How to read a File using FileInputStream compatible in all OS

Question

I am having a file and i need to read it using FileInputStream in java. I need to give the path which should be readable in all OS. Now i have given

(new FileInputStream("..\\config.properties"));

which is a windows readable format But this is a non readable in Unix.

Is there any way common for all OS.

i don't know if this would help or not http://stackoverflow.com/questions/3548775/platform-independent-paths-in-java — insomniac, Dec 10 '13 at 04:16
Refer to these already answered questions. http://stackoverflow.com/questions/17092260/fileinputstream-how-to-take-a-path-directly-without-adding-escape-characters http://stackoverflow.com/questions/9953328/weird-exception-in-thread-main-java-io-filenotfoundexception-i-o-java — user1933888, Dec 10 '13 at 04:17

score 4 · Answer 1 · answered Dec 10 '13 at 04:30

4

You have two options:

For standalone classes you can use:

 new FileInputStream("../config.properties")

For classes in JAR file you can use:

InputStream input = getClass().getResourceAsStream("../config.properties");

This should help.

answered Dec 10 '13 at 04:30

aryann

score 2 · Answer 2 · answered Dec 10 '13 at 04:18

2

Yes. Instead of

new FileInputStream("..\\config.properties")

This should work everywhere

new FileInputStream("../config.properties")

Or you could use

new FileInputStream(".." + java.io.File.separator + "config.properties")

answered Dec 10 '13 at 04:18

Elliott Frisch

Hi Elliott, if am giving this class inside a jar will this work? – M.M.RAM KUMAR Dec 10 '13 at 04:22
That's not a class, it's a text file. What are you asking? – Elliott Frisch Dec 10 '13 at 04:24
`config.properties` is a text file. This is how you access a File on your filesystem, not how you access a properties file in a JAR file. – Elliott Frisch Dec 10 '13 at 04:26

2 Answers2