<<Java语言程序设计>>进阶篇 Exercise22_5

import java.util.*;

public class Exercise22_5{
public static void main(String[] args){
if (args.length == 0){
System.out.println("usage:no letters are input.");
System.exit(0);
}

List<String> linkedList = new LinkedList<String>();
for(int i = 0;i < args.length;i++){
linkedList.add(args[i]);
}

Collections.sort(linkedList);

System.out.println(linkedList);
}
}