Java Threading Example: Bank Transaction with MyRun Class

This code creates a new instance of the `Bank` class with an account number of 123456, username "user", and a balance of 2000000000.999. It then creates an instance of the `MyRun` class with the `bank` object, username "user", and an amount of 100000000. \n\nNext, it creates a new `Thread` object with the `myRun` object as a parameter. Finally, it starts the thread by calling the `start()` method, which will execute the code in the `run()` method of the `myRun` object concurrently.