O'Reilly logo

Vaadin 7 Cookbook by Ondrej Kvasnovsky, Jaroslav Holan

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Magic tricks

In this recipe, we will describe how to create a magic card trick as a web application. It is called the Princess Card trick. American magician Henry Hardin created it in 1905. The Princess Card trick is a well-known mentalist effect.

The effect: A small deck of cards (about five) is shown to a spectator. The spectator remembers one card. Then, the cards are shuffled and again shown. One card disappears! And it's the spectator's thought card.

The trick's explanation: The main essence of the trick is that we replace the original deck of card with a deck of similar cards during the shuffling of cards. Because the user will think of his/her card, he/she will not exactly remember the other cards. However, visually the user will have ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required