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JDBC and Relational Databases
Joined: Aug 19, 2007
Aug 27, 2007 02:22:00
First of all thanking you to all of members to sending response to
my previous doubts.
I have some problem with the following code.
Though it is compiling and running, it gives false results.
First of all CODE is:
public class sample
rs=st.executeQuery("select * from uin where NUM='"+ UIN +"'");
System.out.println("Record is already exist");
ps=con.prepareStatement("insert into uin values(?)");
System.out.println("Number inserted Successfully:");
public static void main(String args)
sample s=new sample();
The above code is working.It always displays "Record is already exist".
If i doesn't have any records in my database it always dispalys the above code.
But i doesn't know wheter it is coding problem or driver problem.
programs are working properly in my system.
please clarify my doubt.
Joined: Nov 29, 2005
Aug 27, 2007 03:56:00
resultset would never be null , even if it doesn't have any record in it.
For more information related to this check javadoc.
It is sorta covered in the
JavaRanch Style Guide
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