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## com.sun.interview
Class ExtensionFileFilter

    java.lang.Object
      com.sun.interview.ExtensionFileFilter

All Implemented Interfaces:
  FileFilter

    public class ExtensionFileFilter

extends java.lang.Object
implements FileFilter

A filter which accepts files based on their extension.

Constructor Summary
`ExtensionFileFilter(java.lang.String[] extns, java.lang.String description)` Create a filter which accepts files based on their extension.
`ExtensionFileFilter(java.lang.String extn, java.lang.String description)` Create a filter which accepts files based on their extension.

Method Summary
`boolean` | `accept(java.io.File f)` Check if a file is accepted by this filter.
`boolean` | `acceptsDirectories()` Check if (all) directories are accepted by this filter.
`java.io.File` | `ensureExtension(java.io.File file)` Ensure that a filename ends with one of the extensions accepted by this filter.
`java.lang.String` | `ensureExtension(java.lang.String path)` Ensure that a pathname ends with one of the extensions accepted by this filter.
`java.lang.String` | `getDescription()` Get a short description for this filter.
`boolean` | `isCaseSensitive()` Check whether or not this filter should perform case-sensitive matching for extensions.
`void` | `setCaseSensitive(boolean b)` Specify whether or not this filter should perform case-sensitive matching for extensions.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### ExtensionFileFilter

    public ExtensionFileFilter(java.lang.String extn,
                               java.lang.String description)

  Create a filter which accepts files based on their extension.

  Parameters:
    `extn` - The required extension for files that are to be accepted by this filter.
    `description` - A short string describing the filter.

### ExtensionFileFilter

    public ExtensionFileFilter(java.lang.String[] extns,
                               java.lang.String description)

  Create a filter which accepts files based on their extension.

  Parameters:
    `extns` - Any array of permissable extensions for files that are to be accepted by this filter.
    `description` - A short string describing the filter.

Method Detail

### setCaseSensitive

    public void setCaseSensitive(boolean b)

  Specify whether or not this filter should perform case-sensitive matching for extensions.

  Parameters:
    `b` - true if this filter should perform case-sensitive matching for extensions, and false otherwise
  See Also:
    `isCaseSensitive()`

### isCaseSensitive

    public boolean isCaseSensitive()

  Check whether or not this filter should perform case-sensitive matching for extensions.

  Returns:
    true if this filter should perform case-sensitive matching for extensions, and false otherwise
  See Also:
    `setCaseSensitive(boolean)`

### accept

    public boolean accept(java.io.File f)

  Description copied from interface: `FileFilter`
  Check if a file is accepted by this filter.

  Specified by:
    `accept` in interface `FileFilter`
  Parameters:
    `f` - The file to be tested.
  Returns:
    true if the file is accepted by this filter

### acceptsDirectories

    public boolean acceptsDirectories()

  Description copied from interface: `FileFilter`
  Check if (all) directories are accepted by this filter.

  Specified by:
    `acceptsDirectories` in interface `FileFilter`
  Returns:
    true if directories are accepted by this filter

### getDescription

    public java.lang.String getDescription()

  Get a short description for this filter.

  Specified by:
    `getDescription` in interface `FileFilter`
  Returns:
    a short description of this filter

### ensureExtension

    public java.lang.String ensureExtension(java.lang.String path)

  Ensure that a pathname ends with one of the extensions accepted by this filter. If it does not, one is appended

  Parameters:
    `path` - The path to be checked.
  Returns:
    the original path if it already ended with a valid extension, or if it was null or empty; otherwise, a copy of the path is returned, with a valid extension added on.

### ensureExtension

    public java.io.File ensureExtension(java.io.File file)

  Ensure that a filename ends with one of the extensions accepted by this filter. If it does not, one is appended

  Parameters:
    `file` - The file to be checked.
  Returns:
    the original file if it already ended with a valid extension, or if it was null or empty; otherwise, a new file is returned, whose path is a copy of the original, with a valid extension added on.

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