Does it make sense to always wrap an InputStream as BufferedInputStream, when I know whether the given InputStream is something other than buffered? For e.g: InputStream is = API.getFromSomewhere() if(!(is instanceof BufferedInputStream)) return new BufferedInputStream(is); return is; ...
For example, I want to zip a file stored in /Users/me/Desktop/image.jpg I made this method: public static Boolean generateZipFile(ArrayList<String> sourcesFilenames, String destinationDir, String zipFilename){ // Create a buffer for reading the files byte[] buf = new byte[1024]; try { // VER SI HAY QUE CREAR EL ROOT PATH ...
Hello, i try to compile a java program but in the import section of the code fails: import java.net.*; import java.io.*; import java.util.*; import java.text.*; import java.awt.*; //import java.awt.image.*; import java.awt.event.*; //import java.awt.image.renderable.*; import javax.swing.*; import javax.swing.border.*; //import javax.sw...
Before when I use file in my fileWritter it worked, but now since I'm using getResourceAsStream instead of file how can I make it work? FileWriter fstream = new FileWriter(new File("filename"), true); Now when I pass InputStream is = getResourceAsStream("filename"); FileWriter fstream = new FileWriter(is, true); I had to change i...
Trying to read a binary data file in the assets directory of android app: void loadFile(InputStream filein){ log(filein.available()); // returns 11310099 int a = filein.read(); // returns -1 (i.e. EOF) } // Function was called using: loadFile(context.getAssets().open("filename.dat")); So if available() correctly returns that th...
What are the differences (if any) between the following two buffering approaches? Reader r1 = new BufferedReader(new InputStreamReader(in, "UTF-8"), bufferSize); Reader r2 = new InputStreamReader(new BufferedInputStream(in, bufferSize), "UTF-8"); ...
I have a Java program that creates a number of xml file and then zips them up and saves them to the file system. Later in the program I want to put that same zip file into a blob column of my oracle database. Problem is I'm not sure how to do that. I don't need to read it or do anything with the data, just move it to the database for p...
i use follows code to get page content: URL url=new URL("http://www.google.com.hk/intl/zh-CN/privacy.html"); BufferedReader reader = new BufferedReader(new InputStreamReader(url.openConnection().getInputStream())); for(String line=reader.readLine();line!=null;line=reader.readLine()){ System.out.println(line); } reader.close(); pag...
i has a BufferedImage instance: (only a example) BufferedImage image = ImageIO.read(new URL("http://www.google.com/intl/en_ALL/images/srpr/logo1w.png")); now,i only know use ImageIO.write(image,"jpg", file); //or ImageIO.write(image,"png", file); to save this BufferedImage to a file, but this file is ZIPed,not equal original image...
I am trying to load a text file from the src package. I don't want to load it as an input stream. I would like to load it as an FileReader. Looking at how netbeans loads icons, I tried using the code: getClass().getResourcesAsStream("/getresources/test.txt"); However, I can't find any way to convert an inputstream into a filereader. ...
It's perfectly described here how to do it, the only problem: He doesnt know the function openFileOutput(); private void saveSettingsFile() { String FILENAME = "settings"; String string = "hello world!"; FileOutputStream fos = openFileOutput(FILENAME, Context.MODE_PRIVATE); //openFileOutput underlined red ...
hi guys, I'm using PDF-Renderer to view PDF files within my java application. It's working perfectly for normal PDF files. However, i want the application to be able to display encrypted PDF files. The ecrypted file will be decrypted with CipherInputStream, but i do not want to save the decrypted data on disk. Am trying to figure a way...
I want to to detect whether a given program can perform malicious operations like forking , interprocess piping , input/output redirection, file handling etc. Actually I am developing a program that checks java codes and do not want the coder to harm my code checker system in any way. What are the packages I should look for in code to en...
The only way I know is to write a temp file, and read this file to create RandomAccessFile ,check it here or use Use Unified I/O library (http://uio.imagero.com) here Would this be the best way? Or can use temp file and the imageio library to implement it? ...
I am listening changes to a syslog file in Java. I use the accepted answer to process new entries to the file. However, I couldnt find an efficient solution for detecting rollover files. Syslog file might be rolledover daily or based on filesize. What are the best practises for handling such a case? ...
Hi, The good: so, I have this binary data file (size - exactly 640631 bytes), and I'm trying to make Java read it. I have two interchangeable classes implemented as layers for reading that data. One of them uses RandomAccessFile, which works great and all. The bad: Another one (the one this question is mostly about) tries to use Fil...
Hi, i'm not a java developer, but i need to write a small applet to upload file via ftp (actually, i'm a web developer). Everything works fine, except for the way that feedback messages are displayed. Let me explain with an example: if i wrote sometingh like that, inside a method (controlled by a click event) //.... myJpanel.setText("C...