bufferedreader

问题 My Dears, I'm flighting to can read multiple CSV Files from Google Cloud Firebase Store. I'm doing that: new GetCompaniesCsvFile().execute("companies.csv"); and new GetLinesCsvFile().execute("lines.csv"); Both Classes Does that: private static class GetLinesCsvFile extends AsyncTask<String, Integer, Reader> { @Override protected Reader doInBackground(String... tableName) { return getLinesCsvFile(tableName[0]); } @Override protected void onPostExecute(Reader reader) { importLinesFromCsv(reader

问题 My Dears, I'm flighting to can read multiple CSV Files from Google Cloud Firebase Store. I'm doing that: new GetCompaniesCsvFile().execute("companies.csv"); and new GetLinesCsvFile().execute("lines.csv"); Both Classes Does that: private static class GetLinesCsvFile extends AsyncTask<String, Integer, Reader> { @Override protected Reader doInBackground(String... tableName) { return getLinesCsvFile(tableName[0]); } @Override protected void onPostExecute(Reader reader) { importLinesFromCsv(reader

问题 In a JSP project I am reading a file from directory. If i give the full path then i can easily read the file BufferedReader br = new BufferedReader(new FileReader("C:\\ProjectFolderName\\files\\BB.key")); but i don't want to write the full path instead i just want to give the folder name which contains the file, like bellow. BufferedReader br = new BufferedReader(new FileReader("\\files\\BB.key")); How to do this? String currentDirectory = new File("").getAbsolutePath(); System.out.println

问题 I have 100 millions of records in JSON file, need an efficient and fastest method to read the array of arrays from a JSON file in java . JSON file look like: [["XYZ",...,"ABC"],["XYZ",...,"ABC"],["XYZ",...,"ABC"],...,["XYZ",...,"ABC"], ["XYZ",...,"ABC"],["XYZ",...,"ABC"],["XYZ",...,"ABC"],...,["XYZ",...,"ABC"], ... ... ... ,["XYZ",...,"ABC"],["XYZ",...,"ABC"],["XYZ",...,"ABC"]] I want to read this JSON file line by line as: read first: ["XYZ",...,"ABC"] then: ["XYZ",...,"ABC"] so on:' ... ...

问题 I currently have a program that reads file (very huge) in single threaded mode and creates search index but it takes too long to index in single threaded environment. Now I am trying to make it work in multithreaded mode but not sure the best way to achieve that. My main program creates a buffered reader and passes the instance to thread and the thread uses the buffered reader instance to read the files. I don't think this works as expected rather each thread is reading the same line again

问题 I am using BufferedReader.readLine() method to read a response from a remote server (which is written in C and I have no access to source code). BufferedReader br = new BufferedReader(new InputStreamReader(in)); String line; while((line = br.readLine())!=null){ [...] } But it always blocks at the last line until it times out. So I used the following code: int b; while(true){ b = in.read; [...] } and I found out that the last byte read has an integer value of 13, which I think it is a carriage

问题 I need some help: I'm making a Supermarket simulation on Java, but I've got one problem, I have a text file (Stock.txt) where I have all the supermarket stock on it for example: 0-Bakery-Chocolate Cake-$12.5-250 1-Meat-Premium Steak-$2.6-120 2-Seafood-Tuna - $1.2-14 ... Where the first number is the "id" for the product, next is the department the product belongs, third is the name of the product, the next thing is the price, and the last number is how much pieces of the product the stock has

问题 I'm trying to read in a text file of a bunch of words that I want to use for a word game I am writing. This list is stored in the assets directory and is a txt file. But, whenever I attempt to open it, it throws an exception. List<String>wordList = new ArrayList<String>(); BufferedReader br = null; try { br = new BufferedReader(new InputStreamReader(getAssets().open("wordlist.txt"))); //throwing a FileNotFoundException? String word; while((word=br.readLine()) != null) wordList.add(word); /

问题 I want to prompt the user to begin entering characters and I want them to be able to enter characters as long as they want until they hit control+d to exit. For example, they can type a string of numbers like: 1234567 and as soon as they decide to hit control+d the line that they entered will be displayed (so without having to hit return) I am thinking I'll need a buffered reader or something. Any suggestions? 回答1: What rlibby said is spot on: the CTL-D will cause the terminal to flush

问题 This may sound very easy or an old stupid question, but it is quite different for me. I have written a Program for a half-Descending pyramid Pattern which is like this. 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 I know this is very easy, the trick is I don't wanna do this by use of Scanner and Integer.parseInt() . I am trying to do this with BufferedReader and InputStreamReader . So when I execute the following code of my main method with a input of 5 in num. It reads it as 53 when I print it. I have no