Java中给txt文本中写入数据

 public static void main(String[] args) {
        //txt文件生成的位置
        File outFile = new File("D:\\ce\\test.txt");
        //集合数据
        ArrayList list = new ArrayList<>();
        list.add("1");
        list.add("2");
        Writer out;
        try {
            //输入流,进行写入操作
            out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile, true), "utf-8"), 10240);
            for (int i = 0; i < list.size(); i++) {
                //开始写
                out.write(
                        "测试第" + i + "行:" + list.get(i));
                out.write("\r\n");
            }
            //清空缓存区,完全写入
            out.flush();
            //关闭流
            out.close();
        } catch (Exception e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
    }

结果