把字符串写入文本文件，在结尾追加内容

来源：互联网发布：矩阵的特征值怎么求编辑：程序博客网时间：2024/04/27 20:53

先把字符串写入文件，在结尾追加内容，利用的是printWriter.println(String s);

package com.file;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;public class FileTest {public static void main(String []args){File file = new File("f:/file.txt");String s = "这是刚开始的文本";FileWriter fileWriter = null;PrintWriter printWriter = null;try { fileWriter = new FileWriter(file); fileWriter.write(s); fileWriter.close();} catch (IOException e) {e.printStackTrace();}finally{if(fileWriter!=null){try {fileWriter.close();} catch (IOException e) {e.printStackTrace();}}}try{String str = "\r\n这是追加的文本";fileWriter = new FileWriter(file,true);printWriter = new PrintWriter(fileWriter);printWriter.println(str);printWriter.close();fileWriter.close();}catch(Exception e){e.printStackTrace();}finally{if(printWriter!=null){printWriter.close();}if(fileWriter!=null){try {fileWriter.close();} catch (IOException e) {e.printStackTrace();}}}}}