List is a raw type. References to generic type List should be parameterized

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I believe that

List is a raw type. References to generic type List should be parameterized

is not an error, but a warning.

Understanding generics is a cornerstone if you are planning to use Java so I suggest that you should check out Java’s tutorial pages about this:

java generics tutorials

So if you know what type of objects are contained in publiesdList, than you can do this:

List<YourType> synchronizedpubliesdList = Collections.synchronizedList(publiesdList);

If there are multiple types of objects in your list than you can use a wildcard:

List<?> synchronizedpubliesdList = Collections.synchronizedList(publiesdList);

Or if you just want to get rid of the warning than you can suppress it like this:

@SuppressWarnings("rawtypes")
List synchronizedpubliesdList = Collections.synchronizedList(publiesdList);

the latter is not recommended however.

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