Editing Adapter pattern (section)

====Motivation from compile time solution====
It is desired for {{Java|classA}} to supply {{Java|classB}} with some data, let us suppose some {{Java|String}} data. A compile time solution is:

<syntaxhighlight lang=Java>
classB.setStringData(classA.getStringData());
</syntaxhighlight>

However, suppose that the format of the string data must be varied. A compile time solution is to use inheritance:

<syntaxhighlight lang=Java>
public class Format1ClassA extends ClassA {
    @Override
    public String getStringData() {
        return format(toString());
    }
}
</syntaxhighlight>

and perhaps create the correctly "formatting" object at runtime by means of the [[factory pattern]].