public void insert(BookCategory bc){
		String insert = "insert into bookcategory(name) values(?);";
		DBManager dbm = null;
		Connection conn = null;
		PreparedStatement pstmt = null;
		System.out.println("wwwwwww");
		try{
			dbm = new DBManager();
			conn = dbm.getConnection();
			
			pstmt = conn.prepareStatement(insert);
			//System.out.println(bc.getName());
			pstmt.setString(1, bc.getName());
			
			pstmt.executeUpdate();
			
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			dbm.closeAll(null, pstmt, conn);
		}
	}