java8 stream test

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import java.util.*; import java.util.stream.*; class Main { public static void main(String[] args) { List<Integer> list = Arrays.asList(-1,0,1,2,3); System.out.println(list); System.out.println(list.stream().filter(i->i>0).collect(Collectors.toList())); System.out.println(list.stream().filter(i->i>0).collect(Collectors.toList()).add(1)); System.out.println(list); List<Integer> a = list.stream().filter(i->i>0).collect(Collectors.toList()); a.add(1); System.out.println(a); System.out.println(list); } }
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