PrintWriter not printing text to file

Question

I have an assignment to copy the text of one file to another. With the following code, I can print the lines of the file to the console, but it is not working to print to the output file.

      try {
        System.out.print("Enter the file name with extension : ");

        Scanner input = new Scanner(System.in);

        File inputFile = new File(input.nextLine());
        PrintWriter out = new PrintWriter("/Users/jonathanzier/Dropbox/IdeaProjects/CSE_205_Homework1/src/com/company/output.txt");


        input = new Scanner(inputFile);


        while (input.hasNextLine()) {
            out.println(input.nextLine());
           //System.out.println(input.nextLine());  - This will print 
           //correctly to the console
        }
        out.close();


    } catch (FileNotFoundException e) {
        System.out.println("File Not Found");
    }

Answer 1

Print writer uses Buffered writer. It will not write to the disk immediately. When you invoke println , printf , or format methods, it will write to the disk if automatic flushing is enabled. Otherwise you have to invoke flush method to write to disk. Usually invoking close method should write the whatever in the buffer to the file without the need of flush method.

https://docs.oracle.com/javase/7/docs/api/java/io/PrintWriter.html