Question

I am trying to save a file in Java in this way:

PrintWriter output = null;
int x=5, y = 6;
try {               
    saveFile = new FileOutputStream("myFile.txt");
    save = new ObjectOutputStream(saveFile);    
    save.writeObject(x + y);
    save.close();                   
} catch (FileNotFoundException e) 
{               
    e.printStackTrace();
} catch (IOException e) 
{
    e.printStackTrace();
}

and it is working but how can I save an object from another class because it is giving me an error when I try to do it.

Answer 1

Like the others say, plenty of things that might be problematic … However serialization is one way to store a object in a file and read it back to a object from a file.

http://www.java-samples.com/showtutorial.php?tutorialid=398