bufferedreader

This question already has an answer here: Reading lines from an InputStream without buffering 3 answers I have an InputStream which contains a line as a string and then binary data. If I read the line using new BufferedReader(new InputStreamReader(inputStream)) , the binary data is being also read and cannot be re-read. How can I read a line without reading the binary data as well? * Update: It seems that InputStreamReader buffers (reads ahead) as well :( Posted another answer to directly read from the InputStream. Eventually did it manually :( I guess I missed a lot of cases like \r and white

Using the readLine() method of BufferedReader , can you print the first N lines of a stream in reverse order without using a list or an array? I think you can do it through recursion with something like: void printReversed(int n) { String line = reader.readLine(); if (n > 0) printReversed(n-1); System.out.println(line); } How about recursion to reverse the order? Pseudo code: reverse(int linesLeft) if (linesLeft == 0) return; String line = readLine(); reverse(linesLeft - 1); System.out.println(line); Nice question. Here you have one solution based on coordinated threads. Although it's heavy on

My server opens a telnet port on 23999 and when I give telnet localhost 23999 , it shows below : < BP-SAS ==> bplin19 !>telnet 0 23999 Trying 0.0.0.0... Connected to 0. Escape character is '^]'. Please enter password to authenticate: (here i give password for example abc123) Enter 'help' at any point to get a listing of all registered commands... BAS> log set-info 1 ( commad i have entered and it does somthing ) Now Instead of open like this, I have to write java code which does this thing. connect to host 23999 port enter password enter commad Socket soc=new Socket("192.168.9.7",23999); while

Is there a way to receive a Stream<String> stream out of a BufferedReader reader such that each string in stream represents one line of reader with the additional condition that stream is provided directly (before reader read everything)? I want to process the data of stream parallel to getting them from reader to save time. Edit: I want to process the data parallel to reading. I don't want to process different lines parallel. They should be processed in order. Let's make an example on how I want to save time. Let's say our reader will present 100 lines to us. It takes 2 ms to read one line

I'm trying to write a few helper methods to take care of reading and writing an encrypted file. I have two methods which successfully fulfill this and return an InputStream or an OutputStream (which are really the Cipher version) that I can use to read or write to the file. I have confirmed that these methods work peachy keen when wrapped with an Object stream and used to read and write an encrypted Object to file. However, the problem arises when I try to read from an encrypted text file. I can verify that the String I feed it is being encrypted and written to the correct file, but when I try

I am working on an app that takes the .txt file from a phone as input and prints it on the TextView, public class MainActivity extends AppCompatActivity { Button button; Intent intent;private StringBuilder text = new StringBuilder(); private InputStream getResources(String s) { return null; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) findViewById(R.id.btn); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { intent = new Intent(Intent

I use a BufferedReader to read lines from an InputStream. When I read something directly from the InputStream, the BufferedReader ignores my read and continues reading at the same location. Is it possible to prevent this behavior? If not what is a good practice to do this? PS: Here's my code: byte[] ba = new byte[1024*1024]; int off = 0; int len = 0; do { len = Integer.parseInt(br.readLine()); in.read(ba, off, len); br.readLine(); off += len; } while(len > 0); in is my inputstream and br my bufferedreader. If not what is a good practice to do this? This is not a good approach to read by 2

I get the following error: multiprocessing.pool.MaybeEncodingError: Error sending result: '<multiprocessing.pool.ExceptionWithTraceback object at 0x7f758760d6a0>'. Reason: 'TypeError("cannot serialize '_io.BufferedReader' object",)' When running this code: from operator import itemgetter from multiprocessing import Pool import wget def f(args): print(args[1]) wget.download(args[1], "tests/" + target + '/' + str(args[0]), bar=None) if __name__ == "__main__": a = Pool(2) a.map(f, list(enumerate(urls))) #urls is a list of urls. What does the error mean and how can I fix it? First couple of

I'm attempting to output a text file to the console with Java. I was wondering what is the most efficient way of doing so? I've researched several methods however, it's difficult to discern which is the least performance impacted solution. Outputting a text file to the console would involve reading in each line in the file, then writing it to the console. Is it better to use: Buffered Reader with a FileReader, reading in lines and doing a bunch of system.out.println calls? BufferedReader in = new BufferedReader(new FileReader("C:\\logs\\")); while (in.readLine() != null) { System.out.println