在链表上实现单词统计

public class WordNode{
	private int freq;
	private String word;
	private WordNode next;
	public WordNode(String word){
		this.word = word;
		this.freq = 0;
		
	}
	public int getFreq() {
		return freq;
	}
	public void setFreq(int freq) {
		this.freq = freq;
	}
	public String getWord() {
		return word;
	}
	public void setWord(String word) {
		this.word = word;
	}
	public WordNode getNext() {
		return next;
	}
	public void setNext(WordNode next) {
		this.next = next;
	}

	public  boolean equals(WordNode o) {
		
		return this.getWord().equals(o.getWord());
	}
	

}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.text.MessageFormat;
import java.util.ArrayList;

public class WordLinkList {
	String filePath;
	private WordNode startNode;
	ArrayList<String[]> wordList;
	public WordLinkList(String filePath){
		this.filePath = filePath;
		readDataFile();
		
	}
	private void readDataFile() {
		File file = new File(filePath);
	    wordList = new ArrayList<String[]>();
		try{
			BufferedReader in = new BufferedReader(new FileReader(file));
			String str;
			String temp[];
			while((str=in.readLine())!=null){
				temp = str.split(" ");
				wordList.add(temp);
				
			}
			in.close();
		}catch(IOException e){
			e.printStackTrace();
			
		}
		
	}
	//我要建立一个链表是不是需要，第一判断当前建的结点是否已经存在了，另外我还要判断要建的这个结点要健在什么地方
	
	public void buildLinkList(){
		//初始化一个链表,循环wordList,
		this.startNode = new WordNode(wordList.get(0)[0]);
		WordNode node = startNode;
		WordNode tempNode;
		for(String[] temp:wordList){
			for(String str:temp){
				//注意还要判断当前链表中是否已经存在
				tempNode = new WordNode(str);
				//生成节点之后在判断是有点不太好哈，直接判断单词是否存在
				
				if(!isExit(tempNode)){
				tempNode.setFreq(1);
				node.setNext(tempNode);
				node = tempNode;
				}else{//查找该节点，并且域上+1;
					tempNode =searchWordNode(str);
					tempNode.setFreq(tempNode.getFreq()+1);
					
					
				}
				
				
			}
			
			
		}
		printLinkList();
	}
	//判断单词相同的结点是否存在
	public boolean isExit(WordNode node){
		boolean isExit = false;//默认是不存在的
		//遍历当前序列
		WordNode start = this.startNode;
		WordNode tempNode =start;
		while(tempNode!=null){
			if(tempNode.equals(node)){
				//找到
				isExit = true;
				break;
				
			}
			tempNode = tempNode.getNext();
			
		}
		return isExit;
		
		
	}
	public WordNode searchWordNode(String str){
	    //在链表中查找具有相同单词的结点，并且返回
		WordNode start = this.startNode;
		WordNode temp = start;
		while(temp!=null){
			if(temp.getWord().equals(str)){
				return temp;
				
			}
			temp = temp.getNext();
			
		}
		
		return null;
		
		
	}
	//把这个链表打印出来
	public void printLinkList(){
		WordNode start = this.startNode;
		WordNode temp = start;
		while(temp!= null){
			System.out.print(MessageFormat.format("结点单词为:{0},单词频度为：{1}",temp.getWord(),temp.getFreq()));
			System.out.println();
			temp = temp.getNext();
		}
		
	}

}

结点单词为:word,单词频度为：2
结点单词为:count,单词频度为：2
结点单词为:another,单词频度为：2
结点单词为:link,单词频度为：2
结点单词为:sun,单词频度为：1
结点单词为:yellow,单词频度为：1