Return generic from method

Question

How I can return generic type from method? I wrote like this, but it dont work:

private static JsArray<T> convertListToJsArray(Collection<T> list)

I need to get Collection as parameter, and return parametrized JsArray.

possible duplicate - http://stackoverflow.com/questions/450807/java-generics-how-do-i-make-the-method-return-type-generic — scibuff, Mar 07 '12 at 10:39

score 3 · Accepted Answer · answered Mar 07 '12 at 10:41

3

You must specify the type parameter in front of the return type:

private static <T> JsArray<T> convertListToJsArray(Collection<T> list) {}

answered Mar 07 '12 at 10:41

michael667

score 3 · Answer 2 · answered Mar 07 '12 at 10:43

3

You need to declare the T type. This should work (notice the extra <T> before your return type):

private static <T> JsArray<T> convertListToJsArray(Collection<T> list)

answered Mar 07 '12 at 10:43

Guillaume Polet

sorry, it does not, we answered almost simultaneously. michael667 posted his answer a tiny bit quicker than me. – Guillaume Polet Mar 07 '12 at 10:47

2 Answers2