자바로 폴더내용 복사

폴더 속 내용까지 복사하려면 약간의 문제가 있는데 재귀 함수로 해결하였다.

public void copyDirectory(File sourceLocation, File targetLocation) throws IOException {
  
  if(sourceLocation.isDirectory()){
   
   if(!targetLocation.isDirectory()){
    targetLocation.mkdir();
   }//if
   String[] children  = sourceLocation.list();
   for(int i=0;i<children.length;i++){
    copyDirectory(new File(sourceLocation, children[i]),new File(targetLocation, children[i]));
   }//for
  }else{
   InputStream in  = new FileInputStream(sourceLocation);
   OutputStream out = new FileOutputStream(targetLocation);
   
   byte[] buf   = new byte[1024];
   int len    = 0;
   while((len = in.read(buf)) > 0){
    out.write(buf, 0, len);
   }//while
   in.close();
   out.close();
  }//else
 }//copyDirectory