retrieving certain values from ArrayList<HashMap<String, String>>

Question

i have this arrayalist:

 ArrayList<HashMap<String, String>> contactListad

it contains:

[{emailAddress=samir, lastName=samir, contactId=4, phoneNumber=6449494, firstName=samir, homeAddress=paris}, {emailAddress=, lastName=, contactId=6, phoneNumber=, firstName=Rashad, homeAddress=las vegas}, {emailAddress=, lastName=, contactId=9, phoneNumber=, firstName=joe, homeAddress=paris}]

My question iy ifs how can i get the values and store them in another arraylist i want to specify to store only the values having a certain homeAddress equals paris for example. i hope my question is clear enough

for example if i specify the homeAddress to be paris, i want the output to be an arraylist containing

[{emailAddress=samir, lastName=samir, contactId=4, phoneNumber=6449494, firstName=samir,     
homeAddress=paris},{emailAddress=, lastName=, contactId=9, phoneNumber=, firstName=joe,    
homeAddress=paris}]

so without the hasmap that has homeAddress equals las vegas

Thank you

I'm not sure I'm following. Can you share the output you're trying to get? — Mureinik
– Mureinik, Commented Oct 9, 2014 at 11:31

Dima · Accepted Answer · 2014-10-09 11:43:56Z

4

List<HashMap<String,String>> newArray = new ArrayList<HashMap<String, String>>();

for(HashMap<String, String> hm : contactListad){
    String val = hm.get("homeAddress");
    if("paris".equals(val)){
        newArray.add(hm);
    }

}

now you have what you want in newArray

edited Oct 9, 2014 at 11:43

answered Oct 9, 2014 at 11:35

Dima

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2 Comments

Akash Thakare Over a year ago

+1.But bad practice to name a variable as newArray which is actually a list.

Dima Over a year ago

@TAsk you are 100% right, but i just gave him an example

Akash Thakare · Accepted Answer · 2014-10-09 11:50:41Z

0

    for(HashMap<String, String> hashMap : contactListad) {
        String homeAdress = hashMap.get("homeAdress");
        if (homeAdress.equals("Paris")) {
            //write your code here
        }
    }

edited Oct 9, 2014 at 11:50

Akash Thakare

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answered Oct 9, 2014 at 11:37

mreiterer

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1 Comment

mreiterer Over a year ago

no i did not. i had the edit window open and did not see your answer. and hey - what should the solution look like other than the 2 answers posted ?? anyway thanks for the downvote

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