Adding to an ArrayList Java

Question

I am a beginner to java, and need some help.

I am trying to convert an Abstract Data type Foo which is an associated list to an Arraylist of the strings B. How do you loop through the list and add each string to the array.

I may be over thinking it, but I am lost now.

Thanks for the help in advance.

Answer 1

Instantiate a new ArrayList:

List<String> myList = new ArrayList<String>(); 

Iterate over your data structure (with a for loop, for instance, more details on your code would help.) and for each element (yourElement):

myList.add(yourElement); 

Answer 2

If you have an arraylist of String called 'foo', you can easily append (add) it to another ArrayList, 'list', using the following method:

ArrayList<String> list = new ArrayList<String>(); list.addAll(foo); 

that way you don't even need to loop through anything.