ResultSet is getting closed on executing statement.execute(sql) - resultset

Question

On executing the follwing code i am getting error java.sql.SQLException: ResultSet is closed
public class SavePoints {
public void extract(ResultSet rs)
{
int c;
try {
while(rs.next())
{
c = rs.getInt("id");
String d=rs.getString("name");
String e=rs.getString("city");
String f=rs.getString("state");
String g=rs.getString("country");
//Displaying values
System.out.println("ID is:"+c+"\tName is:"+d+"\tCity is:"+e+"\tState is:"+f+"\tCountry is:"+g);
}
} catch (SQLException e1) {
e1.printStackTrace();
}
}
public static void main(String[] args) {
SavePoints spobj=new SavePoints();
try {
Connection con=DriverManager.getConnection("jdbc:odbc:Divya", "SYSTEM", "tiger");
Statement st=con.createStatement();
ResultSet rs=st.executeQuery("select * from publishers");
spobj.extract(rs);
//DatabaseMetaData databaseMetaData = con.getMetaData();
//System.out.println(databaseMetaData.getDriverMajorVersion());
//Savepoint sp=con.setSavepoint("Deleting Rows");
st.execute("delete from publishers where id=104");
//con.rollback(sp);
spobj.extract(rs);
} catch (SQLException e) {
e.printStackTrace();
}
}
}
What is the error? I cannot find it. Please let me know. I am a newbie.. so please explain in simple terms. I am grateful for your help. Thanks :)

Answer 1

you have called spobj.extract(rs); twice ,
first time when this function executes resultset moves to last because you are using rs.next()..
to achieve this you have use scrollable resultset
Statement st = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
and for next call of spobj.extract(rs); reverse the call of resultset by rs.previous()