This week's book giveaway is in the Reactive Progamming forum. We're giving away four copies of Reactive Streams in Java: Concurrency with RxJava, Reactor, and Akka Streams and have Adam Davis on-line! See this thread for details.
After submitting the form i have to validate the email id. If already exists in database i have to display an error message saying that email id already exist. I have written the code but its not working. Can any one help me. I have attached my code
ResultSet rs=st.executeQuery("select emailid from registration where emailid='"+emailid+"'");