java.io.Serializable
, java.util.Comparator<java.io.File>
public class DirectoryFileComparator extends AbstractFileComparator implements java.io.Serializable
File.isDirectory()
method.
This comparator can be used to sort lists or arrays by directories and files.
Example of sorting a list of files/directories using the
DIRECTORY_COMPARATOR
singleton instance:
List<File> list = ... DirectoryFileComparator.DIRECTORY_COMPARATOR.sort(list);
Example of doing a reverse sort of an array of files/directories using the
DIRECTORY_REVERSE
singleton instance:
File[] array = ... DirectoryFileComparator.DIRECTORY_REVERSE.sort(array);
Modifier and Type | Field | Description |
---|---|---|
static java.util.Comparator<java.io.File> |
DIRECTORY_COMPARATOR |
Singleton default comparator instance
|
static java.util.Comparator<java.io.File> |
DIRECTORY_REVERSE |
Singleton reverse default comparator instance
|
Constructor | Description |
---|---|
DirectoryFileComparator() |
Modifier and Type | Method | Description |
---|---|---|
int |
compare(java.io.File file1,
java.io.File file2) |
Compare the two files using the
File.isDirectory() method. |
private int |
getType(java.io.File file) |
Convert type to numeric value.
|
sort, sort, toString
public static final java.util.Comparator<java.io.File> DIRECTORY_COMPARATOR
public static final java.util.Comparator<java.io.File> DIRECTORY_REVERSE
public int compare(java.io.File file1, java.io.File file2)
File.isDirectory()
method.compare
in interface java.util.Comparator<java.io.File>
file1
- The first file to comparefile2
- The second file to compareFile.compareTo(File)
with file2 as the parameter.private int getType(java.io.File file)
file
- The fileCopyright (c) 2002-2017 Apache Software Foundation