java实现找出两个文件中相同的单词(两种方法)

 package com.zy.DesignPrinciples.singleresponsibility; import javax.print.DocFlavor; import java.io.BufferedReader; import java.io.FileReader; import java.util.HashSet; /** * @ClassName: ReaderComplete * @Author: Tiger * @Title: 找出两个文件中相同的单词 * @Datetime: 2020/8/19 19:49 * @Package: com.zy.DesignPrinciples.singleresponsibility */ public class ReaderComplete { public static void main(String[] args) throws Exception { String s = loadFile("F:\\.temp\\1.txt"); String s1 = loadFile("F:\\.temp\\2.txt"); String[] words1 = parseWordsFromString(s); String[] words2 = parseWordsFromString(s1); String[] words = findTheSameWords(words1, words2); for (String word : words) { System.out.println(word); } } //加载文件内容，并将文本内容解析返回出去 public static String loadFile(String path) throws Exception { FileReader reader = new FileReader(path); //bufferedReader 一次只能读一行内容 BufferedReader br = new BufferedReader(reader); String line = null; StringBuilder sb = new StringBuilder(); while ((line = br.readLine()) != null) { sb.append(line); sb.append("\n"); } br.close(); return sb.toString(); } //将解析的内容变成数组 public static String[] parseWordsFromString(String string) { String[] strings = string.split("[^a-zA-Z]+"); return strings; } //查询两文件的相同代码 public static String[] findTheSameWords(String[] s1,String[] s2){ HashSet set = new HashSet<>(); for (int i = 0; i 

 public static String[] findTheSameWords2(String[] s1,String[] s2){ //将字符串数组转换成集合 List list = new ArrayList(Arrays.asList(s1)); List list2 = new ArrayList(Arrays.asList(s2)); //计算交集 并且把计算结果存入到list中而且list2并不会改变 list.retainAll(list2); HashSet set = new HashSet<>(list); return set.toArray(new String[] {}); }

 public class ComWords { /** * @ClassName: ComWords * @Description: TODO(获取两个文档的共同词) * @author: Amy_Robot * @date: 2017年3月24日 下午5:16:48 */ public static String getFileContent(String path) { StringBuffer sb = new StringBuffer(); InputStreamReader isr = null; BufferedReader bufferedReader = null; String fileContent="";{ try { String encoding = "utf-8"; File file = new File(path); if (file.isFile() && file.exists()) { // 判断文件是否存在 isr = new InputStreamReader(new FileInputStream(file), encoding);// 考虑到编码格式 bufferedReader = new BufferedReader(isr); String lineTxt = null; while ((lineTxt = bufferedReader.readLine()) != null) { //System.out.println(lineTxt);//输出文档内容 sb.append(lineTxt); } isr.close(); } else { System.out.println("找不到指定的文件"); } } catch (Exception e) { System.out.println("读取文件内容出错"); e.printStackTrace(); } finally { try { if (isr != null) { isr.close(); isr = null; } if (bufferedReader != null) { bufferedReader.close(); bufferedReader = null; } } catch (Exception e) { e.printStackTrace(); } } return sb.toString();} } public static void getComWords(String sourcefile1,String sourcefile2,String targetfile) throws IOException{ BufferedWriter F2Writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(targetfile)))); List list1= new ArrayList(); List list2= new ArrayList(); List list3= new ArrayList(); String a[] =getFileContent(sourcefile1).split("\\s"); for (int j = 0; j