Serialize Array in Java

For Serializing Array we can use ObjectOutputStream/ObjectInputStream classes.

NOTE: An ObjectInputStream deserializes primitive data and objects previously written using an ObjectOutputStream.


public class SerializeArray {
    public static void main(String[] args) {

        String[][] twoD = new String[][]{new String[]{"Alex", "Hyde"},
                new String[]{"Rohan", "Disuza"}};

        String[][] newTwoD = null; // will deserialize to this

        System.out.println("Before serialization");
        for (String[] arr : twoD) {
            for (String val : arr) {
                System.out.println(val);
            }
        }

        try {
            FileOutputStream fos = new FileOutputStream("test.dat");
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(twoD);

            FileInputStream fis = new FileInputStream("test.dat");
            ObjectInputStream iis = new ObjectInputStream(fis);
            newTwoD = (String[][]) iis.readObject();

        } catch (Exception e) {

        }

        System.out.println("After serialization");
        for (String[] arr : newTwoD) {
            for (String val : arr) {
                System.out.println(val);
            }
        }
    }
}