Freemarker iterating over hashmap keys

Question

Freemarker has two collection datatypes, lists and hashmaps Is there a way to iterate over hashmap keys just as we do with lists?

So if I have a var with data lets s

Answer 1

You can use a single quote to access the key that you set in your Java program.

If you set a Map in Java like this

Map hash = new HashMap();
hash.put("firstname", "a");
hash.put("lastname", "b");

Map map = new HashMap();
map.put("hash", hash);

Then you can access the members of 'hash' in Freemarker like this -

${hash['firstname']}
${hash['lastname']}

Output :

a
b