a$.$ Write a Java class that declares variables to represent the length and width of a room in feet.

Assign appropriate values to the variables$$for example, length $=15$ and width $=25.$ Compute and

display the floor space of the room in square feet $($area $=$length $*$ width$).$ Display explanatory text with

the value for example, the floor space is $375$ square feet.

b$.$ Convert the Room class to an interactive application. Instead of assigning values to the length and

width variables, accept them from the user as input. As output, echo the user$$s entries as well as

displaying the floor space