Question

How can I convert values here:

List<String> values = new ArrayList<String>

to :

ArrayList<Custom>

EDIT:

public class Custom {


    public Custom Parse(String input) {
        // What should I do here?
    }
}

Answer 1

You could use:

List<Custom> customList = new ArrayList<Custom>();
for (String value: values) {
   customList.add(new Custom(value));
}

Although it would be better just to add a constructor with a String argument:

class Custom {
   private final String input;

   public Custom(String input) {
      this.input = input;
   }

   // not needed but implemented for completeness    
   public static Custom parse(String input) {
      return new Custom(input);
   }
}