bufferedreader

问题 So I did this client server program in java for my college mini project. Note that this is just a small module of a big project I'm working on. I need a string to be sent from the client to the server. The server will return back the string as it is back to the client. (The code will be modified later such that the string is processed before sending back). The client will send a string whenever needed to the server. Thus it means it is compulsory for the server to be running for indefinite

问题 I am trying to read a from the input using BufferedReader. It works the first time but the second time it is ran I get an exception. john@fekete:~/devel/java/pricecalc$ java frontend.CUI > gsdfgd Invalid command! > I/O Error getting string: java.io.IOException: Stream closed I/O Error: java.io.IOException: java.io.IOException: Stream closed > I/O Error getting string: java.io.IOException: Stream closed I/O Error: java.io.IOException: java.io.IOException: Stream closed > I/O Error getting

问题 I have a text file that I need to modify before parsing it. 1) I need to combine lines if leading line ends with "\" and delete white spaced line. this has been done using this code public List<String> OpenFile() throws IOException { try (BufferedReader br = new BufferedReader(new FileReader(path))) { String line; StringBuilder concatenatedLine = new StringBuilder(); List<String> formattedStrings = new ArrayList<>(); while ((line = br.readLine()) != null) { if (line.isEmpty()) { line = line

问题 I have a txtfile called "averages" that looks like: 1 4 5 3 -1 2 8 9 3 2 -1 4 8 15 16 23 42 -1 3 -1 I want to be able to read in each line and calculate the average of each line whenever a "-1" is reached. I have written the code to read in the file and print it to the command line, I'm just having trouble finding the averages of each line. Any help would be greatly appreciated. Thanks! import java.io.*; import java.util.*; public class Test { public static void main(String[] args) {

问题 I was going through the differences between scanner and BufferedReader in Java and one point which I could not understand was that said Scanner is not synchronized while BufferedReader is. Now can anyone please explain what it means? 回答1: Literally, it means what it says. Key operations of the BufferedReader API are implemented using synchronized blocks, and the equivalent operations in Scanner are not. This means that a BufferedReader can be "safely" shared between multiple threads 1 ,

问题 I'm using sockets to communicate between a server and client. For some reason though, the client skips every second line that the server has sent. Client's code: ... out.println(console.readLine()); //Client initiates (sent to server) while ((userOut = in.readLine()) != null) //Waits for response { System.out.println("Server says: " + userOut); //Prints response userIn = console.readLine(); //Gets user input out.println(userIn); //Sends user input to server } ... Servers Code: ... while (

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 7 years ago . I'm trying to figure out why my BufferedReader (reading from an InputStream) just hangs and doesn't read after an empty line is received. Trying to read

问题 I am trying to search a specific word in a specific web page, I'm using Java and Eclipse. The problem is that if I'm taking a web page with almost without content it works fine, but when I'm trying in a "big" web page it doesn't find the word. for example: I am trying to find the word ["InitialChatFriendsList" in the web page: https://www.facebook.com , if it finds the word then print WIN!!! Here is a full Java code: public class BR4Qustion { public static void main(String[] args) {

问题 I am reading a text file and trying to store it into an array char by char. My approach (below) pre-defines a char array with an initial length of 100000 (my main issue here). So, if the file contains characters less than that amount (problem also if more characters than that), then there are nulls in my array. I want to avoid that. Is there a way to predetermine the amount of characters present in a text file? Or is there a better approach altogether to store the file char by char? char buf[

问题 I am learning Java and working on File IO and right now stuck in reading text from One file and write in another file. I am using two different methods first one for reading and displaying text in console from file #1 and using another method to write in file#2. I can successfully read and display contents from File#1 but not sure how to write the text in file#2. Here is the code which I have written so far: import java.io.*; public class ReadnWrite { public static void readFile() throws