Package org.apache.commons.io.filefilter

Class CanReadFileFilter

java.lang.Object
org.apache.commons.io.filefilter.AbstractFileFilter
org.apache.commons.io.filefilter.CanReadFileFilter
All Implemented Interfaces:
FileFilter, FilenameFilter, Serializable, IOFileFilter
public class CanReadFileFilter extends AbstractFileFilter implements Serializable
This filter accepts Files that can be read.

Example, showing how to print out a list of the current directory's readable files: 

 File dir = new File(".");
 String[] files = dir.list( CanReadFileFilter.CAN_READ );
 for ( int i = 0; i < files.length; i++ ) {
     System.out.println(files[i]);
 }

Example, showing how to print out a list of the current directory's un-readable files: 

 File dir = new File(".");
 String[] files = dir.list( CanReadFileFilter.CANNOT_READ );
 for ( int i = 0; i < files.length; i++ ) {
     System.out.println(files[i]);
 }

Example, showing how to print out a list of the current directory's read-only files: 

 File dir = new File(".");
 String[] files = dir.list( CanReadFileFilter.READ_ONLY );
 for ( int i = 0; i < files.length; i++ ) {
     System.out.println(files[i]);
 }
Since:
1.3
See Also:

  • Field Details

    • serialVersionUID

      private static final long serialVersionUID
      See Also:

    • CAN_READ

      public static final IOFileFilter CAN_READ
      Singleton instance of readable filter

    • CANNOT_READ

      public static final IOFileFilter CANNOT_READ
      Singleton instance of not readable filter

    • READ_ONLY

      public static final IOFileFilter READ_ONLY
      Singleton instance of read-only filter

  • Constructor Details

    • CanReadFileFilter

      protected CanReadFileFilter()
      Restrictive constructor.

  • Method Details

    • accept

      public boolean accept(File file)
      Checks to see if the file can be read.
      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 can be read, otherwise false.