public static boolean delID(String c_id) {

		String sql = "delete from member where id=?";
		boolean flag=false;
		
		Connection conn = null;
		PreparedStatement psmt = null;
		FileOutputStream fos = null;
		try {
			Class.forName("com.mysql.jdbc.Driver");
			conn = DriverManager.getConnection("jdbc:mysql://" + Server.DBIP + ":3306/po_tweeter", "POMA", "9353");
			psmt = conn.prepareStatement(sql);
			psmt.setString(1, c_id);
			int rs = psmt.executeUpdate();
			
			if(rs==1)
				return flag=true;
				
		} catch (SQLException e) {
			e.printStackTrace();
		}  catch (ClassNotFoundException e) {
			e.printStackTrace();
		} finally {
			if (conn != null) {
				try {
					conn.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}

			if (psmt != null) {
				try {
					psmt.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
			}

			if (fos != null) {
				try {
					fos.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		return flag;
	}