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package test;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class FileByte {
private String filePath = "D:\\test.mdb";
private void getFileByte(){
         File f = new File(filePath)   ;  
         try{  
           FileInputStream fis = new FileInputStream(f) ;  
           try   {   
           System.out.println(fis.available())   ;  
           }catch(IOException e1){  
           e1.printStackTrace();  
           }  
           }catch(FileNotFoundException e2){  
           e2.printStackTrace();  
           }  
     }
public static void main(String[] args)
{
   FileByte fb = new FileByte();
   fb.getFileByte();
}
}