Answers for "No suitable driver found for jdbc:sqlite"

no suitable driver found for jdbc:mysql

Connection con = null;
try {
    //registering the jdbc driver here, your string to use 
    //here depends on what driver you are using.
    Class.forName("something.jdbc.driver.YourFubarDriver");   
    con = DriverManager.getConnection("jdbc:apache:commons:dbcp:test");
} catch (SQLException e) {
    throw new RuntimeException(e);
}

no suitable driver found for jdbc:mysql:

Try putting the driver jar in the server lib folder. ($CATALINA_HOME/lib)

I believe that the connection pool needs to be set up even before the application is instantiated. (At least that's how it works in Jboss)

no suitable driver found for sqlite

DriverManager.getConnection("jdbc:sqlite:D:\db\my-db.sqlite").