CODEWITHSUNDEEP
javaeclipsefile-io
Biscuit128
Biscuit128

Reputation: 5398

How to load a text file from a runnable jar

If i have a project which has a text file inside of it and i want to be able to read this text file which will be stored in my runnable jar then how can i do this? Currently i have a setup like this

public void someMethod()
{
    File f = new File("aFileInEclipseResourcesFolder.txt");

    doSomethingWithFile(f);
}

private void doSomethingWithFile(File f)
{
    //print the data in the file;
}

The issue is the application cant locate the file if i use this approach but if i use a hard coded path to the file then it works. I know you can use getClass().getResourceAsStream() but this wont allow me to get the already written file in to a file object without rewriting it again, or is this assumption incorrect?

Regards

Upvotes: 1

Views: 1100

Answers (3)

Joop Eggen
Joop Eggen

Reputation: 109547

The getResourceAsStream delivers an InputStream you can use, just as a FileInputStream. You then can use:

InputStream is = getClass().getResourceAsStream("a/b/c/aFileInEclipseResourcesFolder.txt");
BufferedReader in = new BufferedReader(new InputStreamReader(is, "UTF-8")); // Or "Cp1252"?
...

Upvotes: 1

Danny
Danny

Reputation: 7518

You don't want to use getResourceAsStream() you want

public URL getResource(String name)

the URL will give you the path to the resource and you can create a File object from that.

Upvotes: 0

Haedrian
Haedrian

Reputation: 4328

When I had this problem around a year ago the only solution I found was finding the location of the jar file (which is actually just a zip file), going through it and finding the file I wanted.

There are better methods around but they never worked for me (go figure), so keep this as a last resort.

Upvotes: 0

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