Question

I need some help please. I have built my program but I am seeing some codes being thrown that I can't figure out how to solve. If I can get some help looking over the code and how to fix it, I'd greatly appreciate.

Bicycle.java:[48,4] method does not override or implement a method from a supertype

TestFootPrint.java:[23,30] incompatible types: Building cannot be converted to CarbonFootprint
TestFootPrint.java:[24,30] incompatible types: Car cannot be converted to CarbonFootprint
TestFootPrint.java:[25,30] incompatible types: Bicycle cannot be converted to CarbonFootprint
Building.java:[57,4] method does not override or implement a method from a supertype
Car.java:[65,4] method does not override or implement a method from a supertype
6 errors

Not sure why this isn't working. any help would be greatly appreciated - will post full code if need be.

Answer 1

TestFootPrint.java:[23,30] incompatible types: Building cannot be converted to CarbonFootprint
TestFootPrint.java:[24,30] incompatible types: Car cannot be converted to CarbonFootprint
TestFootPrint.java:[25,30] incompatible types: Bicycle cannot be converted to CarbonFootprint

The above three errors are coming because you are trying to autocast one class to another, like Building to CarbonFootprint. Since you have not provided the code, it is difficult to comment further why this error is coming specifically.

Building.java:[57,4] method does not override or implement a method from a supertype
Car.java:[65,4] method does not override or implement a method from a supertype

These errors are coming because Building and Car classes are probably extending some other class which has some abstract methods. And, these abstract methods are not implemented in the child classes Building and Car.