contains()方法不适用于Java中的Arrays.asList [英] contains() method is not working for Arrays.asList in java

问题描述

我有一个看起来像这样的字符串对象:

I have a string object that looks like:

String color = "black, pink, blue, yellow";

现在，我想将其转换为数组并查找颜色.像这样:

Now I want to convert it into an array and find a color. Something like this:

boolean check = Arrays.asList(color).contains("pink");

总是给出假的.

有人可以帮我吗?

推荐答案

您的字符串变量color不是数组，因此首先您需要使用split(String dilemeter)方法从该字符串变量创建数组并创建来自拆分的字符串，如下所示:

Your string variable color is not an array, so first of all you need to create array from that string variable with split(String dilemeter) method and create ArrayList from splitted string, like this:

List<String> arrList = Arrays.asList(color.split(", "));

之后，您可以检查arrList是否包含某些元素:

After that you can check if arrList contains some element:

boolean check = arrList.contains("pink");

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