add String to a List of Objects in Java

Question

List<PhoneBook> list = new ArrayList<PhoneBook>();
String str = "new PhoneBook("David","234567");";

How can I add (or convert) str to code and add it to the list?

I have searched all over the internet, and didn't find anything helpful.

Does this answer your question? [Run piece of code contained in a String](https://stackoverflow.com/questions/4389232/run-piece-of-code-contained-in-a-string) — mypetlion, Jan 11 '20 at 00:10
In general, you shouldn't. But if you feel you must, that link will help you out. — mypetlion, Jan 11 '20 at 00:10
This seems like an XY problem. Why do you *want* to doing that? — Dave Newton, Jan 11 '20 at 00:18
i need to convert str to an Object of type PhoneBook and then add it to the List — bara, Jan 11 '20 at 00:30

score 0 · Answer 1 · answered Jan 11 '20 at 00:08

To convert it to fit the arraylist you've given:

List<PhoneBook> list = new ArrayList<>();
PhoneBook not_a_str = new PhoneBook("David","234567");
list.add(not_a_str);

To add strings to a list of objects:

List<Object> list = new ArrayList<>();
String str = "new PhoneBook(\"David\",\"234567\")";
list.add(str);

To add strings to a list of strings (also objects):

List<String> list = new ArrayList<>();
String str = "new PhoneBook(\"David\",\"234567\")";
list.add(str);
list.add("Anything else");

Good luck with java

1 Answers1