how to copy file in java from source to destination directory(filecopier)

This example is demonstrate how to copy file in java from source to destination directory.

 import java.io.File;  
 import java.io.FileInputStream;  
 import java.io.FileOutputStream;  
 import java.io.IOException;  
 import java.io.OutputStream;  
 public class FileCopier {  
      public static void main(String args[]) throws Exception {  
           File inboxDirectory = new File("D:/uttam/app/eclipse/Test class/src/data/inbox");  
           File outboxDirectory = new File("D:/uttam/app/eclipse/Test class/src/data/outbox");  
           outboxDirectory.mkdir();  
           File[] files = inboxDirectory.listFiles();  
           System.out.println(files);  
           try{for (File source : files) {  
                if (source.isFile()) {  
                     File dest = new File(outboxDirectory.getPath() + File.separator  
                               + source.getName());  
                     copyFile(source, dest);  
                }  
           }}  
           catch(Exception e){}  
      }  
      private static void copyFile(File source, File dest) throws IOException {  
           OutputStream out = new FileOutputStream(dest);  
           byte[] buffer = new byte[(int) source.length()];  
           FileInputStream in = new FileInputStream(source);  
           in.read(buffer);  
           try {  
                out.write(buffer);  
           } finally {  
                out.close();  
                in.close();  
           }  
      }  
 }