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How to manually find the file path for an android file?
try
    {
        final String testString = new String("Hello");
        FileOutputStream fOut = openFileOutput("samplefile.txt",
                MODE_WORLD_READABLE);
        OutputStreamWriter osw = new OutputStreamWriter(fOut);

        osw.write(testString);
        osw.flush();
        osw.close();
    }
    catch(IOException ex)
    {

    }