filereader example

Import java.io.*; public class Filereadersample {public static void main (String args[]) throws IOException {//Create an array that can hold 1024 characters Char Data[]=new char[1024]; Establish object Fr FileReader fr=new filereader ("C://java//donkey.txt"); Read the data into the character list, int num=fr.read (data); Converts a list of characters to a string Str=new string (data,0,num); Outp

File, fileinputstream, filereader, inputstreamreader, bufferedreader... References: L Chapter 12 of core Java L detailed description of how to operate text files using Java Http://java.ccidnet.com/art/3737/20041108/523627_1.html L what is filereader class? What is the difference with fileinputstream ??? Http://book.hackbase.com/ask2/ask107572.htmOrganize and comprehend by yourself:Introduction:C language on

() causes the byte to be read from the file and converted to a character to return, which is extremely inefficient. You can use BufferedReader to specify the size of the buffer, or you can use the default size. In most cases, the default value is large enough. Therefore, it is recommended to use BufferedReader to wrap all Reader (such as FileReader and InputStreamReader) whose read () operation may be expensive. For

Use and difference of fileinputstream, filereader, inputstreamreader file, fileinputstream, filereader, inputstreamreader, and bufferedreaderReferences:Chapter 12 of core JavaDetailed description of http://java.ccidnet.com/art/3737/20041108/523627_1.html using Java to operate text filesWhat is filereader class? What is the difference with fileinputstream ???Http:

InputStreamReader when you want to specify the encoding methodclass, while the parameters and FileInputStream of the FileReader constructorAs a file object or a string representing path, you can see that the filereader is used when you want to read a document according to the files object or string;I think the role of FileReader sub-category is the small divisio

to specify the encoding methodclass, while the parameters and FileInputStream of the FileReader constructorAs a file object or a string representing path, you can see that the filereader is used when you want to read a document according to the files object or string;I think the role of FileReader sub-category is the small division of labor.Two relations and dif

data.Previewing a picture file using the FileReader methodIn the previous instance, the Blob interface allows access to file data blocks for file-related information. However, if you want to read the file, you also need to read the data into memory or page through the method in the FileReader interface, for example, the small size picture file, you can get the f

");e.printStackTrace();}System.out.println ();// 例2 – Java中使用FileReader 读取文件数据try (FileReader reader = new FileReader("c:/data.txt")) {int character = reader.read();while (character != -1) {System.out.print (integer.tohexstring (character));System.out.print((char) character);character = reader.read();}} catch (IOException io) {System.out.println("Failed to read c

Transferred from: Http://hi.baidu.com/danghj/item/0ef2e2c4ab95af7489ad9e39Resources:L "Core Java" chapter 12L How to manipulate text files using Java http://java.ccidnet.com/art/3737/20041108/523627_1.htmlWhat kind of FileReader is L? What's the difference with FileInputStream? Http://book.hackbase.com/ask2/ask107572.htmSelf-collation and understanding:Introduction:C language only needs a file*, and unlike C, Java has a series of flow types, the numb

Differences between fileinputstream and filereader Core tips: 1) File class introduction File class encapsulates the function of operating the file system on the user's machine. For example, you can use the File class to obtain the last modification time, move the object, or delete or rename the object. In other words, the stream class focuses on the file content, while the file class focuses on the main

Successfully read Onloadend Read complete regardless of successful failure 3, the use of FileReader interfaceDetermine if the browser supports the FileReader interface if (typeof FileReader = = ' undefined ') { result. Innerhtml= "function Readasdataurl () { //Check whether the image file is var, filename = doc

File, [encoding] Read a file as text ReadAsText:The method has two parameters, the second is the text encoding method, the default value is UTF-8. This method is very easy to understand. It reads the file as text, and the read result is the content in the text file.ReadAsBinaryString:This method reads a file as a binary string, which is usually transmitted to the backend. the backend can store the file through this string.ReadAsDataURL:This is the method used in the

as Dataurl Readastext file, [encoding] reads files as text Readastext: The method has two parameters, where the second parameter is the encoding of the text, and the default value is UTF-8. This method is very easy to understand, the file is read in text mode, the result of reading is the content of this text file.readasbinarystring: This method reads a file as a binary string, usually we pass it to the back end, and the backend can store the file through this string.Readasdataurl: Thi

Dataurlreadast ext file, [encoding] reads the file as text Readastext: The method has two parameters, where the second parameter is the encoding of the text, and the default value is UTF-8. This method is very easy to understand, the file is read in text mode, the result of reading is the content of this text file. Readasbinarystring: This method reads a file as a binary string, usually we pass it to the back end, and the backend can store the file through this string. Readasdataurl: This is th

not support mark (), or some other I/O error occursResetpublic void Reset ()Throws IOExceptionResets the stream. If the stream is marked, try repositioning the stream at that mark. If the stream is marked, an attempt is made to reset the stream in a way that is appropriate for a particular stream, for example, by repositioning the stream to its starting point. Not all character input streams support the reset () operation, and some support reset () a

Abort None Interrupt Read Readasbinarystring File To read a file as a binary code Readasdataurl File Read the file as Dataurl Readastext file, [encoding] To read a file as text Readastext: The method has two parameters, where the second parameter is the encoding of the text, and the default value is UTF-8. This method is very easy to understand, the file is read in text mode, t

. JavaScript In this example, we use the input form field to upload an image. When you select an image on your computer, the image will be displayed on the page: Document. getElementById ('upload-file '). addEventListener ('change', function () {var file; var destination = document. getElementById ('destination'); destination. innerHTML = ''; // loop the multiple objects selected by the user for (var x = 0, xlen = this. files. length; x In this

This article refers to: http://blog.csdn.net/jackfrued/article/details/8967667One: FileReaderFileReader is an important member of the API to read the file, the FileReader interface provides a way to read the file and an event model containing the results of the read event;Two: The method of FileReader eventThe FileReader instance has 4 methods, 3 of which are use

Dataurlreadast ext file, [encoding] reads the file as text Readastext: The method has two parameters, where the second parameter is the encoding of the text, and the default value is UTF-8. This method is very easy to understand, the file is read in text mode, the result of reading is the content of this text file. Readasbinarystring: This method reads a file as a binary string, usually we pass it to the back end, and the backend can store the file through this string. Readasdataurl: This is th

FileOutputStream corresponds to FileWriter: Converts a stream of bytes into character streams, where data written to OUT1 is automatically converted to characters by Byte. See more highlights of this column: Http://www.bianceng.cnhttp://www.bianceng.cn/Programming/Java/FileWriter out1 = new FileWriter (file); Writes 10 Kanji out1.write ("Byte flow is example of character stream"); Write to "0123456789" + newline character