Database is shut down abnormal

Please look at my code :

  	public Vector select(Object pojo,String condition , String conditionValue){
  		Vector v = new Vector();
  		GetConnection getConn = null ;
  		SQLFactory sf = new SQLFactory(pojo);
  		String sql = sf.createSql(
                                       SQLFactory.SELECT,condition,conditionValue);
  		try{
  			getConn = new GetConnection();
  			conn = getConn.getConnection() ;
  			stat = conn.createStatement();
  			rs = stat.executeQuery(sql);
  			while(rs.next()){
  				Vector tempV = new Vector();
  				tempV.add(rs.getInt(1));
  				tempV.add(rs.getString(2));
  				tempV.add(rs.getString(3));
  				tempV.add(rs.getString(4));
  				v.add(tempV);
  			}
  		}
  		catch(Exception err){
  			err.printStackTrace();
  		}
  		finally{
  			try {
  				System.out.println(rs);
  				if( null != rs 
  						&& !rs.isClosed() )
  					rs.close();
  					rs = null ;
  				if( null != stat && !stat.isClosed())
  					stat.close();
  					stat = null ;
  			} catch (SQLException e) {
  				e.printStackTrace();
  			}
  			getConn.close();
  			conn = null ;
  		}
  		return v ;
  	}

this code , given as follows:
oracle.jdbc.driver.OracleResultSetImpl @ 1dfc547
Exception in thread "main" java.lang.AbstractMethodError: oracle.jdbc.driver.OracleResultSetImpl.isClosed () Z
at dao.BasicDBOImpl.select (BasicDBOImpl.java: 124)
at util.CheckData.isExist (CheckData.java: 12)
at dao.BasicDBOImpl.add (BasicDBOImpl.java: 26)
at dao.BasicDBOImpl.main (BasicDBOImpl.java: 140)

From the error situation, output : oracle.jdbc.driver.OracleResultSetImpl @ 1dfc547,
Description rs is not null,
Meanwhile , at dao.BasicDBOImpl.select (BasicDBOImpl.java: 124),
explain the problem in the first 125 &&! rs.isClosed () here !

-------------------------

Question 1 , since rs no problem , how to be wrong ?

Question 2: how to change ?


rookie neighborhoods
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change in the other versions of the drivers try
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estimate is oracle.jdbc.driver.OracleResultSetImpl not given isClosed () implementation , resulting in an abstract call method error
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interested then you can go look at the source
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if not open source , or find the official documentation to see it, what the specific reason is not good Luancai
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I have also experienced similar problems, I was solved .

In the above defined in advance : ResultSet rs = null;
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compile without error ? As mentioned upstairs , rs did not define the try out ah.
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judge rs.isclosed Why do you want it ? Used directly after rs.close on the line. Concrete can see jar package source BasicDBOImpl interface
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seemingly no problem , ah, the jar replacement of
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I think this was supposed to Zhang unsinkable posted ... SOS ; ... help ...
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are the same, this is where the problem lies in line 27 and line 28 :

                  if( null != rs 
                          && !rs.isClosed() )

If ! rs.isCloed () to remove the program to normal. Very tangled !
[ the "&& " to "| |" is not acceptable ]
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abstract method to see how source code, do not know where to achieve !
I really white , and
Great God take a road, pointing ...
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Well !
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My ResultSet is a class variable , not a function of local variables !
My Connection \ Statement \ ResultSet is a class variable ,
follows:
conn = null; stat = null; rs = null;
Then, re- create the appropriate space inside the function , run out of the release !
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inside my program is a database connection is a class variable at this level ! Defined explicitly defined as null
Then, inside the function to create the appropriate connection !
Similarly, in a function created and released in a function !
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little relationship with the jar !
using jdbc oracle 10g which comes class12.jar!
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problem is found, the Oracle native driver problem ! ! !