try {
                File file =new File("C:\test\working.csv");

                System.out.println("create new file"+(int)file.length());
                if(!file.exists()){
                    file.createNewFile();
                }
                FileWriter fw = new FileWriter(file,true);

            // No need give the headers Like: id, Name on builder.append
                BufferedWriter bw = new BufferedWriter(fw);
                PrintWriter pw = new PrintWriter(bw);
                if((int)file.length()==0) {
                String header = "Name"+'t' +"Desc"+'t'+"check"+'t';
                bw.write(header);
                }
                bw.append('n');
                bw.write("test");
                bw.append('t');
                bw.write("happy");
                bw.append('t');
                bw.write("working");
                bw.close();
                System.out.println("Data successfully appended at the end of file");

            }