Class BackupUtil


  • public class BackupUtil
    extends java.lang.Object
    • Constructor Summary

      Constructors 
      Constructor Description
      BackupUtil()
      Creates a new instance of BackupUtil
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void backupAllSubdirs​(java.io.File dir, int maxBackups)
      Backups all found "layers" of subdirs.
      static void backupContents​(java.io.File dir, int maxBackups)
      backups all files in the directory.
      static void backupDir​(java.io.File file, int maxBackups)
      This method created to backup dirs.
      static int backupFile​(java.io.File file, int maxBackups)
      Performs backup of file.
      static boolean checkForInteger​(java.lang.String s)  
      static boolean deleteDir​(java.io.File dir)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • BackupUtil

        public BackupUtil()
        Creates a new instance of BackupUtil
    • Method Detail

      • backupFile

        public static int backupFile​(java.io.File file,
                                     int maxBackups)
        Performs backup of file. Searchs for all files with the same name + "~i~"(such names we use for backupped files). For each backup it increase it's number for 1 (older backups has higher numbers). Then checks, if there more backups, then maxBackups allows, and remove superfluous old backups.
        Parameters:
        file - File to backup
        maxBackups - Maximum number of allowed backups
        Returns:
        number of backup levels after finishing operation.
      • backupDir

        public static void backupDir​(java.io.File file,
                                     int maxBackups)
        This method created to backup dirs. It just renames directories, not content of this directories. Renaming mechanism is the same, as for backupFile(). If dir is empty, returns. If parametr is not dir, returns.
      • backupAllSubdirs

        public static void backupAllSubdirs​(java.io.File dir,
                                            int maxBackups)
        Backups all found "layers" of subdirs. Subdirs have the same layer, if suffixes of their names are the same (suffix has format ~ + int number + ~)
        Parameters:
        dir - root dir where layers situated
        maxBackups - max allowed time to backup
      • backupContents

        public static void backupContents​(java.io.File dir,
                                          int maxBackups)
        backups all files in the directory. No rename of directory. Not - recursive
      • checkForInteger

        public static boolean checkForInteger​(java.lang.String s)
        Parameters:
        s - Checks, if this String represents integer number
        Returns:
        true, if if this String represents integer number, false otherwise
      • deleteDir

        public static boolean deleteDir​(java.io.File dir)
        Parameters:
        dir - File to delete. If it is not dir, deletes this File. Otherwise deletes dir recursively
        Returns:
        true, if dir (or file) removed successfully