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Get Size of TreeSet in Java
To get the size of TreeSet, use the size() method.
Create a TreeSet and add elements to it −
TreeSet<String> tSet = new TreeSet<String>();
tSet.add("78");
tSet.add("56");
tSet.add("88");
tSet.add("12");Now, get the size of the TreeSet −
tSet.size()
The following is an example to get the size of TreeSet in Java −
Example
import java.util.*;
public class Demo {
public static void main(String args[]){
TreeSet<String> tSet = new TreeSet<String>();
tSet.add("78");
tSet.add("56");
tSet.add("88");
tSet.add("12");
System.out.println("TreeSet elements...");
Iterator<String> i = tSet.iterator();
while(i.hasNext()){
System.out.println(i.next());
}
System.out.println("Size of TreeSet = " + tSet.size());
System.out.println("Removing Highest Value = "+tSet.pollLast());
System.out.println("
Updated TreeSet elements...");
i = tSet.iterator();
while(i.hasNext()){
System.out.println(i.next());
}
System.out.println("Size of TreeSet after removing an element = " + tSet.size());
}
}Output
TreeSet elements... 12 56 78 88 Size of TreeSet = 4 Removing Highest Value = 88 Updated TreeSet elements... 12 56 78 Size of TreeSet after removing an element = 3
Updated on: 30-Jul-2019
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