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This article mainly introduces java how to achieve simple document reading and writing, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Simple reading and writing of files

Package com.file;import java.io.*;/** * Created by elijahliu on 2017-2-11. * / public class ReadFile {public static void main (String [] args) {File file = new File ("new Hello.txt"); if (file.exists ()) {System.err.print ("exsit") Try (FileInputStream fis = new FileInputStream (file)) {/ / File input stream this is a byte stream InputStreamReader isr = new InputStreamReader (fis, "UTF-8"); / / inputstreamReader is a byte stream. When you convert a byte stream to a character stream, you need to develop an encoding method, otherwise it will garbled BufferedReader br = new BufferedReader (isr); / / character buffer String line While ((line = br.readLine ())! = null) {/ / here print System.out.println (line) if the contents of the buffer are not empty;} br.close (); / / finally close each thread isr.close (); fis.close ();} catch (FileNotFoundException e) {e.printStackTrace () } catch (IOException e) {e.printStackTrace ();}} File newfile = new File ("newtext.txt"); try {FileOutputStream fos = new FileOutputStream (newfile); / / here the file OutputStreamWriter osw = new OutputStreamWriter (fos, "UTF-8") is automatically created if the file does not exist; / / as with the read, here is the converted byte and character stream BufferedWriter bw = new BufferedWriter (osw) / / here is the write buffer bw.write ("awesome my brother"); / / write the string bw.close (); / / open here and then close osw.close (); fos.close (); System.out.println ("done");} catch (FileNotFoundException e) {e.printStackTrace () } catch (UnsupportedEncodingException e) {e.printStackTrace ();} catch (IOException e) {e.printStackTrace ();} Thank you for reading this article carefully. I hope the article "how to read and write documents in java" shared by the editor will be helpful to you. At the same time, I hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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