1. Java读取txt文件

import java.io.*; import java.util.ArrayList; import java.util.List;public class unitTest {public static void main(String[] args){List<String> checkins = new ArrayList(); // List初始化try{String pathname = "*\\checkins.txt";File filename = new File(pathname);InputStreamReader reader = new InputStreamReader(new FileInputStream(filename));BufferedReader br = new BufferedReader(reader);String line = "";line = br.readLine();while (line != null) {checkins.add(line);line = br.readLine();}}catch (IOException e){throw new RuntimeException(e);}System.out.println(checkins);} }

2. Java写入txt文件

public class unitTest{ static void main(String args[]) { try { File writename = new File(".\\result\\en\\output.txt"); writename.createNewFile(); BufferedWriter out = new BufferedWriter(new FileWriter(writename)); out.write("我会写入文件啦\r\n"); // \r\n为换行 out.flush(); // 把缓存区内容压入文件 out.close();} catch (Exception e) { e.printStackTrace(); } } }

 

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