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copied!<p>First, serialization is writing the object to a file 'as it is'. AFAIK, you cannot choose file formats and all. The serialized object (in a file) has its own 'file format'</p> <p>If you want to write the contents of an object (or a list of objects) to a CSV file, you can do it yourself, it should not be complex.</p> <p>Looks like <a href="http://sourceforge.net/projects/javacsv/" rel="noreferrer">Java CSV Library</a> can do this, but I have not tried this myself.</p> <p><strong>EDIT</strong>: See following sample. This is by no way foolproof, but you can build on this.</p> <pre><code> //European countries use ";" as //CSV separator because "," is their digit separator private static final String CSV_SEPARATOR = ","; private static void writeToCSV(ArrayList<Product> productList) { try { BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("products.csv"), "UTF-8")); for (Product product : productList) { StringBuffer oneLine = new StringBuffer(); oneLine.append(product.getId() <=0 ? "" : product.getId()); oneLine.append(CSV_SEPARATOR); oneLine.append(product.getName().trim().length() == 0? "" : product.getName()); oneLine.append(CSV_SEPARATOR); oneLine.append(product.getCostPrice() < 0 ? "" : product.getCostPrice()); oneLine.append(CSV_SEPARATOR); oneLine.append(product.isVatApplicable() ? "Yes" : "No"); bw.write(oneLine.toString()); bw.newLine(); } bw.flush(); bw.close(); } catch (UnsupportedEncodingException e) {} catch (FileNotFoundException e){} catch (IOException e){} } </code></pre> <p>This is product (getters and setters hidden for readability):</p> <pre><code>class Product { private long id; private String name; private double costPrice; private boolean vatApplicable; } </code></pre> <p>And this is how I tested:</p> <pre><code>public static void main(String[] args) { ArrayList<Product> productList = new ArrayList<Product>(); productList.add(new Product(1, "Pen", 2.00, false)); productList.add(new Product(2, "TV", 300, true)); productList.add(new Product(3, "iPhone", 500, true)); writeToCSV(productList); } </code></pre> <p>Hope this helps.</p> <p>Cheers.</p>

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