regex 169 Questions Some tutorials are made before 1.8, and you said your new to Java so you couldn't come up with this on your own. I believe the fix is right - what is making this example fail to compile is the usual issue: JDK-8039214. Currently named capture groups are a bit of a pain in TypeScript: All names are of type string even if the regexp doesn't have that named group. boolean: Returns / Sets the element's disabled attribute, indicating that the control is . Why did the Soviets not shoot down US spy satellites during the Cold War? It means "Some specific type I don't know", and since you don't know the type, you can't add anything to the list. Now the comment is gone and you answered instead. At what point of what we watch as the MCU movies the branching started? I have a couple of classes having identical methods, except with respect to certain parameter types: Now Im trying to have a main class that stores a mixed list of these class objects and for each of these instances, passes info between its two methods: The List> and Map statements are OK. You can invoke the append method as follows: List<String> ls = new ArrayList<> (); append (ls, String.class); Cannot Declare Static Fields Whose Types are Type Parameters A class's static field is a class-level variable shared by all non-static objects of the class. Hence, static fields of type parameters are not allowed. And heres where inference breaks down. <? extends Object>Question Java Java, JDK5 , JDK5 , a_string Integer List iList Integer Integer , Object Java List List