SimpleObject interface

I ended up implementing an actual Singleton then failed, realized once again it has to be exactly what they say, nothing more no matter what, and I forgot :0

This task is basically a repeat of 1307 and I think either this task's solution is wrong or 1307's. I couldn't pass this task because, initially, I didn't include <String> after SimpleObject; but it passed after I put it in. public static class StringObject implements SimpleObject<String> Well, in 1307, I didn't include <String>, but passed it. I think CG had an incorrect solution in 1307, if <String> is supposed to follow the method name.

I hope there will be Generics learning section, where I can gather all the pieces of puzzles. Right now I completed task intuitively.

So far I've been okay with the new concepts about interfaces and abstracts classes. But for some tasks, I was able to actually do the right this without fully understanding why I was doing it. And this task is a really good example of that. In this case I was really lost and was able to make it pass by reading the help section for this task. I really don't want to just continue doing it this way because I'm basically not fully getting the concepts. Actually, just yesterday I went through the whole section again from start, to reinforce the concepts and try to drill them in my head, but apparently it didn't work, as I really don't understand this task. Can someone point me in the right direction on what are the concepts that I need to understand that this tasks touches? Would really appreciate it! TIA

Is this problem related to generics ?

please help, what is wrong public class Solution { public static void main(String[] args) throws Exception { SimpleObject<String> stringObject = new StringObject<String>(); } interface SimpleObject<T> { SimpleObject<T> getInstance(); } public static class StringObject<String> implements SimpleObject<String> { public StringObject<String> getInstance(){ return this; } } }