bufferedreader

I want to read the content of a InputStream into a String : private String readToString(InputStream stream) { return new BufferedReader(new InputStreamReader(stream)) .lines().collect(Collectors.joining("\n")); } The stream comes from java.lang.Process . Question: Do I have to explicitly close any of the InputStream , InputStreamReader or BufferedReader in this case? Sidenote: the linked question is NOT a duplicate, as my question is about HOW to properly close the streams, not how to read the stream to a String! You only need to close the outer wrapper, but don't do that explicitly either way

Here's the code: package testpack; import java.io.*; public class InputStreamReadDemo { private void readByte() throws IOException { System.out.print("Enter the byte of data that you want to be read: "); int a = System.in.read(); System.out.println("The first byte of data that you inputted corresponds to the binary value "+Integer.toBinaryString(a)+" and to the integer value "+a+"."); // tried writing System.in.close(); and System.in.reset(); } private void readLine() throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); System.out.print("Enter a line

I have some problems reading file in java: my file is for example: 3,4 2 6 4 1 7 3 8 9 where first line 3 and 4 are the lenght of array A and B and then the element of each array. I made this import java.io.*; import java.util.Arrays; public class Progetto { public static void main(String args[]) { // Open the file that is the first // command line parameter FileInputStream fstream = new FileInputStream("prova.txt"); BufferedReader br = new BufferedReader(new InputStreamReader(fstream)); String strLine = br.readLine(); // step 1 if (strLine != null) { String[] delims = strLine.split(","); //

I try to build a map with the content of a file and my code is as below: System.out.println("begin to build the sns map...."); String basePath = PropertyReader.getProp("oldbasepath"); String pathname = basePath + "\\user_sns.txt"; FileReader fr; Map<Integer, List<Integer>> snsMap = new HashMap<Integer, List<Integer>>(2000000); try { fr = new FileReader(pathname); BufferedReader br = new BufferedReader(fr); String line; int i = 1; while ((line = br.readLine()) != null) { System.out.println("line number: " + i); i++; String[] strs = line.split("\t"); int key = Integer.parseInt(strs[0]); int

Im trying to create a simple chat program, with a "server" and a client, now my problem is that the program blocks while reading messages from the server to the client and vice-versa. This example features the problem with messages from Client to Server. Example of what I have on the server side: private Reader input; private Writer output; try { server = new ServerSocket(this.port); while (true) { Socket connection = server.accept(); serverDisplay("We have a connection"); input = new BufferedReader(new InputStreamReader( connection.getInputStream())); output = new BufferedWriter(new

I am trying to read a BufferedReader that reads in a file containing records separated by commas. I would like to split each string (or record) in between two commas, strip the double quotes, and put each of those into an index of a String array. For example: say I have this line in the file: ("0001", "00203", "82409" (newline) "0002", "00204", "82500" (newline) etc.) I want to put 0001 into a String array[1], I want 00203 into String array[2], and so on.... The following code traverses the file, putting all records in column two into String array[2]. This means, after I execute the code below

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 IOException { BufferedReader inputStream = new BufferedReader(new FileReader( "original.txt")); String

I am trying to read an output from a server using BufferedReader or Scanner but it gets stuck on read() or readLine() objects. It never returns from that line. However, it is working on Windows perfectly. The code to read the output is seen below: while ((serverResponce = this.in.readLine()) != null) { if (serverResponce.compareTo(message) == 0) { break; } } or using Scanner class: Scanner scanner = new Scanner(socket.getInputStream()); while (scanner.hasNextLine()) { serverResponce = scanner.nextLine(); if (serverResponce.compareTo(message) == 0) { break; } } I also tried ready() in