请教,Bean里面get 过来的日期格式插入到oracle数据库中?有代码.

public boolean getInsert(NewCustomer customer) {
Connection conn = null;
PreparedStatement stmt = null;
boolean a = false;
int result = -1;
conn = OracleDAOFactory.getConnection();
try{

stmt = conn.prepareStatement(INSERT_CUSTOMER_CLIENT);
stmt.setString(1, customer.getCertificate());
stmt.setString(2, customer.getCertificateNumber());
stmt.setString(3, customer.getUname());
stmt.setString(4,customer.getBirthday());[color=red]//这里是获取的日期格式(生日),怎么用to_date来插入到Oracle 数据库存里面.[/color]
stmt.setString(5,customer.getSex());
stmt.setString(6,customer.getAddess());

        result = stmt.executeUpdate();
        if(result>0){
            a = true;
        }           
    }catch(SQLException e){
        e.printStackTrace();
        a = false;
    }finally {
        OracleDAOFactory.closeStatement(stmt);
        OracleDAOFactory.closeConnection(conn);
    }

    return a;
}

可以使用SimpleDateFormat类进行转换