Java FileWriter如何写入下一行

问题描述

我用下面的代码将记录写入文件。记录可以写在文件中，但是被追加到一行中，每次我调用这个方法的例子：

Hello WorldHello WorldHello WorldHello World

如何修改代码使得输出如下所示，以便在阅读文本时我可以使用line.hasNextLine（）来检查？

Hello World

Hello World

Hello World

Hello World

  //创建文件
 FileWriter fstream = new FileWriter（fileName，true）; 
 BufferedWriter out = new BufferedWriter（fstream）; 
 out.write（c.toString（））; 
 //关闭输出流
 out.close（）; 
 
 //代码我用来读取记录我正在使用|作为分隔符名称和id 
 String fileName = folderPath +listCatalogue.txt; 
 String line =; 
扫描仪扫描仪; 
字符串名称，id; 
 scanner = new Scanner（fileName）; 
 System.out.println（scanner.hasNextLine（））; 
 while（scanner.hasNextLine（））{
 line = scanner.nextLine（）; 
 System.out.println（line）; 
 StringTokenizer st = new StringTokenizer（line，|）; 
 name = st.nextToken（）; 
 id = st.nextToken（）; 
 catalogues.add（new Catalog（name，id））; 
 
 $ / code> 




解决方案

  out.write（c.toString（））; 
 out.newLine（）; 
  

这里是一个简单的解决方案，我希望它可以工作



编辑：
我使用的是\\\
，这显然不是推荐的方法，修改后的答案。


I used the code below to write record into a File. The record can be written in the file, but is append in one Line, each time I call this method example:

Hello WorldHello WorldHello WorldHello World

How can I modify the code so the output look like below, so that when read the text I can use line.hasNextLine() to check?

Hello World
Hello World
Hello World
Hello World

        // Create file
        FileWriter fstream = new FileWriter(fileName, true);
        BufferedWriter out = new BufferedWriter(fstream);
        out.write(c.toString());
        //Close the output stream
        out.close();

        // Code I used to read record I am using | as a seperator name and id
        String fileName = folderPath + "listCatalogue.txt";
        String line = "";
        Scanner scanner;
        String name, id;
        scanner = new Scanner(fileName);
        System.out.println(scanner.hasNextLine());
        while (scanner.hasNextLine()) {
            line = scanner.nextLine();
            System.out.println(line);
            StringTokenizer st = new StringTokenizer(line, "|");
            name = st.nextToken();
            id = st.nextToken();
            catalogues.add(new Catalogue(name, id));
        }

解决方案

out.write(c.toString());
out.newLine();

here is a simple solution, I hope it works

EDIT:I was using "\n" which was obviously not recommended approach, modified answer.

这篇关于Java FileWriter如何写入下一行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！