java生成.dat文件并写入数据

链接：https://www.iteye.com/blog/nbh219-1865476

（侵删）

1/**
2* @param args
3*/
4public static void main(String s[]) {
5try {
6String url = "F:\\gsm\\";
7String FileName = "info.dat";
8File file = new File(url);
9file.mkdirs();//创建文件夹
10File fil = new File(url);
11fil.createNewFile();
12 
13 
14FileWriter fileWriter=new FileWriter(url+FileName);
15fileWriter.write("gsmc");//写入文件
16fileWriter.close();
17} catch (IOException e) {
18e.printStackTrace();
19}
20}
21}

方法：

1public void writeFile(String result) { 
2        try { 
3                String fileName = "C:/data/Data.dat";
4                File file = new File(fileName);
5                File fileParent = file.getParentFile();
6                if(!fileParent.exists()){
7                    fileParent.mkdirs();
8                    }
9                file.createNewFile();
10//               false:覆盖之前写的  如果是true则为追加
11                BufferedWriter writer = new BufferedWriter (new OutputStreamWriter (new FileOutputStream (file,false),"UTF-8"));
12                writer.write(result);
13                writer.flush();
14                writer.close();
15            } catch (IOException e) {
16                e.printStackTrace(); 
17        } 
18    }