The ILOG JViews library provides the following two classes for saving graphic objects to, and loading graphic objects from, a stream:

Graphic objects can always be written into an IlvOutputStream because they inherit the write method of the IlvGraphic class:

To save the information contained in your class, you can override this method and use the methods of the class IlvOutputStream. When overriding this method, you must not forget to call the write method of the superclass to save the information related to the superclass. You will obtain something that resembles the following example:

public void write(IlvOutputStream stream) throws IOException 
{
  // write fields of super class
  super.write(stream);
  // write fields of my class
  stream.write("color", getColor());
  stream.write("thickness", getThickness());
  ....
}

Assuming that MyClass is the name of your class, your new constructor will look like this:

public MyClass(IlvInputStream stream) throws IlvReadFileException

In the body of this constructor, you first call the corresponding constructor in the superclass, then you read the information you have saved in the write method. In the above example, the corresponding constructor is:

public MyClass(IlvInputStream stream) throws IlvReadFileException 
{
  super(stream); 
  setColor(stream.readColor("color")); 
  setThickness(stream.readInt("thickness")); 
  ...
}