IT. Expert System.

Java basics

first()


The first() method is used to return the first (lowest) element currently in this set.

Syntax:
public E first()


Example:

import java.util.TreeSet;

public class TreeSetDemo {
   public static void main(String[] args) {
     // creating a TreeSet 
     TreeSet treeadd = new TreeSet();
     
     // adding in the tree set
     treeadd.add(12);
     treeadd.add(11);
     treeadd.add(16);
     treeadd.add(15);
     
     // getting the first lowset element
     System.out.println("First lowest element: "+treeadd.first());   
   }    
}


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