org.apache.commons.io.filefilter

Class SuffixFileFilter

java.lang.Object

org.apache.commons.io.filefilter.AbstractFileFilter

org.apache.commons.io.filefilter.SuffixFileFilter

All Implemented Interfaces:

FileFilter, FilenameFilter, Serializable, FileVisitor<Path>, PathFilter, PathVisitor, IOFileFilter

public class SuffixFileFilter
extends AbstractFileFilter
implements Serializable

Filters files based on the suffix (what the file name ends with). This is used in retrieving all the files of a particular type.

For example, to retrieve and print all *.java files in the current directory:

Using Classic IO

 File dir = new File(".");
 String[] files = dir.list(new SuffixFileFilter(".java"));
 for (String file : files) {
     System.out.println(file);
 }
 

Using NIO

 final Path dir = Paths.get("");
 final AccumulatorPathVisitor visitor = AccumulatorPathVisitor.withLongCounters(new SuffixFileFilter(".java"));
 //
 // Walk one dir
 Files.walkFileTree(dir, Collections.emptySet(), 1, visitor);
 System.out.println(visitor.getPathCounters());
 System.out.println(visitor.getFileList());
 //
 visitor.getPathCounters().reset();
 //
 // Walk dir tree
 Files.walkFileTree(dir, visitor);
 System.out.println(visitor.getPathCounters());
 System.out.println(visitor.getDirList());
 System.out.println(visitor.getFileList());
 

Since:

1.0

See Also:

FileFilterUtils.suffixFileFilter(String), FileFilterUtils.suffixFileFilter(String, IOCase), Serialized Form

Field Summary

Fields inherited from interface org.apache.commons.io.filefilter.IOFileFilter

EMPTY_STRING_ARRAY

Constructor Summary

Constructors

Constructor and Description
SuffixFileFilter(List<String> suffixes) Constructs a new Suffix file filter for a list of suffixes.
SuffixFileFilter(List<String> suffixes, IOCase caseSensitivity) Constructs a new Suffix file filter for a list of suffixes specifying case-sensitivity.
SuffixFileFilter(String... suffixes) Constructs a new Suffix file filter for an array of suffixes.
SuffixFileFilter(String suffix) Constructs a new Suffix file filter for a single extension.
SuffixFileFilter(String[] suffixes, IOCase caseSensitivity) Constructs a new Suffix file filter for an array of suffixes specifying case-sensitivity.
SuffixFileFilter(String suffix, IOCase caseSensitivity) Constructs a new Suffix file filter for a single extension specifying case-sensitivity.

Method Summary

Modifier and Type	Method and Description
boolean	accept(File file) Checks to see if the file name ends with the suffix.
boolean	accept(File file, String name) Checks to see if the file name ends with the suffix.
FileVisitResult	accept(Path file, BasicFileAttributes attributes) Checks to see if the file name ends with the suffix.
String	toString() Provide a String representation of this file filter.

Methods inherited from class org.apache.commons.io.filefilter.AbstractFileFilter

handle, postVisitDirectory, preVisitDirectory, visitFile, visitFileFailed

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.commons.io.filefilter.IOFileFilter

and, negate, or

Constructor Detail

SuffixFileFilter

public SuffixFileFilter(List<String> suffixes)

Constructs a new Suffix file filter for a list of suffixes.

Parameters:

suffixes - the suffixes to allow, must not be null

Throws:

IllegalArgumentException - if the suffix list is null

ClassCastException - if the list does not contain Strings

SuffixFileFilter

public SuffixFileFilter(List<String> suffixes,
                        IOCase caseSensitivity)

Constructs a new Suffix file filter for a list of suffixes specifying case-sensitivity.

Parameters:

suffixes - the suffixes to allow, must not be null

caseSensitivity - how to handle case sensitivity, null means case-sensitive

Throws:

IllegalArgumentException - if the suffix list is null

ClassCastException - if the list does not contain Strings

Since:

1.4

SuffixFileFilter

public SuffixFileFilter(String suffix)

Constructs a new Suffix file filter for a single extension.

Parameters:

suffix - the suffix to allow, must not be null

Throws:

IllegalArgumentException - if the suffix is null

SuffixFileFilter

public SuffixFileFilter(String... suffixes)

Constructs a new Suffix file filter for an array of suffixes.

The array is not cloned, so could be changed after constructing the instance. This would be inadvisable however.

Parameters:

suffixes - the suffixes to allow, must not be null

Throws:

IllegalArgumentException - if the suffix array is null

SuffixFileFilter

public SuffixFileFilter(String suffix,
                        IOCase caseSensitivity)

Constructs a new Suffix file filter for a single extension specifying case-sensitivity.

Parameters:

suffix - the suffix to allow, must not be null

caseSensitivity - how to handle case sensitivity, null means case-sensitive

Throws:

IllegalArgumentException - if the suffix is null

Since:

1.4

SuffixFileFilter

public SuffixFileFilter(String[] suffixes,
                        IOCase caseSensitivity)

Constructs a new Suffix file filter for an array of suffixes specifying case-sensitivity.

Parameters:

suffixes - the suffixes to allow, must not be null

caseSensitivity - how to handle case sensitivity, null means case-sensitive

Throws:

IllegalArgumentException - if the suffix array is null

Since:

1.4

Method Detail

accept

public boolean accept(File file)

Checks to see if the file name ends with the suffix.

Specified by:

accept in interface FileFilter

Specified by:

accept in interface IOFileFilter

Overrides:

accept in class AbstractFileFilter

Parameters:

file - the File to check

Returns:

true if the file name ends with one of our suffixes

accept

public boolean accept(File file,
                      String name)

Checks to see if the file name ends with the suffix.

Specified by:

accept in interface FilenameFilter

Specified by:

accept in interface IOFileFilter

Overrides:

accept in class AbstractFileFilter

Parameters:

file - the File directory

name - the file name

Returns:

true if the file name ends with one of our suffixes

accept

public FileVisitResult accept(Path file,
                              BasicFileAttributes attributes)

Checks to see if the file name ends with the suffix.

Specified by:

accept in interface PathFilter

Specified by:

accept in interface IOFileFilter

Parameters:

file - the File to check

attributes - the file's basic attributes (TODO may be null).

Returns:

true if the file name ends with one of our suffixes

Since:

2.9.0

toString

public String toString()

Provide a String representation of this file filter.

Overrides:

toString in class AbstractFileFilter

Returns:

a String representation