bufferedwriter

I am trying to make a game with a working highscore mechanism and I am using java.io.BufferedWriter to write to a highscore file. I don't have an encryption on the highscore and I am using Slick2D and LWJGL for rendering and user input. The program executes this code: FileWriter fstream = new FileWriter("res/gabjaphou.txt"); BufferedWriter writer = new BufferedWriter(fstream); writer.write(score); // score is an int value writer.close(); // gotta save m'resources! lol I open the text file generated by this and all it reads is a question mark. I don't know why this happens, and I used other

This question already has an answer here: What is a stack trace, and how can I use it to debug my application errors? 7 answers How do I declare and initialize an array in Java? 24 answers I'm using an array of String[3] to store user input which is got from 4 JTextFields I then output the array to a txt file: String[] userInfo = new String[3]; userInfo[0] = sourceTextField.getText(); userInfo[1] = usernameTextField.getText(); userInfo[2] = passwordTextField.getText(); userInfo[3] = emailTextField.getText(); for (String userInfo1 : userInfo) { try { BufferedWriter writer = new BufferedWriter

Here is the code snippet. read = new FileReader("trainfiles/"+filenames[i]); br = new BufferedReader(read); while((lines = br.readLine())!=null){ st = new StringTokenizer(lines); while(st.hasMoreTokens()){ bw = new BufferedWriter(new FileWriter("files/file.txt")); bw.write(st.nextToken()); bw.newLine(); } } Edit: I am reading files from a directory. So, I need to open the reader in every loop. I have made some modification, but then also it is not writing to that file. Here is the code: for(i=0;i==0;i++){ if(filenames[i].matches(".*ham.*")){ System.out.println("ham:"+filenames[i]); read = new

This question already has an answer here: BufferedWriter not writing everything to its output file 8 answers I am doing a lab where we have to read in an external file, take some statistics on the data, and then create and write a new file with the stats. Everything in my program works except for writing the file, which I cannot understand why my method won't work. BufferedWriter writer; public void writeStats(int word, int numSent, int shortest, int longest, int average) { try { File file = new File("jefferson_stats.txt"); file.createNewFile(); writer = new BufferedWriter(new FileWriter(file)

I know that the PrintWriter is really good if we want to write formatted data, and I also know the use of BufferedWriter to improve IO performance. But I tried something like this, PrintWriter pw = new PrintWriter(System.out); pw.println("Statement 1"); pw.println("Statement 2"); //pw.flush(); I observed that when the flush method is commented there is no output, but when I uncomment it, I get the desired output. This is only possible if the PrintWriter is buffered. If so, then what is the point of wrapping a PrintWriter using a BufferedWriter and then writing it? Though the javadoc doesn't

This question already has an answer here: Correct way to close nested streams and writers in Java [duplicate] 10 answers Consider a BufferedReader as below: writer = new BufferedWriter(new FileWriter(new File("File.txt"), true)); In this case at the end of the application, I am closing the writer with writer.close() Will this be enough? Won't that FileWriter created with new FileWriter(new File("File.txt"), true) need to be closed? It is not necessary to close it, because BufferedWriter takes care of closing the writer it wraps. To convince you, this is the source code of the close method of

I have the following code: CSVmaker(LinkedList data) { String [] myLines = makeStrings(data); // for (int k = 0; k<myLines.length; k++) // System.out.println(myLines[]); this.file = new File("rawdata.csv"); try { BufferedWriter buff = new BufferedWriter(new FileWriter(file)); for (int i = 0; i<myLines.length; i++){ buff.write(myLines[i]); buff.newLine(); System.out.println("done"); } } catch (IOException ex) { System.out.println("except"); } } No, I checked for the contents of myLines, these are correct. Also, I get the print which prints "done" just as often as I should. The csv is created.