TreeSet in Java — a practical guide to Java TreeSet with clear examples you can reuse in real projects.
Java Tutorial Series (54/90). Prefer one article? Read the complete Java tutorial.
Short description
`TreeSet` uses natural ordering or a Comparator and does not allow null (in typical use).
TreeSet
import java.util.TreeSet;
TreeSet<String> set = new TreeSet<>();
set.add("c");
set.add("a");
System.out.println(set); // [a, c]