in java please

Design and implement a program that computes its own operations (+,-, *). Have three methods of each to compute two numbers, three numbers, and n numbers. You should have three classes plus the driver. Example output for addition: Adding two numbers Please enter two number to add 7 + 8 = 15 Adding three numbers Please enter three number to add 6 + 8 + 5 = 19 Adding n numbers How many number do you want to add? 4 Please enter 4 numbers separated by enters 8 + 9 + 7 + 6 = 30