Vault

James Bond is trying to crack a vault. Before we start to write code, we will draw a UML diagram on the whiteboard (teacher will help) and figure out what the method signatures will be.

1. We need a Vault object that contains a secret code.
It also contains a tryCode() method that takes a number as a parameter and returns true if that number opens the vault, false otherwise.

2. Test the vault object using a main method.

3. Make a James Bond class that has a method findCode() that takes a Vault as a parameter.
The codes are between 0 and 1 million. This method tries all the codes, and returns the first code that opens the vault, or -1 if no code opened the vault.

4. Test your code by instantiating the JamesBond and Vault classes.

5. Add a constructor for Vault so that you can easily set the secret code. If you would like to set the secretCode to a random value, you can use the code below that we saw in level 0:

new Random().nextInt(1_000_001);