java - Getting value of unknown component -

i building gui's input dynamically based on type of input required, example:

if require doubleand boolean type of components gui creates jtextfield , jradiobutton.

i define want each type's input method statically so:

private static map<inputtype, class<? extends component>> typecomponentmap = new hashmap<inputtype, class<? extends component>>();  static {     typecomponentmap.put(inputtype.integer, jtextfield.class);     typecomponentmap.put(inputtype.double, jtextfield.class);     typecomponentmap.put(inputtype.boolean, jradiobutton.class);     typecomponentmap.put(inputtype.string, jtextfield.class); } 

i facing problem when trying read value of component 1 of types (into stream)

my method looks this:

public static void writecomponentvalue(objectoutputstream stream, inputtype type, component component) 

now there's no method getvalue in java.awt.component, can see 1 option check subclass using instanceof , go there... hoping there's better way?

the created stream intended passed object intended not know how information gui.

you can implement interface requires getinput method , make subclasses of jcomponents implement interface.