处理IOStream异常

    public static void main(String[] args){
        FileWriter fw = null;

        try {
            fw = new FileWriter("IO1\\a",true);
        } catch (IOException e) {
            System.out.println(e);
        }finally {
            if(fw != null){
                try {
                    fw.close();
                } catch (IOException e) {
                    System.out.println(e);
                }
            }
        }

    }