Explanatory Question
Can we open an existing file for writing? If not, why?
Read the answer carefully and go through the related questions on the right side to improve your understanding of this topic.
Yes; however, by default, the output streams will overwrite existing contents unless the "append" boolean is set to true in the constructor.
First read the answer fully, then try to explain it in your own words. After that, open a few related questions and compare the concepts. This method helps you remember the topic for a longer time and improves exam preparation.