1. A RuntimeException indicates a programming error. When you throw a RuntimeException, you should provide an indication of the most likely cause of the error. 2. The argument remains unchanged. 3....

1. A RuntimeException indicates a programming error. When you throw a RuntimeException, you should provide an indication of the most likely cause of the error.

2. The argument remains unchanged.

3. The object that the argument refers to has been rotated 90°.