use ClassLoader.getSystemResourceAsStream() (or Class.getResourceAsStream). See e.g. this article for an explanation:

http://www.devx.com/tips/Tip/5697