Create sub-array list from an ArrayList

Question

I have an ArrayList such as this one

ArrayList<String> listed = new ArrayList<>();

listed.add("sun, water, autumn");
listed.add("moon, wind, winter");
listed.add("venus, fire, summer");

and I would like to create three separate ArrayList so that first one contains

("sun, moon, venus")

second one

("water, wind, fire")

and last

("autumn, winter, summer")

Thanks

Thanks you all for your very useful help

Alberto acepsut
– Alberto acepsut

2013-08-30 09:55:07 +00:00
Commented Aug 30, 2013 at 9:55 — Alberto acepsut
– Alberto acepsut, Commented Aug 30, 2013 at 9:55

Ruchira Gayan Ranaweera · Accepted Answer · 2013-08-30 09:52:03Z

3

Try this

    ArrayList<String> listed = new ArrayList<>();
    listed.add("sun, water, autumn");
    listed.add("moon, wind, winter");
    listed.add("venus, fire, summer");
    List<String> subList1=new ArrayList<>();
    List<String> subList2=new ArrayList<>();
    List<String> subList3=new ArrayList<>();
    for(String i:listed){
         subList1.add(i.split(",")[0]);
         subList2.add(i.split(",")[1]);
         subList3.add(i.split(",")[2]);
    }

answered Aug 30, 2013 at 9:52

Ruchira Gayan Ranaweera

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Comments

Suresh Atta · Accepted Answer · 2013-08-30 09:44:43Z

0

Assuming you have a Fixed format

    List<String> list1 =  Arrays.asList(listed.get(0).split(",")); 
    List<String> list2 =  Arrays.asList(listed.get(1).split(",")); 
    List<String> list3 =  Arrays.asList(listed.get(2).split(","));

answered Aug 30, 2013 at 9:44

Suresh Atta

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Comments

MansoorShaikh · Accepted Answer · 2013-08-30 09:49:04Z

0

ArrayList finalList  = new ArrayList();
for(String s : listed) {
    finalList.add(Arrays.asList(s.split(",")));  
}

answered Aug 30, 2013 at 9:49

MansoorShaikh

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2 Comments

Fluffeh Over a year ago

When posting answers, it is really a great thing to explain the code that you are posting. Even if it works perfectly and it is tested, adding the explanation of WHY it works is a great thing to do.

MansoorShaikh Over a year ago

Thanks Fluffeh for your valuable comment. I will ensure this going forward.

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