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

// enter code here

使用Java 8流的另外两个扩展版本如下所示

List<String> stringList1 = Arrays.stream(commaSeparated.split(",")).map(String::trim).collect(Collectors.toList());
List<String> stringList2 = Stream.of(commaSeparated.split(",")).map(String::trim).collect(Collectors.toList());

在Java 8中将集合转换为逗号分隔的字符串

listOfString对象包含["A"，"B"，"C"，"D"]个元素-

listOfString.stream().map(ele->"'"+ele+"'").collect(Collectors.joining(","))

输出结果为:- ' A ', ' B ', ' C ', ' D '

和转换字符串数组到列表在Java 8

    String string[] ={"A","B","C","D"};
    List<String> listOfString = Stream.of(string).collect(Collectors.toList());

没有内置的方法，但你可以简单地使用split()方法。

String commaSeparated = "item1 , item2 , item3";
ArrayList<String> items = 
new  ArrayList<String>(Arrays.asList(commaSeparated.split(",")));

此方法将字符串转换为一个数组，并接受两个参数:要转换的字符串和分隔字符串中的值的字符。它转换它，然后返回转换后的数组。

private String[] convertStringToArray(String stringIn, String separators){
    
    // separate string into list depending on separators
    List<String> tempList = Arrays.asList(stringIn.split(separators));
    
    // create a new pre-populated array based on the size of the list
    String[] itemsArray = new String[tempList.size()];
    
    // convert the list to an array
    itemsArray = tempList.toArray(itemsArray);
    
    return itemsArray;
}

List<String> items = Arrays.asList(s.split("[,\\s]+"));