java连接Access时的提交问题？？

我写了程序,先往Access中插入一条数据,然后在查询数据。但插入成功了，就是查询不出来，我知道是插入后没有提交，请问Access操作后怎么提交？？以下是我的代码：请问该怎么加哈？？？
    package test;

public class Dao {
   
    public int  insert(Bean user){
        int flag = 0 ;
        ContinueAccess access = new ContinueAccess();
        String sql = "insert into t_user values ('"+user.getId()+"','"+user.getName()+"')" ;
        System.out.println(sql);
        try {
            flag = access.update(sql);
        } catch (Exception e) {
            // TODO: handle exception
        }    finally{
            
            access.close();
        }
        return flag ;
    }
    public int find(){
        int flag = 0 ;
        ContinueAccess access = new ContinueAccess();
        String sql = "select * from t_user " ;
        System.out.println(sql);
        
        try {
            flag = access.update(sql);
        } catch (Exception e) {
            // TODO: handle exception
        }    finally{
            access.close();
        }
        return flag ;
    }
    public static void main(String[] args) {
        
        Bean user = new Bean();
        user.setId("004");
        user.setName("黄盛");
        Dao dao = new Dao();
        dao.insert(user);
        dao.find();
    }

}
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