Class MimetypesFileTypeMap
- java.lang.Object
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- javax.activation.FileTypeMap
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- javax.activation.MimetypesFileTypeMap
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public class MimetypesFileTypeMap extends FileTypeMap
This class extends FileTypeMap and provides data typing of files via their file extension. It uses the.mime.typesformat.MIME types file search order:
The MimetypesFileTypeMap looks in various places in the user's system for MIME types file entries. When requests are made to search for MIME types in the MimetypesFileTypeMap, it searches MIME types files in the following order:
- Programmatically added entries to the MimetypesFileTypeMap instance.
- The file
.mime.typesin the user's home directory. - The file <java.home>
/lib/mime.types. - The file or resources named
META-INF/mime.types. - The file or resource named
META-INF/mimetypes.default(usually found only in theactivation.jarfile).
MIME types file format:
# comments begin with a '#'
# the format is <mime type> <space separated file extensions>
# for example:
text/plain txt text TXT
# this would map file.txt, file.text, and file.TXT to
# the mime type "text/plain"
- Since:
- 1.6
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Constructor Summary
Constructors Constructor and Description MimetypesFileTypeMap()The default constructor.MimetypesFileTypeMap(InputStream is)Construct a MimetypesFileTypeMap with programmatic entries added from the InputStream.MimetypesFileTypeMap(String mimeTypeFileName)Construct a MimetypesFileTypeMap with programmatic entries added from the named file.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description voidaddMimeTypes(String mime_types)Prepend the MIME type values to the registry.StringgetContentType(File f)Return the MIME type of the file object.StringgetContentType(String filename)Return the MIME type based on the specified file name.-
Methods inherited from class javax.activation.FileTypeMap
getDefaultFileTypeMap, setDefaultFileTypeMap
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Constructor Detail
MimetypesFileTypeMap
public MimetypesFileTypeMap()
The default constructor.
MimetypesFileTypeMap
public MimetypesFileTypeMap(String mimeTypeFileName) throws IOException
Construct a MimetypesFileTypeMap with programmatic entries added from the named file.- Parameters:
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mimeTypeFileName- the file name - Throws:
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IOException
MimetypesFileTypeMap
public MimetypesFileTypeMap(InputStream is)
Construct a MimetypesFileTypeMap with programmatic entries added from the InputStream.- Parameters:
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is- the input stream to read from
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Method Detail
addMimeTypes
public void addMimeTypes(String mime_types)
Prepend the MIME type values to the registry.- Parameters:
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mime_types- A .mime.types formatted string of entries.
getContentType
public String getContentType(File f)
Return the MIME type of the file object. The implementation in this class callsgetContentType(f.getName()).- Specified by:
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getContentTypein classFileTypeMap - Parameters:
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f- the file - Returns:
- the file's MIME type
getContentType
public String getContentType(String filename)
Return the MIME type based on the specified file name. The MIME type entries are searched as described above under MIME types file search order. If no entry is found, the type "application/octet-stream" is returned.- Specified by:
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getContentTypein classFileTypeMap - Parameters:
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filename- the file name - Returns:
- the file's MIME type
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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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