This document discusses using JSP and servlets to connect to a database and perform SQL queries. It describes creating a dynamic web project with a servlet called DataServlet to handle database connections and queries. The servlet uses a controller class with methods like insert() to execute SQL statements like insert, update, delete and select queries and return results.

1. 
Username,Password,
,

2. • action servlet

3.  Servlet NewFile2.jsp

4. SQL)
SQL)
SQL
Select query
Update query
Insert query
Delete query

5. JSP Servlets and Database

6. Dynamic Web Project Servlet " DataServlet.java"

7. publicclass controller{
DBconnectdb = new DBconnect();
Statement stmt;
ResultSet rs = null;
public int insert(String sql) {
try{
db.createConnection();
stmt = db.getStatement();
stmt.executeUpdate(sql);
} catch (SQLException ex) {
Logger.getLogger(controller.class.getName()).log(Level.SEVERE,null,ex);
return 0;
}
db.closeConnection();
return 1;
}

9. UserDAO Mysql

10. display