java return new instance of generic type

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Nell
21 Jul 2020
1public static <E> void append(List<E> list, Class<E> cls) throws Exception {
2    E elem = cls.newInstance();   // OK
3    list.add(elem);
4}
5//You can invoke the append method as follows:
6List<String> ls = new ArrayList<>();
7append(ls, String.class);
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