Records of long objects and long judgments in the stream of list

stay stream.filter Chinese comparison Long!=long The results of the process are not really filtered out , The specific phenomena are as follows ：

long[] a = new long[]{7864, 284, 347, 7732, 8498};
        Long bid = 123123l;
        List<Long> il = new ArrayList<>();
        il.add(1l);
        il.add(2l);
        il.add(3l);
        il.add(123123l);
        System.out.println(il.size());
        List<Long> r=il.stream().filter(t -> t != bid).collect(Collectors.toList());
        System.out.println(r.size());

result

From the result, we can see the code il.stream().filter(t -> t != bid).collect(Collectors.toList()); Medium filtration bid The value of is not in effect

Problem analysis ：bid Defined as objects , Object and concrete value cannot be compared normally

terms of settlement ： take bid Change it to big.longValue()

  doubt ,Long Object direct comparison is OK , stay stream Not in the middle ：

        Long as = 1234l;
        long b = 1234l;
        long c = 11234l;
        System.out.println(as != b);
        System.out.println(as != c);

result