Is there a way to generate a Content-Type header from a file extension in Java?

Question

I have a Java application that sometimes needs to generate a Content-Type header from a single file name. Is there a way to evaluate Content-Type for common extensions? (for example, ".pdf" displays "application / pdf", etc.)

Answer 1

Yes, URLConnection.guessContentTypeFromName does just that.

Answer 2

Yes, through the JavaBeans Activation Framework (javax.activation).

import java.io.File;
import javax.activation.MimetypesFileTypeMap;
...
return new MimetypesFileTypeMap().getContentType(new File("brognitz.jpg"));

, Java .

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Answer 3

A hash table that you loaded using generic types ?