p:autocomplete tag using database - primefaces

Question

I want to use autocomplete in inputTextArea. I am doing it using values from the database. I have words, digits, symbols(like #) stored in the database.
The problem is when I try typing in the textArea, the whole list of things appears. Instead, I just want only those options to come which matches the input written in the textArea, kind of autocomplete feature but it fetches values from a database.
Given below is the java code that I have written so far.
public class DbConnect {
public List<String> completeArea(String query1) {
ResultSet rs;
Statement st;
Connection con;
PreparedStatement pst;
List<String> result = new ArrayList<String>();
try {
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost/company", "root", "");
try {
query1 = "select name from labels";
pst = con.prepareStatement(query1);
rs = pst.executeQuery();
while (rs.next()) {
result.add(rs.getString("name"));
}
} catch (Exception ex) {
System.out.println(ex);
}
} catch (Exception ex) {
System.out.println("error occured" + ex);
}
System.out.println("size is " + result.size());
return result;
}
I do not want to specify any particular letter for searching in the database, it should pick automatically when the user types in. Any help would do good. Thanks a lot.

Answer 1

In your example the query1 parameter of the completeArea method is the user input but you overwriting it with your query. Try with
public List<String> completeArea(String input) {
...
String query = "select name from labels where name like ?";
pst = con.prepareStatement(query);
pst.setString(1, input + "%");
...
}
Edited according to #Slaw comment. Thanks for the correction. :)
I would use <p:autoComplete /> instead of inputTextArea for this usecase.
You can find a good tutorial in the official PrimeFaces site.

Answer 2

Your query is
select name from labels
that will give all labels's name...
I do not want to specify any particular letter for searching in the database, it should pick automatically when the user types in. Any help would do good.
If you want some matching you must specify a condition