代码语言：javascript复制
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<String> set = new HashSet<>();
for (int i = 0; i < s1.length; i ) {
for (int j = 0; j < s2.length; j ) {
if (s1[i].equals(s2[j])){
set.add(s1[i]);
}
}
}
return set.toArray(new String[] {});
}
}第二种比较单词的方法：将string【】数组转换成集合，通过集合的retainAll()方法 两个集合取交集
代码语言：javascript复制public static String[] findTheSameWords2(String[] s1,String[] s2){
//将字符串数组转换成集合
List<String> list = new ArrayList(Arrays.asList(s1));
List<String> 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<String> set = new HashSet<>(list);
return set.toArray(new String[] {});
}
