JAVA Scanner 重复输入的有关问题

import java.util.*;public class firstname {    static public Scanner input = new Scanner(System.in);    static public LinkedList<String> fname;    public firstname() {    }    /**     * @category Write a program that reads in a series of first names and     *           stores them in a LinkedList. Do not store duplicate names.     *           Allow the user to search for a first name.     *      */    static String temp;    public static void main(String args[]) {        fname = new LinkedList<String>();        while (input.hasNext()) {            temp = input.next();            for (int i = 0; i < fname.size(); i++) {                if (temp.equals(fname.get(i)))                    continue;            }            fname.add(temp);        }        System.out.println("输入要找的名字");        //input.next();        temp = input.next();        temp = input.next();        for (int i = 0; i < fname.size(); i++) {            if (temp.equals(fname.get(i)))                System.out.printf("The index of %s is %d!", fname.get(i), i);        }    }}