Package org.apache.commons.io.filefilter

Class 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:
    Serialized Form

    • Field Detail

      • 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

    • Method Detail

      • 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.