Is possible to make Serializable a Connection object?

Question

Hi I would like to know if is possible to make Serializable a Connection Object, I would like to save the Connection object into a text file so other class can read it and execute a proper query. If is possible how can I do it?.
Thanks.

Answer 1

Actually, if a class isn't already Serializable, you can't make it become Serializable reliably. Consider the following case:
class A
    int x = 0;
    public void setX(int new_x) { x = new_x; }
    public int getX() { return x; }
class B extends A implements Serializable
    int y = 0;
    public void setY(int new_y) { y = new_y; }
    public int getY() { return y; }
public static void main(String arg[]) throws Exception
    B b = new B();
    b.setX(10);
    b.setY(12);
    someObjectOutputStream.writeObject(b);
}The problem with this is that the implementation of Serializable by class B does not affect class A. In the above example, the ObjectInputStream that obtains the instance of B will have a y value of 12, but an x value of 0 (not 10).
Thus, unless the Connection object implemented Serializable to begin with, it can't become Serializable. And, as the above post has described, the implementers of the Connection object would not make it Serializable as the local Connection object uses underlying O/S resources which cannot simply be transformed into a byte array.