我如何把我select * from biao的植放到hashmap里,然后有怎么样把他一条一条的取出来呢??请大家帮帮忙,谢谢,谢谢,谢谢,谢谢谢谢,谢谢谢谢,

Question

http://www-900.ibm.com/developerWorks/cn/java/j-jtp08223/index.shtml

Answer 1

public class MyDB
{
  private int year;
  private String str;
  public MyDB(int ye,String s)
  {
      year=ye;
      str=s;
  }
}public Collection getDB()
{
   List cars=new ArrayList();
   Connection conn=null;
   Statement stat=null;
   ResultSet rs=null;
   
   try(
   conn=dataSource.getConnection();
   stat=conn.createStatement();
   rs=stat.executeQuery("sql语句");
     while(rs.next())
     {
        int year=rs.getInt("1");
        String str=rs.getString("2");
      cars.add(new MyDB(year,str));
     }
     return cars;
   }catch(Exception e0
   {
      e.printStackTrace();
   }
}

Answer 2

不太清楚楼主的意思
放到hashmap的话，要求键－值对能唯一确定
如果你不同记录对应的一个图的话，你怎么往hashmap里放？

Answer 3

http://www.zdnet.com.cn/developer/code/story/0,2000081534,39111995,00.htm
http://www2.tw.ibm.com/developerWorks/tutorial/SelectTutorial.do?tutorialId=182
帮你找了两篇文章，希望对你有用/

Answer 4

HashMap hash=new HashMap();
hash.put("asdf","asdfsdf");
hash.put("asdf","asdfsdf");
System.out.println(hash.size());//size=1;jdk不报错
HashMap hash=new HashMap();
hash.put("asdf1","图1");
hash.put("asdf2","图1");