Just a quick one here.
What are the benefits of using java.io.Console as opposed to using a BufferedReader wrapping an InputStreamReader for System.in?
Why would I use it?
Thanks for any advice!
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What exactly is the technical difference between console.writeline and System.out.println?
I know that system.out.println writes to standard output but is this not the same thing as the console?
The manual for ... |
How to read single character from console in java...??
can it done without BufferedReader..?
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here the code found in this forum and i need to stored the 10 recent files into another foldre, i tried to modify but it's not working as well as i ... |
I would like to make use of java.io.Console. I am trying to do so by invoking System.console(). This works..some of the time.
This is fine when I run ... |
I have a console based (System.in and System.out based) Java standalone application. I am trying to convert it into an applet. But the problem is that there is no console in ... |
I would like to write a character to the same location in a console window.
The characters I would like to write are / - \ _. This will get me ... |
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the new http://download.oracle.com/javase/6/docs/api/java/io/Console.html class seems ok for user input from the console, however, it seems to provide no way to read a line but with the default already filed ... |
Most examples out there on the web for inputting a file in Java refer to a fixed path:
File file = new File("myfile.txt");
What about a user input file from the console? ... |
Just what the title says - is it possible to echo the response contents without having to store the file?
I would also settle for being able to throw out the results, ... |
I use the following lines to redirect my console output to a file :
PrintStream stream = new PrintStream("console.log");
System.setOut(stream);
Now the file is overwritten with every start of the ... |
How can I configure IntelliJ to capture the standard output of the application to a file, but still display it in the standard console window?
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Hello, In a console application how can we hide password when it is entered on screen. I mean if I am accepting password from the Terminal. I know that I can do this using AWT setEchoChar method but this only works with Windows application. Do we have any other method for this ? Regards, Girish |
hi, i am extecting following command in my java program: Process pr = rt.exec("java com.sun.xslt.runtime.DefaultRun d:/xsltc/samples/test1.xml xsl1"); now the command with in exec() gives console output when run on dos -comman prompt. i want to see the same output within my JBuilder output windowd when i am using exec(); any solution for that ?? tx AA |
assuming that you want to read input from the dos prompt. You can use the BufferedReader class in java.io Here is a small peace of code which may help. This is to read one line from the input. BufferedReader br = new BuferedReader(new InputStreamReader (System.in)); System.out.println("Enter name"); String name=br.readLine(); This may help Thanks |
Most of the programs I have seen, which require user input, read it from the command line. What is the method equivalent to C++'s cin or scanf(), so that user can interactively input values in a console Java program? Is this method too tedious to implement that most programs resort to command line? ------------------ Manish. |
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Im writing a comsole application that takes input. However the System.in.read() and its kind requires an ENTER to send the characters to my program. I want a way to get the input characters in an interactive way that doesn't need an enter to get the input of the user. Somehow similar to getche() in C programs. any help will be appreciated. ... |
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Hi, I am writing a script that polls a data source and just prints some status information from it to the console. Over time the data in the data source will change and I want to update the console accordingly. Updates will be every 10 secs or so. However, I don't want to just keep printing the info with System.out.println as ... |
Hi, Below is a snipet of code from a class I have made for data entry where the console retrieves the data from the keyboard using the readKB() method and stores it in a text file. I have another class called Fines that has the same variables and also does some calculation on these variables. What I want to be able ... |
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Hi, I have the following part of a class. In the method writeToFile I am trying to set the data entered from the keyboard to another class holding the set methods for the data. I am then trying to call the calculate method from another class which uses the int nNumberOfDays and double fFineRate to calculate another double totalFine. Then I ... |
KeyListener only works if you have a GUI component which has focus. Since Java is cross-platform and some of those platforms may not have consoles (or keyboards for that matter, JavaPhone anyone?) the console capabilities are pretty weak. You can read a single character with InputStream.read(), but you still have to hit "enter" on the end of the line on the ... |
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Hi guys, Can some please answer these questions. 1. If someone gives me a serialized object in a file. Can i show its complete understandable graph on console, something in Tree form (just static one) 2. Does it required to have those Object class or object related classes in the classpath of the Utility which is about to show its graph ... |
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THE PROBLEM: i have an IDE (eg say MYECLIPSE or NETBEANS) when we execute a class then the console of the IDE open ups and output of the class appears in IDE's console. so is it possible to get that string (i-e the output) in some file or you may say capture the output. if yess than how??? please do tell ... |
Hi, I'm trying to run dot net console application via Java : process = Runtime.getRuntime().exec(commandLine); I get the following output: Detecting The handle is invalid. when running it directly via the console (windows) there is no problem: Detecting 100% Done. 100% I'm running more applications in this form but have no problem . Do you have any idea ? (please note ... |
