Binary World

CollectionMain06.java package edu.java.collection06; import java.util.Iterator;import java.util.Set;import java.util.TreeSet; // Collection// |__ Set// |__ HashSet, TreeSet public class CollectionMain06 { public static void main(String[] args) {// TreeSet 객체 생성TreeSet set = new TreeSet();// Set set = new TreeSet(); // 다형성 // 데이터 저장: add(element)set.add("One");set.add("Two");set.add("Three");set...