## org.apache.tools.tar
Class TarArchiveSparseEntry

    java.lang.Object
      org.apache.tools.tar.TarArchiveSparseEntry

All Implemented Interfaces:
  TarConstants

    public class TarArchiveSparseEntry

extends java.lang.Object
implements TarConstants

This class represents a sparse entry in a Tar archive.

The C structure for a sparse entry is:

     struct posix_header {
     struct sparse sp[21]; // TarConstants.SPARSELEN_GNU_SPARSE     - offset 0
     char isextended;      // TarConstants.ISEXTENDEDLEN_GNU_SPARSE - offset 504
     };

Whereas, "struct sparse" is:

     struct sparse {
     char offset[12];   // offset 0
     char numbytes[12]; // offset 12
     };

Field Summary

Fields inherited from interface org.apache.tools.tar.TarConstants

`ATIMELEN_GNU, CHKSUMLEN, CTIMELEN_GNU, DEVLEN, FORMAT_OLDGNU, FORMAT_POSIX, GIDLEN, GNAMELEN, GNU_LONGLINK, GNU_TMAGIC, ISEXTENDEDLEN_GNU, ISEXTENDEDLEN_GNU_SPARSE, LF_BLK, LF_CHR, LF_CONTIG, LF_DIR, LF_FIFO, LF_GNUTYPE_LONGLINK, LF_GNUTYPE_LONGNAME, LF_GNUTYPE_SPARSE, LF_LINK, LF_NORMAL, LF_OLDNORM, LF_PAX_EXTENDED_HEADER_LC, LF_PAX_EXTENDED_HEADER_UC, LF_PAX_GLOBAL_EXTENDED_HEADER, LF_SYMLINK, LONGNAMESLEN_GNU, MAGIC_OFFSET, MAGIC_POSIX, MAGICLEN, MAXID, MAXSIZE, MODELEN, MODTIMELEN, NAMELEN, OFFSETLEN_GNU, PAD2LEN_GNU, PREFIXLEN, PURE_MAGICLEN, REALSIZELEN_GNU, SIZELEN, SPARSELEN_GNU, SPARSELEN_GNU_SPARSE, TMAGIC, UIDLEN, UNAMELEN, VERSION_GNU_SPACE, VERSION_GNU_ZERO, VERSION_OFFSET, VERSION_POSIX, VERSIONLEN`

Constructor Summary
`TarArchiveSparseEntry(byte[] headerBuf)` Construct an entry from an archive's header bytes.

Method Summary
`boolean` `isExtended()`

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

Constructor Detail

### TarArchiveSparseEntry

    public TarArchiveSparseEntry(byte[] headerBuf)
                          throws java.io.IOException

  Construct an entry from an archive's header bytes. File is set to null.

  Parameters:
    `headerBuf` - The header bytes from a tar archive entry.
  Throws:
    `java.io.IOException` - on unknown format

Method Detail

### isExtended

    public boolean isExtended()