bufferedreader

问题 I know this topic probably has been covered before but I cant find an answer to the my problem. I have a file that contains some words I need to read. It works normally on my desktop version, but wen I try to run on an emulator, I get java.io.FileNotFoundException - no file found . I understand I have to load the file in a different way than the desktop. Any help would be appreciated. Here is the code for reading the file. String line; try { BufferedReader br = new BufferedReader(new

问题 So, I'm reading from a BufferedReader. Everything goes fine, until I add one condition. I need to read from BufferedReader for a specific duration of time. This is what I'm doing right now. while ((line = br.readLine()) != null && System.currentTimeMillis() - start < maxReadTime.toMillis()) { // doingSomethingHere() } The problem: InputStream is active even after the time has elapsed. For example - maxReadTime is 30 seconds. the input keeps coming in 20 seconds. For the next 12 seconds, there

问题 I'm currently using Java sockets in a client-server application with OutputStream and not BufferedOutputStream (and the same for input streams). The client and server exchanges serialized objects (writeObject() method). Does it make sense (more speed) to use BufferedOutputStream and BufferedInputStream in this case? And when I have to flush or should I not write a flush() statement? 回答1: Does it make sense (more speed) to use BufferedOutputStream and BufferedInputStream in this case? Actually

问题 I want to have the output of logger and inputstream in the eclipse console. But everytime I execute, the result is always not in the same order. I have several classes with one main class to call the others and I put logger to each method for debugging. I print the result to console. I also have the method to retrieve the inputstream as string and print it into console. The output example mai 19, 2015 4:10:58 PM ScriptPack.Section findSection INFO: findSection OK mai 19, 2015 4:10:58 PM

问题 I want to be able to update a certain line on a text file. But I get the error that it cannot delete the file, why do I get this error? public class Main { public static void main(String[] args) { Main rlf = new Main(); rlf.removeLineFromFile("F:\\text.txt", "bbb"); } public void removeLineFromFile(String file, String lineToRemove) { try { File inFile = new File(file); if (!inFile.isFile()) { System.out.println("Parameter is not an existing file"); return; } //Construct the new file that will

问题 I want to read in a grid of numbers (n*n) from a file and copy them into a multidimensional array, one int at a time. I have the code to read in the file and print it out, but dont know how to take each int. I think i need to splitstring method and a blank delimiter "" in order to take every charcter, but after that im not sure. I would also like to change blank characters to 0, but that can wait! This is what i have got so far, although it doesnt work. while (count <81 && (s = br.readLine())

问题 I am entering lines from input (IDE eclipse Luna) on pressing enter the cursor keeps moving down but no output shows up. In tried second method but i have to press enter twice to print output how can i fix both errors . Why in second method as soon as it detects blank line it doesn't print why i have to press enter twice And what commands goes when we press enter in console FIRST METHOD private static String para = null; public static void main(String[] args) throws IOException {

问题 I need to read the first n lines of a text file as lines (each line may or may not contain whitespace). The remainder of the text file contains an unknown number N of tokens that are whitespace-delimited (delimiters are a mixture of space, tab, and newline characters, all to be treated identically as delimiters). I know how to read lines using BufferedReader. I know how to read tokens using Scanner. But how do I combine these two different modes of reading for a single text file, in the above

问题 I want to counter the lines of the file and in the second pass i want to take every single line and manipulating it. It doesn't have a compilation error but it can't go inside the second while ((line = br.readLine()) != null) . Is there a different way to get the lines(movies) of the file and storing in an array ? BufferedReader br = null; try { // try to read the file br = new BufferedReader(new FileReader("movies.txt")); String line; int numberOfMovies = 0; while ((line = br.readLine()) !=

问题 I'm cleaning up some chunks of our codebase at work, and one of the older classes is used to read and write data. This data is a mixture of US-ASCII encoded Strings and binary encoded primitives. The current implementation uses DataInputStream, but as you can see in the documentation the readLine() method is deprecated because of an issue related to converting bytes to characters. While this encoding issue hasn't really popped up for us, the deprecation is an issue since it already doesn't