자바 파일 입출력 1

 

출처 : http://joongang.springnote.com/pages/4642959.xhtml

 

1. import java.io.BufferedInputStream;
   import java.io.BufferedOutputStream;
   import java.io.FileInputStream;
   import java.io.FileNotFoundException;
   import java.io.FileOutputStream;
   import java.io.IOException;
2. public class CopyImageEx1 {
3.  public static void main(String[] args)
    {
     BufferedInputStream bis = null;
     BufferedOutputStream bos = null;
     try
     {
      // FileInputStream -> 하나씩 읽어올때 쓰구
      // BufferedInputStream -> 한번에 읽을때 써
      // 그러니까 두개를 함께 쓰면 성능에 좋겠지 ㅎㅎ
      bis = new BufferedInputStream(new FileInputStream("C:\\Documents and Settings\\All Users\\Documents\\My Pictures\\그림 샘플\\푸른 언덕.jpg"));
      bos = new BufferedOutputStream(new FileOutputStream("c:\\test.jpg"));
      
      int data = 0;
      while( (data = bis.read() ) != -1)
      {
       bos.write(data);
      }
     }
     catch (FileNotFoundException e)
     {
      e.printStackTrace();
     }
     catch (IOException e)
     {
      e.printStackTrace();
     }
     finally
     { // 마지막에 연것을 먼저 닫고.. 
      if(bos != null) try{ bos.close(); } catch(IOException e) {}
      if(bis != null) try{ bis.close(); } catch(IOException e) {}
     }
    }
   }