JAVA-清除txt中重复内容

该程序将一批txt文件分别清除重复内容存入一个新的txt文件中。具体思路是，首先对每个txt文件清除重复内容，分别写入temp.txt中转文件中，最后对temp.txt文件清除重复内容，再写入目标txt文件，并删除中转temp.txt文件。package com;import java.util.*;import java.io.*;import javax.swing.JOptionPane;public class ResortByDelRed {public void ResortToTemp(File oldFolder,String tempPath)throws IOException{//String oldPath = oldFolderPath;String str = null;String string = null;Vector vector = new Vector();////定义容器类对象boolean IsRepeat = false;try{BufferedReader reader = new BufferedReader(new FileReader(oldFolder));while((str=reader.readLine())!= null){for(int i=0;i<vector.size();i++){string = (String)vector.elementAt(i);if(string.equals(str.trim())){//去掉前后空格后比较IsRepeat = true;break;}}if(IsRepeat){IsRepeat = false;}else{vector.add(str.trim());}}reader.close();}catch(IOException e){e.printStackTrace();}//创建临时中转txt文件String newFile = tempPath;File tempFile = new File(newFile);if(!tempFile.exists()){tempFile.createNewFile();}try{BufferedWriter writer = new BufferedWriter(new FileWriter(tempFile,true));for(int i=0;i<vector.size();i++){str = (String)vector.elementAt(i);writer.write(str);writer.newLine();}writer.close();}catch(IOException e){e.printStackTrace();}}public void AllResortToTemp(String oldFolderPath,String tempPath)throws IOException{File file = new File(oldFolderPath);File[] childs = file.listFiles();for(int i=0;i<childs.length;i++){ResortToTemp(childs[i],tempPath);}}public void DelTemp(String tempPath)throws IOException{try{File tempFile = new File(tempPath);if(!tempFile.exists()){JOptionPane.showMessageDialog(null, "没有生成temp.txt文件");return;}tempFile.delete();}catch(Exception e){e.printStackTrace();}}public static void main(String[] args)throws IOException{String tempPath = "E:/temp.txt";String sourceFolder = "E:/c";String resultPath = "E:/result.txt";File tempFile = new File(tempPath); ResortByDelRed resort = new ResortByDelRed();resort.AllResortToTemp(sourceFolder,tempPath);//首先放到temp.txt，然后删除resort.ResortToTemp(tempFile,resultPath);//把temp文件再去重放入result文件resort.DelTemp(tempPath);//删除temp.txt中转文件System.out.println("OK");}}