Get Size of Java TreeSet Example
|
|
|
/*
Get Size of Java TreeSet Example
This Java Example shows how to get the size or nubmer of elements stored in
Java TreeSet object using size method.
*/
import java.util.TreeSet;
public class GetSizeOfJavaTreeSetExample{
public static void main(String[] args) {
//create TreeSet object
TreeSet tSet = new TreeSet();
/*
To get the size of TreeSet use
int size() method of TreeSet class. It returns the number of elements
stored in TreeSet object.
*/
System.out.println("Size of TreeSet : " + tSet.size());
//add elements to TreeSet object
tSet.add(new Integer("1"));
tSet.add(new Integer("2"));
tSet.add(new Integer("3"));
System.out.println("Size of TreeSet after addition : " + 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());
}
}
/*
Output would be
Size of TreeSet : 0
Size of TreeSet after addition : 3
Size of TreeSet after removal : 2
*/ 
