How can I set extensions in "File of type" field in JFileChooser

I am using JFileChooser to get the file for opening or saving activities.
I want to restrict the user for file type... during opening or saving a specific file.
Bydefault it is set to "All types *.*". Instead of *.* I want to add options like *.doc, *.txt.
secondly when a user double clicks on a directory, its name appear in the File name text box. I want to disable this. I want to initially set a file name their, which will change only when the user clicks in that text field and type a file name.
Kindly help me regarding this problem.

You can restrict the file types by using the javax.swing.filechooser.FileFilter
Look up the API docs for details.
I'm not sure how you would restrict the user from double-clicking on a directory.

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The 'Suggestions and Feedback for the Forums' forum is to give users a voice on Forums. Users can give suggestions for improvements or vote up suggestions and know that the Forums team is listening.
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