How to convert dot (.) separated string into array list?

Question

In my application I need to convert dot separated string to arraylist. I have seen in many places split function of string is used to separate comma separated string to Array List.I studied in the documentation split function requires expression for splitting.In my case I provided dot and it is not converting.Am I missing something? Please help me.Below is my code I am using

Here,

 groupHierarchy.levelPrefix = 4201.4202;
 ArrayList<String> levelPrefixList = new ArrayList<>(
                Arrays.asList(groupHierarchy.levelPrefix.split(".")));

When I log this it shows

Log.e("tracking","level prefix list is "+ levelPrefixList);

as split method expects a regular expression so you must use \\ ( double slash) to say you need to match .(dot) — SSH, Oct 05 '15 at 06:42

score 3 · Answer 1 · edited May 23 '17 at 12:09

3

Use following:

groupHierarchy.levelPrefix.split("\\.")

public String[] split(String regex) use regex, so you have to escape "."

See Split String on . as delimiter for more details.

edited May 23 '17 at 12:09

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answered Oct 05 '15 at 06:40

Sumit Singh

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How to convert dot (.) separated string into array list?

1 Answers1