In Java code please

Your program should perform the followings: 1. Your program should prompt the user to enter the dimensions of the matrices (10 pts) 2. Checks the validity of the multiplication (10 Pts) 3. Use the random object to generate the data (20 Pts) 4. Multiply the matrices (20 Pts) 5. Format outputs nicely One copy to the screen (20 Pts) Another copy to an external file created by your program (20 Pts) a. b