no, it is not inheritance. there are two things you can check:
1. multiple inheritance is not supported by Java, and you can implement multiple interfaces for each class
2. there is nothing in an interface you can actually inherit
stultuske was right until last month.
The latest version of Java (Java 8) allows static methods and "default" instance methods to be defined in interfaces, which are inherited by any class that implements the interface.
should 've mentioned that, indeed. but most exams and companies still use Java 7 (or below), so if they ask you that, do mention that it's only since Java 8 that you can inherit (you don't automatically do) from interfaces.
Yes, that's a widely-help view. I agree, especially because it has the "diamond" inheritance problem.
I think the designers also has doubts, but they were needed to retro-fit all the wonderful new stream support with lambdas into the existing API without breaking existing programs.
yes, which just shows how much of a kludge those are...
The fact that they had to break the core premises (no multiple inheritance at implementation level) in order to get it in should have raised a lot of red flags about wanting to put it in in the first place.
Hi. I have a form with list box : lst_product, datagridview : grd_order and button: btn_addline. lst_product has a list of product ids selected from database (MS Acess 2013) , grd_order is by default empty except for 2 headers and btn_addline adds rows to grd_order.
Hi, as I was told that my code doesn’t scale well at all, I thought perhaps I’d try to get a better understanding of interfaces/abstract classes and classes and the relationship between them.
I don’t want at this stage work on a big separate project as I've already got plenty ...
I am writing a java program that needs to execute shell commands, so I wrote a function that would take the command to execute as a string (ie: "mkdir ~/Folder1") and execute that command with the shell. Here is the function:
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