title: Error in my mp3 splitter program?
body: <p>So, I made a program that splits a .mp3 file in Java. Basically, it works fine on some files but on some, the first split file encounters an error after playing some part. The other files work completely fine though.</p>
  
  <p>I think it has something to do with how a file cannot be a multiple of the size of my array and there should be some mod value left. Can anybody please identify the error in this code and correct it?</p>
  
  <p>(here, splitval = no. of splits to be made, filename1= the selected file)</p>
  
  <pre><code> int splitsize=filesize/splitval;
   String filecalled;
   try
   {
          byte []b=new byte[splitsize];
          FileInputStream fis = new FileInputStream(filename1);
          name1=filename2.replaceAll(".mp3", "");
          for(int j=1;j&lt;=splitval;j++)
          {
              filecalled=name1+"_split_"+j+".mp3";
              FileOutputStream fos = new FileOutputStream(filecalled);
              int i=fis.read(b);
              fos.write(b, 0, i);
              //System.out.println("no catch");
           }
          JOptionPane.showMessageDialog(this, "split process successful");
       }
     catch(IOException e)
         {
             System.out.println(e.getMessage());
  
         }
  </code></pre>
  
  <p>Thanks in advance!</p>
  
  <p>EDIT:
  I edited the code as suggested, ran it. Here:</p>
  
  <pre><code>C:\Users\dell5050\Desktop\Julien.mp3      5383930 bytes  
  C:\Users\dell5050\Desktop\ Julien_split_1.mp3    1345984 bytes  
  C:\Users\dell5050\Desktop\ Julien_split_2.mp3    1345984 bytes  
  C:\Users\dell5050\Desktop\ Julien_split_3.mp3    1345984 bytes  
  C:\Users\dell5050\Desktop\ Julien_split_4.mp3    1345978 bytes  
  </code></pre>
  
  <p>There is change in the last few bytes which means that the filesize%splitval is solved.. but still the first file in this.. containing '_split_1' has error while playing some of the last part.</p>
  
  <p>The second file containing '_split_2' starts exactly where the first ended. So the split process is correct. Then, what exactly is the extra empty in the end of the first file? </p>
  
  <p>Also, I noticed that the artwork and info of the original file carries over into the first file ONLY. No other files. Does it have something to do with that?  Same thing doesnt happen in some other mp3 files.</p>
  
  <p>CODE:</p>
  
  <pre><code>FileInputStream fis;
      FileOutputStream fos;
      int splitsize = (int)(filesize / splitval) + (int)(filesize % splitval);
      byte[] b = new byte[splitsize];
      System.out.println(filename1 + "            " + filesize + " bytes");
      try 
      {
          fis = new FileInputStream(file);
          name1 = filename2.replaceAll(".mp3", "");
          for (int j = 1; j &lt;= splitval; j++) 
          {
              String filecalled = name1 + "_split_" + j + ".mp3";
              fos = new FileOutputStream(filecalled);
              int i = fis.read(b);
              fos.write(b, 0, i);
              fos.close();
              System.out.println(filecalled + "    " + i + " bytes");
  
          }
      }
      catch(IOException ie)
      {
          System.out.println(ie.getMessage());
      }                        
  </code></pre>