当我使用 Java 8 Stream.of 原始类型时，结果很混乱 [英] when i use Java 8 Stream.of primitive type, the result is confused

问题描述

 byte[] a = {1,2,3};System.out.println(Stream.of(a).count());字节[] b = {1,2,3};System.out.println(Stream.of(b).count());

结果是1和3，为什么?

解决方案

Stream.of 只接受对象作为其参数.byte 不是 Object，但 byte 数组是.如果a是byte的数组，那么Stream.of(a)只能表示这个对象的流，是一个数组".

如果你有一个 Byte[] 数组，那么数组的每个元素都是一个对象，所以编译器可以猜到你的意思.

这里有关于如何流式传输字节数组的信息:在Java 8中，有ByteStream类吗?p>

    byte[] a = {1,2,3};
    System.out.println(Stream.of(a).count());

    Byte[] b = {1,2,3};
    System.out.println(Stream.of(b).count());

the result is 1 and 3, why?

解决方案

Stream.of only accepts Objects as its arguments. A byte isn't an Object, but a byte array is. If a is an array of byte, then Stream.of(a) can only mean "stream of this one object, which is an array".

If you have a Byte[] array, then each element of the array is an object, so the compiler can guess that's what you mean.

There is information here about how you can stream a byte array: In Java 8, is there a ByteStream class?

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