. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 12.7. Multi-line text input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . main advantages that this paradigm can offer us: • Web pages are objects: web pages are not just text files sent back to the client. They are object instances and we can harness OOP to design web pages we have a Windows instance which represents the physical windows containing GUI components (like text fields, radio buttons, drawing areas, etc…), in Wicket we have a WebPage instance which represents

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 12.7. Multi-line text input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . main advantages that this paradigm can offer us: • Web pages are objects: web pages are not just text files sent back to the client. They are object instances and we can harness OOP to design web pages we have a Windows instance which represents the physical windows containing GUI components (like text fields, radio buttons, drawing areas, etc…), in Wicket we have a WebPage instance which represents

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 12.7. Multi-line text input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . main advantages that this paradigm can offer us: • Web pages are objects: web pages are not just text files sent back to the client. They are object instances and we can harness OOP to design web pages we have a Windows instance which represents the physical windows containing GUI components (like text fields, radio buttons, drawing areas, etc…), in Wicket we have a WebPage instance which represents

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 12.7. Multi-line text input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . main advantages that this paradigm can offer us: • Web pages are objects: web pages are not just text files sent back to the client. They are object instances and we can harness OOP to design web pages we have a Windows instance which represents the physical windows containing GUI components (like text fields, radio buttons, drawing areas, etc…), in Wicket we have a WebPage instance which represents

Now we gonna look at a classic example of form to sign in a user with a username and password. ● Text felds elements are handled in Wicket with class TextField ● Example for a TextField: Java new TextField(“username”,Model.of(“Insert username”)); HTML Username: TextField component * The example code for the two versions of the form is we have a Windows instance which represents the physical windows containing GUI components (like text felds, radio buttons, drawing areas, etc...), in Wicket we have a WebPage instance which represents