java - 使用Java在文件中的每个行首和行尾 append 一个字符

Question

你能帮我解决这个问题吗

我想在我的文本文件中每行的每个开头和结尾放置一些字符/文本，例如

Hi there
Welcome

到

sometext Hi there sometext
sometext Welcome sometext

谢谢

Answer 1

FileInputStream fstream = new FileInputStream("textfile.txt");
        BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
        BufferedWriter bw = new BufferedWriter(new FileWriter(new File("newfile.txt"), true));

        String strLine;

        while ((strLine = br.readLine()) != null)   {
            bw.write("someText" + strLine + "someText");
            bw.newLine();

        }

        bw.close();
        in.close();