treesetcl.java

来自「this is an online shopping project」· Java 代码 · 共 15 行

import java.util.*;

class treesetcl{
  public static void main(String args[]){
    TreeSet tree=new TreeSet();

    tree.add("c");
    tree.add("a");
    tree.add("d");
    tree.add("e");
    tree.add("b");
  
    System.out.println(tree);
  }
}