Search DaniWeb - printstream

PrintStream Overwrite Problem 14 Years Ago by Cheese Man 808 … format of each line. I understand the problem with the PrintStream overwriting the file each time, but I'm not sure… static void writeFileOutput(String fileOutputArg, StringBuilder translationText) throws Exception { PrintStream out = new PrintStream(new FileOutputStream(fileOutputArg,true)); //Append true System.out.println… Re: PrintStream Overwrite Problem 14 Years Ago by quuba Each time is created a new instance of PrintStream out -line 129 You need create this instance only once (without this method, and put it as an additional method parameter). PrintStream Append to file 14 Years Ago by Effrego I'm using PrintStream, to put some text in a txt. But how do I append to the end of the file? I saw some code whilst google-ing and it had other inputbufferstream stuff in it. Does PrintStream have its own append option? StringBuffer and PrintStream 16 Years Ago by new_2_java …behaviour? how can I write multiple lines to printStream, using StringBuffer Here's what I mean: […} da.closeConnection (); System.exit(STATUS); } } private void writeToLog (PrintStream logFile, String fileName, StringBuffer buffer) { try { out = new … Re: StringBuffer and PrintStream 16 Years Ago by new_2_java … works fine. It writes to to next line [code=java] PrintStream.println("First line\nThis should go to second line…;); sb.append("this should go to second line"); PrintStream.println(sb.toString()); [/code] I am not sure if it… Re: StringBuffer and PrintStream 16 Years Ago by Ezzaral …); sb.append("this should go to second line"); PrintStream.println(sb.toString());[/code] Re: Java PrintStream significance and where to use this? 11 Years Ago by jalpesh_007 …very advanced ways, using a formatting string. The PrintStream has a wide selection of contructors that enable …to a File, or an OutputStream. or The PrintStream class is obtained from the FilterOutputstream class that …data values conveniently. Unlike other output streams, a PrintStream never throws an IOException and the data is flushed… Java PrintStream significance and where to use this? 11 Years Ago by sash_kp I found many programmers using PrintStream in their codes. I looked for this,but failed to …,Why to use it? "Unlike other output streams, a PrintStream never throws an IOException and the data is flushed to… what's the benefit if flush is automatically invoked? private PrintStream x = null; Now what could be the possible reasons if… Regarding PrintStream class 16 Years Ago by srs_grp … int len=b.length; b1=b1.wrap(b); FileOutputStream out; PrintStream p; try { out = new FileOutputStream("c:\\MyLogFile.log&…quot;) p = new PrintStream( out ); for (int i=0;i<len;i++ ) … Re: Diff b/w DataOutputStream and PrintStream 12 Years Ago by hajjanmu … will write numeric data in a binary format, while the PrintStream will provide a human readable form. The methods of a… DataOutputStream will throw exceptions, while for the PrintStream I/O errors are treated internally and can only be… Diff b/w DataOutputStream and PrintStream 14 Years Ago by daudiam Both DataOutputStream and PrintStream do basically the same thing - convert primitive types and Strings to bytes before writing them (writeUTF() is an exception). Why different classes ? Re: Diff b/w DataOutputStream and PrintStream 14 Years Ago by JamesCherrill DataOutputStream outputs data in its raw binary form - eg always 4 bytes for an int PrintStream outputs data in a human-readable character format - so an int could be anything such as "0" or "-1234567" Re: Diff b/w DataOutputStream and PrintStream 14 Years Ago by daudiam Thanks. Does that mean that if we write the integer 2 using DataOutputStream, it'll write 0x0002, whereas if we use PrintStream, it'll convert it into the unicode code 0x32 and then use the UTF-8 or whatever is the default encoding of the platform to write that to the file ? Am i right ? Re: PrintStream Overwrite Problem 14 Years Ago by kramerd When you use System.out, you are using println, which prints the string and then a new line. But when you use out to print to the file, you are only using out.print (line 131). Change this to out.println to get each line of text on a new line. Re: PrintStream Overwrite Problem 14 Years Ago by Cheese Man 808 [QUOTE=kramerd;1362832]When you use System.out, you are using println, which prints the string and then a new line. But when you use out to print to the file, you are only using out.print (line 131). Change this to out.println to get each line of text on a new line.[/QUOTE] Thanks! I just figured that out a second before I found your post. … Re: PrintStream Append to file 14 Years Ago by mKorbel sure, why not [url]http://www.java2s.com/Code/Java/File-Input-Output/Appendstringtoatextfile.htm[/url] Re: PrintStream Append to file 14 Years Ago by Effrego Thanks :D Re: PrintStream Append to file 14 Years Ago by masijade [QUOTE=Effrego;1532647]Thanks :D[/QUOTE] I'm sorry, but why did you not just check the API docs? Re: StringBuffer and PrintStream 16 Years Ago by Ezzaral Not really sure why you are getting that behavior. Your writeToLog() code wrote a StringBuffer with newline characters in it to multiple lines just fine here in a tiny test program. Are you viewing the file with an editor that's okay with just linefeeds or does it expect carriage return and linefeed pairs? Re: StringBuffer and PrintStream 16 Years Ago by new_2_java Thanks, that did the trick. Appreciate your help. Re: StringBuffer and PrintStream 15 Years Ago by svdurgarao [QUOTE=new_2_java;635156]Thanks, that did the trick. Appreciate your help.[/QUOTE] Thanks for your supprt, its really helped me to format my output string Re: StringBuffer and PrintStream 15 Years Ago by kvprajapati I'm glad you got it helpful. If you want to ask question, start your own thread. Thread Closed. Re: Regarding PrintStream class 16 Years Ago by stultuske a solution would be to look into the classes used to write and search for append. an other, if you want to keep most of your code, is to (before you write) read the existing data, put that data and your new data in one big char array, and write that one, but I would suggest the first option Re: Regarding PrintStream class 16 Years Ago by ~s.o.s~ Why would you want to dump a byte array in a log file? Anyways, use a FileWriter in append mode and if it is *really* required, write out the byte array as a string [by looping over individual bytes and converting them to their String representation; use a StringBuilder]. Re: Diff b/w DataOutputStream and PrintStream 14 Years Ago by JamesCherrill Yes (except that ints in Java are 4 bytes, 0x00000002) Re: Diff b/w DataOutputStream and PrintStream 14 Years Ago by daudiam Thanks. Re: Diff b/w DataOutputStream and PrintStream 12 Years Ago by JamesCherrill Hello hajjanmu Welcome to Daniweb. I guess you did notice that this thread was marked "solved" 2 years ago? printing to a text file 13 Years Ago by applejax77 … FileOutputStream ps = new FileOutputStream("myfile.txt", true); new PrintStream(ps).print ("" + fnameTF.getText() + " " + … ("myfile.txt"); // Print a line of text new PrintStream(fout).print ("" + fnameTF.getText() + " " + … printing to a text file 13 Years Ago by applejax77 … FileOutputStream ps = new FileOutputStream("myfile.txt", true); new PrintStream(ps).print ("" + fnameTF.getText() + " " + … ("myfile.txt"); // Print a line of text new PrintStream(fout).print ("" + fnameTF.getText() + " " + … Can't Get the right Output after Troubleshoot 12 Years Ago by jg1405 … //import java.io.FileNotFoundException; //import java.io.PrintStream; import java.util.Scanner; public class MyDate {…. //Written By: //***************************************************************** //import java.io.PrintStream; import java.util.Scanner; public class MyTime …