在某位置建立*.txt文本，复制代码，测试一下输出“123”

public class Test {
    public static void rwFile(){
        FileWriter fw = null;
        try {
            fw = new FileWriter("C:\\text.txt", true);//路径一定要用"\\"
                fw.write("123");//这里向文件中输入结果123
                fw.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fw != null) {
                try {
                    fw.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
    public static void main(String[] args) {
        rwFile();
    }
}