/*
Get Size of Java TreeMap Example
This Java Example shows how to get the size or nubmer of key value pairs
stored in TreeMap using size method.
*/
import java.util.TreeMap;
public class GetSizeOfTreeMapExample{
public static void main(String[] args) {
//create TreeMap object
TreeMap treeMap = new TreeMap();
/*
To get the size of TreeMap use
int size() method of TreeMap class. It returns the number of key value
pairs stored in TreeMap object.
*/
System.out.println("Size of TreeMap : " + treeMap.size());
//add key value pairs to TreeMap using put method
treeMap.put("1","One");
treeMap.put("2","Two");
treeMap.put("3","Three");
System.out.println("Size of TreeMap after addition : " + treeMap.size());
//remove one element from TreeMap using remove method
Object obj = treeMap.remove("2");
System.out.println("Size of TreeMap after removal : " + treeMap.size());
}
}
/*
Output would be
Size of TreeMap : 0
Size of TreeMap after addition : 3
Size of TreeMap after removal : 2
*/
