CODEWITHSUNDEEP
javaandroidloopsarraylist
Swedish Architect
Swedish Architect

Reputation: 399

Iterate through items in arraylist, with an index

I want to iterate through items in an arraylist of objects, with an index as well, so that I can transfer a string (part of object/class) into an ArrayList<String>

My code:

for(PeopleDetails person : people_list; /*not using termination, will terminate at end of people_list */ ;i++){
  /// Code here         
}

However I get an error, saying :

Type mismatch: cannot convert from ArrayList<PeopleDetails> to PeopleDetails.

What causes this error ? Thanks for the help!!

Upvotes: 0

Views: 835

Answers (2)

Ross Drew
Ross Drew

Reputation: 8246

This is not a for-each statement (I've removed your comment for clarity):-

for(PeopleDetails person : people_list;  ;i++)

This is:-

for(PeopleDetails person : people_list)

You're using it like a for statement. If you want to keep an index in a for-each you need to do it manually:-

 int index = 0;
 for(PeopleDetails person : people_list)
 {
   index++;
 }

Further discussion of other ways to iterate over a collection with an index can be found here.

Upvotes: 2

Rakesh KR
Rakesh KR

Reputation: 6527

If your List people_list is of String, Then Try 

ArrayList<String>people_list = new ArrayList<String>(); 
for(String i :people_list){
    //Code
}

Upvotes: 0

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