Java - how do I write a file to a specified directory

user726219 picture user726219 · Apr 27, 2011 · Viewed 214.2k times · Source

I want to write a file results.txt to a specific directory on my machine (Z:\results to be precise). How do I go about specifying the directory to BufferedWriter/FileWriter?

Currently, it writes the file successfully but to the directory where my source code is located. Thanks

    public void writefile(){

    try{
        Writer output = null;
        File file = new File("results.txt");
        output = new BufferedWriter(new FileWriter(file));

        for(int i=0; i<100; i++){
           //CODE TO FETCH RESULTS AND WRITE FILE
        }

        output.close();
        System.out.println("File has been written");

    }catch(Exception e){
        System.out.println("Could not create file");
    }
}

Answer

Kaushik Shankar picture Kaushik Shankar · Apr 27, 2011

You should use the secondary constructor for File to specify the directory in which it is to be symbolically created. This is important because the answers that say to create a file by prepending the directory name to original name, are not as system independent as this method.

Sample code:

String dirName = /* something to pull specified dir from input */;

String fileName = "test.txt";
File dir = new File (dirName);
File actualFile = new File (dir, fileName);

/* rest is the same */

Hope it helps.