如何將逗號分隔的String轉換爲ArrayList？

本文翻譯自：How to convert comma-separated String to ArrayList?

Is there any built-in method in Java which allows us to convert comma separated String to some container (eg array, List or Vector)? Java中是否有任何內置方法允許我們將逗號分隔的String轉換爲某個容器（例如數組，List或Vector）？ Or do I need to write custom code for that? 或者我需要爲此編寫自定義代碼？

String commaSeparated = "item1 , item2 , item3";
ArrayList<String> items = //method that converts above string into list??

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#1樓

參考：https://stackoom.com/question/VQ8Z/如何將逗號分隔的String轉換爲ArrayList

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#2樓

在groovy中，您可以使用tokenize（Character Token）方法：

list = str.tokenize(',')

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#3樓

An example using Collections . 使用Collections的示例。

import java.util.Collections;
 ...
String commaSeparated = "item1 , item2 , item3";
ArrayList<String> items = new ArrayList<>();
Collections.addAll(items, commaSeparated.split("\\s*,\\s*"));
 ...

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#4樓

Here is another one for converting CSV to ArrayList: 這是另一個將CSV轉換爲ArrayList的方法：

String str="string,with,comma";
ArrayList aList= new ArrayList(Arrays.asList(str.split(",")));
for(int i=0;i<aList.size();i++)
{
    System.out.println(" -->"+aList.get(i));
}

Prints you 打印你

-->string - >字符串
-->with - >使用
-->comma - >逗號

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#5樓

This code will help, 這段代碼會有所幫助，

String myStr = "item1,item2,item3";
List myList = Arrays.asList(myStr.split(","));

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#6樓

List commaseperated = new ArrayList();
String mylist = "item1 , item2 , item3";
mylist = Arrays.asList(myStr.trim().split(" , "));

// enter code here