Implement the following classes, each on a separate file: MyDevice > > -networks: String[] Camera -price: Double +takePicture(): void /*Constructor, getter-setter*/ +takeVideo(): void + portable (): void 1 1 SmartPhone -phone Number: int /*Constructor, getter-setter*/ | +toString(): String Laptop -eMail: String /*Constructor, getter-setter*/ +toString(): String Now write a test program and create two SmartPhone and Laptop objects using user input. Throw an exception that you define if the price input is negative. For SmartPhone class, the portable() method should display On hand. For Laptop class the portable() method should display "On lap. Then invoke their toString(), takePicure() and take Video() methods. For SmartPhone the takePicure() method should display Picture snap. For Laptop the takePicure() method should display Picture is taken. For SmartPhone the take Video() method should display "Video good. For Laptop the take Video() method should display "Video is best. The toStringo method should display the values for all the data fields. Write the objects to a file and read from the file again to display the toString() for the device with the highest price