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When i run this, console is waiting for me to insert some data. If i insert more chars, it ok. I get first two chars on the screen (cause of System.out). But, when i insert only one character, why program just write that one and that's all. Doesn't it have to prompt for the second character? As i understand i insert ... |
hello, i was wondering what is the best way to direct all calls on system.out to a file, but still also show the output in the console ... i came up with the following code, but it looks somehow cumbersome, since you would have to overwrite all implemented mehtods class MultiPrintStream extends PrintStream { private PrintStream[] streams; public MultiPrintStream (PrintStream... streams} ... |
Hello guys. I know that Scanner exists but a professor at my university doesnt know that. He knows java 1.4 and believes that Scanner doesnt exist. By the way in his book he has written a class to do the job. Is it poor that he parses always the string to a double ?And then he casts the double to long ... |
Hi all! I am trying to read input from the console, and write it to a file. I The thought was that the user terminates the program by simply not typing any text, just hitting enter.. I was thinking a do-/while loop could do the trick.. Anyway, here's what I got so far: System.out.println("Text to be written to file: "); Scanner ... |
The Java console meaning JConsole, or meaning the OS console window (CMD.EXE) ? If it's the latter, the answer varies by OS, of course, but generally there's a way of cutting and pasting out of that window and into a file. For example, in Windows, if you enable "Smart Edit" in the Properties tab for your consoles, then you can rightclick-drag ... |
42. Console coderanch.comHi All Im trying to run the following code from SCJP Sun Certified Programmer for Java 6 Sierra book but i get NullPointer Exception at line 7(pw=c.rearPassword...) this is the code: package scjp; import java.io.Console; public class ConsoleTest2 { public static void main(String[] args) { Console c = System.console(); // #1: get a Console char[] pw; pw = c.readPassword("%s", "pw: "); ... |
If you debug your code, you will find that you are not getting a Console object, hence c is null. According to the API doc for java.io.Console class. Whether a virtual machine has a console is dependent upon the underlying platform and also upon the manner in which the virtual machine is invoked. If the virtual machine is started from an ... |
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Yeah , this is the code which I was talking about it import java.io.FileInputStream; import java.io.FileNotFoundException; import java.util.Scanner; public class Main { public static void main(String[] args) throws FileNotFoundException { System.setIn(new FileInputStream("D:/Java/test.txt")); Scanner keyboard = new Scanner(System.in); String filePass, inputPass; filePass = keyboard.nextLine(); System.out.println("Enter Your Password:"); //Second scanner is suppose to get value from console inputPass = keyboard.nextLine(); if (inputPass.equals(filePass)) { ... |
Hi everyone, This seems really simple but I am not able to think of a viable solution. I'm trying to have a user enter numbers and throw them in an array. Next, if they give me something like 2-4 I want to print "2, 3, 4." For this, should I make the array an arraylist to begin with so I can ... |
import java.io.Console; public class NewConsole { public static void main(String[] args) { String name; Console c = System.console(); // #1: get a Console char[] pw; pw = c.readPassword("%s", "pw: "); // #2: return a char[] for(char ch: pw) c.format("%c ", ch); // #3: format output c.format("\n"); MyUtility mu = new MyUtility(); while(true) { name = c.readLine("%s", "input?: "); // #4: return ... |
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Problem Solved guys =] Thanks Hey guys, due some peoples with problem running my program, i decided make a system to get logs of console errors and send to me so i know whats happening. I need know how i could grab to like a String the console outputs. I know that i can take from Process but idk how get ... |
I don't see anything in the obvious place (Window, Preferences, Run/Debug, Console). But what's the point? RAD is just a development environment. I don't think you should replace all your System.out statements by writing to a file either. I think you should replace them all by calls to a logging system like log4j. In the interim there's the System.setOut and System.setErr ... |
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Hi, I m newbie to this forum. I have query regarding how to read the informational data from the console and write it to the file. for e.x. C:\> ant go Build Started. [java] some info to user [java] some info to user build Finished. The above example saying that after running the command (ant) the build process will start and ... |
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Hi, I have written a program that outputs numerical results to the console in java(using eclipse). The problem that i have is that i want to copy or save the entire console content to a .txt file. How could i do this please? Thank you for your help Edited by: puk284 on Apr 30, 2009 5:27 AM |
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Hi, I am using client.executeCommand(command, globalOptions); it is giving history of the file in the console. Return type of executeCommand is boolean. I am importing import org.netbeans.lib.cvsclient.Client; and there is no Client.java.class it is jar file. Now i want to store console information in the local file Any solution. Thanks and regards Ruchira |
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Hello forum. I've searched the forums and Google but can't figure out the straight answer. Or maybe I just don't like the answer I have. I have a user out in the field who is having an error in an applet based application running under 1.3. I can not duplicate the error. The user can not send me the contents of ... |
IMO, java.io.Console should have been an interface. As it can't be instantiated directly, it might still be possible to change it to one. If not, it should implement one that has all its methods. The advantage would be that you could create all sorts of different Consoles: a serial port, a Telnet NVT, etc. All of which could be interchangeable with ... |