bufferedreader

问题 I'm reading in a text file formated like word definiton word definition definition word definition So I need to keep try of whether I'm in a definition or not based on when I reach those emtpy lines. Thing is, BufferedReader discards \n characters, and somehow comparing that empty line to String "" is not registering like I thought it would. How can I go about doing this. 回答1: Make sure you use: myString.equals("") not myString == "" . After 1.6, you can use myString.isEmpty() You can use

问题 I have three questions. To explain, I was reviewing someone's code, and noticed BufferedReader s sometimes aren't being closed. Usually, Eclipse gives a warning that this is a potential memory leak (and I fix it). However, within a Callable inner class, there is no warning. class outerClass { ... public void someMethod() { Future<Integer> future = outputThreadPool.submit(new innerClass(this.myProcess.getInputStream(), threadName)); ... } class innerClass implements Callable<Integer> { private

问题 I have three questions. To explain, I was reviewing someone's code, and noticed BufferedReader s sometimes aren't being closed. Usually, Eclipse gives a warning that this is a potential memory leak (and I fix it). However, within a Callable inner class, there is no warning. class outerClass { ... public void someMethod() { Future<Integer> future = outputThreadPool.submit(new innerClass(this.myProcess.getInputStream(), threadName)); ... } class innerClass implements Callable<Integer> { private

问题 How can I read all of a BufferedReader 's lines and store into a String? val br = new BufferedReader(...) val str: String = getAllLines(br) // getAllLines() -- is where I need help Similar to this question. 回答1: This is how I deal with a BufferedReader in Scala: val br:BufferedReader = ??? val strs = Stream.continually(br.readLine()).takeWhile(_ != null) You will have a string for each line from the reader. If you want it in one single string: val str = Stream.continually(br.readLine())

问题 I am trying to read text from a text file. There are some special characters like å,ä and ö. When i make a string and print out that string then i get ?? from these special characters. I am using the following code: File fileDir = new File("files/myfile.txt"); BufferedReader br = new BufferedReader(new InputStreamReader( new FileInputStream(fileDir), "UTF8")); String strLine; while ((strLine = br.readLine()) != null) { System.out.println("strLine: "+strLine); } Can anybody tell me whats the

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . BufferedReader.readLine() do not read and hang the system(wait) . InputStream istrm = runtimeProcess.getInputStream(); InputStreamReader istrmrdr = new InputStreamReader(istrm); BufferedReader buffrdr = new

问题 i'm learning java and i faced some problems with sockets. I developed a simple client-server app - kind of knock-knock, it performs 4 steps: client sends some message to server server recieves them and saves to file server sends back to client some other messages client recieves them and also saves to file Problem appears on step #4: client doesn't recieve messages and never gets out the loop: while ((inStr = in.readLine()) != null) { writer.println(inStr); } where in is type of

问题 Is there a way to read a ByteBuffer with a BufferedReader without having to turn it into a String first? I want to read through a fairly large ByteBuffer as lines of text and for performance reasons I want to avoid writing it to the disk. Calling toString on the ByteBuffer doesn't work because the resulting String is too large (it throws java.lang.OutOfMemoryError: Java heap space). I would have thought there would be something in the API to wrap a ByteBuffer in a suitable reader, but I can't

问题 I have 14 lists and each list have either numeric or string data. Size of each list is 32561. I have to output a file with the format: list1_element1 list2_element1.......................list14_element1 list1_element2 list2_element2.......................list14_element2 . . . . . list1_element32561 list2_element32561.......................list14_element32561 Each element in output file is separated by tab space. I did it like this in Java. out = new BufferedWriter(new FileWriter(fileName));

问题 Python 3. I'm using QT's file dialog widget to save PDFs downloaded from the internet. I've been reading the file using 'open', and attempting to write it using the file dialog widget. However, I've been running into a"TypeError: '_io.BufferedReader' does not support the buffer interface" error. Example code: with open('file_to_read.pdf', 'rb') as f1: with open('file_to_save.pdf', 'wb') as f2: f2.write(f1) This logic works properly with text files when not using the 'b' designator, or when