Computer Programming

The “implements” keyword is used by a concrete class to indicate that it implements the interface and that each method in the interface is declared with the signature specified in the interface declaration.
Note that we use an interface class instead of an abstract class since there is no default implementation to inherit as would be in abstract classes. It is also noteworthy that an interface class must be declared in a file with the same name and a .java file-name extension.
Should the user fail to select anything in the special features panel that is reinforced or sealable top, the default is, it is assumed that the container is not reinforced or can’t have a sealable top as appropriate.
The user will only enter the exact dimensions of the desired container and that these dimensions will be within the range that the company can make. That is there is no way of checking whether the ordered dimensions can actually be