Question

How to get sorted head from TreeSet in Java

Answer 1

package javaapplication1;

import java.util.SortedSet;
import java.util.TreeSet;

public class JavaApplication1 {

    public static void main(String[] args) {

        TreeSet treeSet = new TreeSet();
        
        treeSet.add("3");
        treeSet.add("4");
        treeSet.add("2");
        treeSet.add("1");
        treeSet.add("7");
        treeSet.add("6");
        treeSet.add("5");
   
        SortedSet sortedSet = treeSet.headSet("4");
   
        System.out.println(sortedSet);
    }
}
 
/*

run:

[1, 2, 3]

 

70+ SQL courses for beginners and professionals