PrintWriter gives more methods (println), but the most important (and worrying) difference to be aware of is that it swallows exceptions. You can call checkError later on to see whether any errors have occurred, but typically you’d use PrintWriter for things like writing to the console – or in “quick ‘n dirty” apps where you … Read more
The problem in your code is that it’s creating lots of heavy String objects, copying their contents and performing operations on them. Instead, you should use StringBuilder to avoid creating new String objects on each append and to avoid copying the char arrays. The implementation for your case would be something like this: BufferedReader r … Read more
BufferedReader can’t wrap an InputStream directly. It wraps another Reader. In this case you’d want to do something like: BufferedReader br = new BufferedReader(new InputStreamReader(is, “UTF-8”));
no. BufferedReader.close() closes the stream according to javadoc for BufferedReader and InputStreamReader as well as FileReader.close() does.
Scanner is used for parsing tokens from the contents of the stream while BufferedReader just reads the stream and does not do any special parsing. In fact you can pass a BufferedReader to a scanner as the source of characters to parse.