How to save the string from JTextFied to database?

Question

can i know how to save the data from JTextFied to databse. Is it using update?

Answer 1

The most straightforward way would be something like:
String myKey=myKeyField.getText();
String foo=fooField.getText();
String sql="update mytable set foo='"+foo+"' where mykey='"+myKey+"'";
connection.createStatement().executeUpdate(sql);
This example assumes that the input fields cannot possibly contain quotes or the string won't be built correctly. Which by the way brings up a question I'd be interested in hearing others answer: What do you do about this? Sometimes I use PreparedStatement which handles that problem, other times I write my own little function to escape the string properly.
You can also read the record into a ResultSet and use ResultSet.update(). I'm mostly using mySql and I found that in mySql ResultSet.update just creates a SQL update statement like I did above and executes it, so the only real advantage would be if you find the syntax more convenient. Perhaps other database drivers do something different that would give other pros and cons.