Something

import java.io.*;

public class AccessFile {
   


   public static void testmethode (String filename, String buf) {
      System.out.println ("DEBUG: "+filename+ " DEBUG2: "+buf);
   }
   
   public static void writeFileBinary (String filename) throws IOException {
     try
     {
      FileOutputStream aus = new FileOutputStream(filename);
      DataOutputStream out = new DataOutputStream(aus);
      
      out.close();
     }
     catch ( Exception e ) { System.out.println(e); }
    }
    
         
    public static void readFileBinary (String filename) throws IOException {
       double[] temp_zahlen = new double[12];
       
        try {
            FileInputStream ein = new FileInputStream(filename);
            DataInputStream in  = new DataInputStream(ein);
           
            in.close();  
       }
       
       catch ( Exception e ) { System.out.println(e); }
    }
    
    
    public static void writeFile (String filename, String buffer)  {
     try { 
          FileWriter ausgabestrom = new FileWriter (filename);
          PrintWriter ausgabe = new PrintWriter (ausgabestrom);
          
          ausgabe.println(buffer);
          ausgabe.close();
          System.out.println ("\n\n Es wurde in die Datei " +filename+ " gespeichert.");
     }
     
     catch ( Exception e ) { System.out.println(e); }
     
    }
    
    public static String readFile (String filename) {
        //System.out.println ("Lese aus Datei" +filename);
     try {    
          FileReader eingabestrom = new FileReader (filename);
          int gelesen;
          StringBuffer text = new StringBuffer();
          boolean ende =false;
          while (!ende) {
              gelesen = eingabestrom.read();
              if (gelesen == -1)  ende = true;
              else {
                    text.append((char)gelesen);
              }
          }
      eingabestrom.close();
      return text.toString();
     }     
    
      catch ( Exception e ) { System.out.println(e); return "Can't acccess File"; }
        
    }  
    
 }