How to split a comma-separated string

Question

I have a String with an unknown length that looks something like this   dog  cat  bear  elephant       giraffe    What would be the optimal way to divide this string at the commas so each word could become an element of an ArrayList   For example  List lt String gt  strings   new ArrayList lt Strings gt        Add the data here so strings get 0  would be equal to  dog      strings get 1  would be equal to  cat  and so forth

User · Answer

in build gradle add Guava       compile group   com google guava   name   guava   version   27 0-jre    and then      public static List lt String gt  splitByComma String str        Iterable lt String gt  split   Splitter on                   omitEmptyStrings                trimResults                split str       return Lists newArrayList split              public static String joinWithComma Set lt String gt  words            return Joiner on       skipNulls   join words           enjoy

User · Answer

You could do this   String str          List lt String gt  elephantList   Arrays asList str split          Basically the  split   method will split the string according to  in this case  delimiter you are passing and will return an array of strings    However  you seem to be after a List of Strings rather than an array  so the array must be turned into a list by using the Arrays asList   utility  Just as an FYI you could also do something like so   String str          ArrayList lt String gt  elephantList   new ArrayList lt  gt  Arrays asList str split          But it is usually better practice to program to an interface rather than to an actual concrete implementation  so I would recommend the 1st option

User · Answer

You can split it and make an array then access like array  String names    prappo prince   String   namesList   names split         you can access like   String name1   namesList  0   String name2   namesList  1     or using loop   for String name   namesList   System out println name       hope it will help you

User · Answer

A small improvement  above solutions will not remove leading or trailing spaces in the actual String  It s better to call trim before calling split  Instead of this    String   animalsArray   animals split    s    s       use   String   animalsArray   animals trim   split    s    s

User · Answer

In Kotlin   val stringArray   commasString replace            split        where stringArray is List lt String gt  and commasString is String with commas and spaces

User · Answer

For completeness  using the Guava library  you d do    Splitter on      split    dog cat fox      Another example   String animals    dog cat  bear elephant   giraffe    zebra   walrus   List lt String gt  l   Lists newArrayList Splitter on      trimResults   split animals       - gt   dog  cat  bear  elephant  giraffe  zebra  walrus    Splitter split   returns an Iterable  so if you need a List  wrap it in Lists newArrayList   as above  Otherwise just go with the Iterable  for example    for  String animal   Splitter on      trimResults   split animals                    Note how trimResults   handles all your trimming needs without having to tweak regexes for corner cases  as with String split     If your project uses Guava already  this should be your preferred solution  See Splitter documentation in Guava User Guide or the javadocs for more configuration options

User · Answer

This is an easy way to split string by comma   import java util     public class SeparatedByComma  public static void main String   args        String listOfStates    Hasalak  Mahiyanganaya  Dambarawa  Colombo        List lt String gt  stateList   Arrays asList listOfStates split               System out println stateList

User · Answer

Remove all white spaces and create an fixed-size or immutable List  See asList API docs   final String str    dog  cat  bear  elephant       giraffe   List lt String gt  list   Arrays asList str replaceAll    s       split           result   dog  cat  bear  elephant       giraffe    It is possible to also use replaceAll   s        but maximum efficiency depends on the use case   see  GurselKoca answer to Removing whitespace from strings in Java

User · Answer

First you can split names like this  String animals    dog  cat  bear  elephant giraffe    String animals list     animals split         to Access your animals   String animal1   animals list 0   String animal2   animals list 1   String animal3   animals list 2   String animal4   animals list 3     And also you want to remove white spaces and comma around animal names  String animals list     animals split    s    s

User · Answer

There is a function called replaceAll   that can remove all whitespaces by replacing them with whatever you want  As an example  String str    15  9 4 16 0 1  String firstAndSecond   str replaceAll    s      split       System out println  First   firstAndSecond 0     Second   firstAndSecond 1      will give you   First 15 94  Second 16 01

User · Answer

You can use something like this    String animals    dog  cat  bear  elephant  giraffe    List lt String gt  animalList   Arrays asList animals split          Also  you d include the libs   import java util ArrayList  import java util Arrays   import java util List

User · Answer

Can try with this worked for me    sg   sg replaceAll               or else   if  sg endsWith                             sg   sg substring 0  sg length   - 1

User · Answer

Use this            List lt String gt  splitString    List lt String gt   Arrays asList jobtype split

User · Answer

Well  you want to split  right   String animals    dog  cat  bear  elephant  giraffe    String   animalsArray   animals split         If you want to additionally get rid of whitespaces around items   String   animalsArray   animals split    s    s

[java] How to split a comma-separated string?

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