FileWriter的使用及其方法

write常用的几种形式：

 @Test
    public void filewriter()throws IOException{
        String path = "D:\\njust.txt";
        FileWriter fw = new FileWriter(path);
        fw.write("zjc0"+"\n");
        fw.write("zjc1"+"\n");
        fw.write("zjc2"+"\n");
        fw.write("zjc3"+"\n");
        fw.write("zjc4"+"\n");
        fw.write("zjc5"+"\n");
        fw.close();
    }