Create New File Type resolver and associate the data type in Netbeans

1. make a new xml Document ( eg, PdbResolver)

2.choose DTD Constrained Documenton the second page of the new Xml Document wizard

3. On third page, in the DTD Public Id, choose, -//NetBeans//DTD MIME Resolver 1.0//EN,  from the drop down menu

4. save it

5. make a new java file , call it as DataObject ( eg: PdbDataObject), write ur code...

6. save it, and add

 @MIMEResolver.Registration(displayName = "PdbResolver", resource = "/alifea/gui/PdbResolver.xml")

for registering the mime tyoe to the data object file

7. In the layer file add
                <folder name="x-pdb">
 <folder name="Factories">
                    <file name="PdbDataLoader.instance">
                        <attr name="dataObjectClass" stringvalue="alifea.gui.filesystem.PdbDataObject"/>
                        <attr name="instanceCreate" methodvalue="org.openide.loaders.DataLoaderPool.factory"/>
                        <attr name="mimeType" stringvalue="text/x-pdb"/>
                    </file>
                </folder>
                </folder>

under the folder name :    <folder name="Loaders">

to register the data object as the loader of the file type

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