查找数组中是否存在字符串 [英] Find if a String is present in an array

问题描述

好吧，假设我有一个填充了 {"tube", "are", "fun"} 的数组，然后我有一个 JTextField，如果我输入这些命令中的任何一个来做某事，如果不是像一个消息说找不到命令".

OK let's say I have an array filled with {"tube", "are", "fun"} and then I have a JTextField and if I type either one of those commands to do something and if NOT to get like a message saying "Command not found".

我尝试查看 Java 文档，但我得到的只是一些我不想要的东西，比如问题之类的……那么，这是如何完成的?我知道有一个数组中"函数，但我不太擅长将两者结合在一起.

I tried looking in Java docs but all I am getting is things that I don't want like questions and stuff... so, how is this done? I know there is a "in array" function but I'm not too good with combining the two together.

谢谢.

这是我目前所拥有的:

String[] dan = {"Red", "Orange", "Yellow", "Green", "Blue", "Violet", "Orange", "Blue"};
boolean contains = dan.contains(say.getText());

但我在 dan.contains 中找不到符号

but I am getting cannot find symbol in dan.contains

推荐答案

这就是您要找的:

List<String> dan = Arrays.asList("Red", "Orange", "Yellow", "Green", "Blue", "Violet", "Orange", "Blue");

boolean contains = dan.contains(say.getText());

如果您有一个不重复值的列表，最好使用具有相同包含方法

If you have a list of not repeated values, prefer using a Set<String> which has the same contains method

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