从ArrayList检索某些值 <HashMap<String, String> &gt;

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

Answer 1

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

Answer 2

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