append text to the end of the file

Question

I am using the below code segment to write text to the end o the file for each time it is called. But, it is erasing the old data and then writes the new data to the beginning of the file. How can I fix the below code so that it is append new data always end of the file ?

public boolean writeToFile(String directory, String filename, String data ){
    File out;
    OutputStreamWriter outStreamWriter = null;
    FileOutputStream outStream = null;

    out = new File(new File(directory), filename);

    if ( out.exists() == false ){
                out.createNewFile();
    }

    outStream = new FileOutputStream(out) ;
    outStreamWriter = new OutputStreamWriter(outStream); 

    outStreamWriter.append(data);
    outStreamWriter.flush();
   }

Have you looked at http://stackoverflow.com/questions/1625234/how-to-append-text-to-an-existing-file-in-java — Wizche, Feb 14 '13 at 10:16

score 18 · Accepted Answer · answered Feb 14 '13 at 10:17

18

Try to set append boolean value to true in FileOutputStream:

outStream = new FileOutputStream(out, true);
outStreamWriter = new OutputStreamWriter(outStream);

answered Feb 14 '13 at 10:17

Simon Dorociak

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error : `the constructor OutputStreamWriter(FileOutputStream, boolean) is undefined` – mavzey Feb 14 '13 at 10:22
4

look at me answer man, second parameter of `FileOutputStream` not `OutputStreamWriter`. – Simon Dorociak Feb 14 '13 at 10:23

append text to the end of the file

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