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POjava - Accssesing "nested" Generic type
 

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    <p>I've two classes that use generic types (A, B). My question is - What is the best way to work with the first generic type (TA) from inside B ? Here is simplified example:</p> <pre><code>public class A&lt;TListItemsType&gt; { List&lt;TListItemsType&gt; list = new LinkedList&lt;TListItemsType&gt;(); public List&lt;TListItemsType&gt; getList() { return list; } } public class B&lt;TContainderType extends A&gt; { TContainderType temp = null; public B(TContainderType cont) { temp=cont; } public void DoWork() { for (TListItemsType item : temp.getList()) { System.out.println(item); } } } </code></pre> <p>I've tried the solution suggested <a href="https://stackoverflow.com/questions/13229979/java-nested-generic-type-mismatch">here</a> -</p> <pre><code>public class B&lt;TContainderType extends A&lt;TListItemsType&gt;&gt; { TContainderType temp = null; public B(TContainderType cont) { temp=cont; } public void DoWork() { for (TListItemsType item : temp.getList()) { System.out.println(item); } } } </code></pre> <p>And it works as long as use pre defined type such as Integer or String, sadly, this doesn't work as the compiler doesn't recognize the generic as class name.</p> <p>So went further on and tried to configure another generic type and then use it inside the extends:</p> <pre><code>public class B&lt;TListItemsType, TContainderType extends A&lt;TListItemsType&gt;&gt; { TContainderType temp = null; public B(TContainderType cont) { temp=cont; } public void DoWork() { for (TListItemsType item : temp.getList()) { System.out.println(item); } } } </code></pre> <p>And it actually works, but it doesn't smell right. Is there another way to use generic type used n another generic type?</p>
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    1. COSorry but it is extremely annoying that your actual class names are single character names and your type parameters long. It should be the other way around and it makes the code incredibly hard to read.
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    2. COWell @biziclop, I think is pretty clear that in this case important part is the generic type rather than the class name, and that this is very simplified example, giving single character names to the generics would make the code completely unreadable. I can assure you that in RL the classes have full names :)
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    3. COThe opposite is true: this is making the code unreadable. Single character names for generics are fine, it's what everyone is used to.
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