public   class  Bank {

     protected  Vector<Filiale> filialen =  new  Vector<Filiale>();

     protected  Vector<Konto> konten =  new  Vector<Konto>();

     protected  StringBuffer protokoll =  new  StringBuffer();

     public  String getProtokoll() {
         return  protokoll.toString();
    }

     public   void  protokolliere(String string) {
        protokoll.append(string);
        protokoll.append('\n');
    }

     public   void  addKonto(Konto konto) {
        konten.add(konto);
    }

     public   void  addFiliale(Filiale filiale) {
        filialen.add(filiale);
    }

}

 import  java.io.*;
 import  java.util.Vector;
 import  org.apache.log4j.*;


 public   class  Bank {

     protected  Vector<Filiale> filialen =  new  Vector<Filiale>();

     protected  Vector<Konto> konten =  new  Vector<Konto>();

     protected  StringBuffer protokoll =  new  StringBuffer();
    
// Logging
    Logger logger = Logger.getLogger(Bank. class );
    ConsoleAppender consoleAppender;
    FileAppender fileAppender;
    
     public  Bank (String logFile, String logPattern)  throws  IOException {
		init(logFile, logPattern );
	}
    
     public  Bank (){
    	 try  { init("/tmp/BankLogFile.log", "  ");
    	    	}
    	 catch  (IOException e){
    		e.printStackTrace();
    	}
    }
        
    
     public   void  init (String logFile, String logPattern)  throws  IOException {
		
    	Layout layout =  new  PatternLayout(logPattern);
    	
    	consoleAppender =  new  ConsoleAppender(layout);
    	logger.addAppender(consoleAppender);
    	
    	fileAppender =  new  FileAppender (layout, logFile, false);
    	logger.addAppender(fileAppender);
    	
    	logger.setLevel (Level.INFO);
    	
	}
    
     public  String getProtokoll() {
    	String val= " ";
    	 try  {
    		FileInputStream file =  new  FileInputStream(fileAppender.getFile());
    		 int  l = file.available();
    		
    		 for  (  int  i= 1 ; i<=l; i++)
    			val+= ( char )file.read(); 
    	}
    	 catch  (IOException e) {
    		logger.error ("error" + fileAppender.getFile() + ":"+e);
    		 return  " ";
        	}
    	 return  val;
    }

     public   void  protokolliere(String string) {
        logger.info(string);
    }
    
     public   void  protokolliere(String string, Level level) {
        logger.info(level, string);
    }
    
     public   void  addKonto(Konto konto) {
        konten.add(konto);
    }

     public   void  addFiliale(Filiale filiale) {
        filialen.add(filiale);
    }

}