Remove element from TreeSet
boolean remove(Object o)- Removes the specified element from this set if it is present.
import java.util.TreeSet;
public class Main {
public static void main(String[] args) {
TreeSet<Integer> tSet = new TreeSet<Integer>();
System.out.println("Size of TreeSet : " + tSet.size());
tSet.add(new Integer("1"));
tSet.add(new Integer("2"));
tSet.add(new Integer("3"));
System.out.println(tSet.size());
// remove one element from TreeSet using remove method
tSet.remove(new Integer("1"));
System.out.println("Size of TreeSet after removal : " + tSet.size());
}
}
The output:
Size of TreeSet : 0
3
Size of TreeSet after removal : 2