StringBuilder ans = new StringBuilder();
	    String output = ans.toString();
	    File outfile = new File("example.txt");
        FileWriter fr = null;
        try {
            fr = new FileWriter(file);
            fr.write(output);
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {
			fr.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}