what i want to do is this :i want a console to wait for my commandand on a key pressed to check the key and call the relevent functionat the same time i want a certain function to happen every 10 minutes for exaple|!is this possible?thanks in advancepeleg ...

Hi guys,somebody know why and how I can work out the following problem? The below FIRST small program works, but the problem is that I need to uso the components vectors and their variables many times in different parts of a big program, and they are more complex objects. I need to be able to ...

Hi, has anyone in this forum ever used Weka, the data mining software ? I really hope someone has. I just realized that when reading an .arff file (the .arff is jsut the format of the input files required by weka), there is no way I can specify the encoding of the file for weka. Even if I make ...

I made a console-based program ( System.out, System.in ) how can I change the console? ( most users do not enable the console in the prefs )

I have a superclass Accountand two seperate subclasses Savings and CreditBoth Savings and Credits extends Account In my main i have an object like this:<code>CreditAccount customer1 = new CreditAccount();SavingAccount customer2 = new SavingAccount();</code>I was just wondering how ...

Hi,Any method available to insert a character at a specific position in a string?example: st = "abde"< Original string st= "abCde"< Add "C" in position 2

I have created an application which generates a report by getting the data from our archived files (.zip file).By the time, the application is reaching a file with size more than 100 mb, it is running out fo memory while creating the object of that particular file. Can some one help me by ...

Im very sorry if all this sounds confusing but there are several questions i have to know the answer toI have been working the past hour or two on a chat program. When a client connects ot the server the client sends an object over a stream that contains the value of the client's username and ...

Help!I am confused. So many Writers!I wonder if someone can recommend an elegant solution.I am writing some utility classes that write to output. This output could conceivable bea) a web page (thru JspWriter)b) a file (thru FileWriter I guess)and it needs to be able to write to either of ...

How does the implicit SSL and explicit SSL work in ftp?I have to know in detail.

hello,does anybody know where can be find the source code(implementation) of the doubleToLongBits(double) method?thank you.

Hello, I have written a very basic JApplet program. The output is supposed to be 4 JPanels in a Grid layout, with 4 buttons within each of the 4 JPanels. I believe I have achieved that output, but am not 100% sure, as I am just learning about Layout Managers and the JPanel class. If anyone ...

I guess I'm one of those rookies..I'm trying to set up a mouse listener to my Panel. I'm using lots of labels on that panel, but when I click on one of those labels, the program doesn't seem to react. I don't really like to use separate listeners to every label, coz their are too many and ...

Hi,I just want to ask how to make "c:\OS\example.java" to "c:\\OS\\example.java.Thank you..any sample code?

Is there a logo(soft copy) which Sun gives you after passing the java certification? I thought I saw a section somewhere which said something like that. If thats true, I would be appreciate it if someone could point me to where i can get it.Thanks.

There are tow objects named objA,objB.I want to swap them.How can I to write the function code to complete!public void swap(){}There is a resource:import java.io.*;public class TestSwap{private String str;public TestSwap(String str){this.str=str;}public void print(){System.out.println("This is ...

why can i not instansiate a global class object, then initialize it later in a member function?I keep getting null pointer exceptions everytime i do this.doesn't an instansiated class work as an address pointing to that object?I get this even if i pass it to the function as a reference. ...

Hello,I am trying to read the user's input in a text field and take the user to a match in a list box located underneath the textfield. To do that I have implemented the following code:m_pathwayNameTextField.addKeyListener(new KeyAdapter() {public void keyTyped(KeyEvent e) ...

I am using buffered reader coupled with inputstream reading from a socket.i use following code to read the message from the bufferedreader. char[] buff = new char[msgLength]; is.read(buff, 0, msgLength);it works in most of the cases , but fails when being used with firewall which divides the ...

I have several questions:1. Consider two java programs, one use package by import packages. Another is just put all classes and files in one folder. What are the differences in terms of the compilation process, compilation time, execution speed, class file size, and memory usage at runtime?2. ...

I wonder if there are any thoughts on the following technique. I have a real distaste for anonymous classes; while I understand the convenience, nothing can blow up a nice compact method like a bunch of braces. So I have come up with the following:public class Utility{public static ...

Hi,I have taken my SCJP ceritification, Iam thinking of taking the next level certification can someone suggest me in this regard. which one could be better, I have three options webcomponent developerarchitectIBM UML ceriticationpls help. u will get dukes too :)regards,saravana ...

Morning all, I need some urgent help on a reflection situation i have. here's the setup: I have a "container" that has the ability to load modules or module groups these are typically jpanels thatperform some or other database processing. My problem is this: I need these modules ( they are ...

I am getting the following message: java.lang.NoSuchMethodError: Move.<init>(LPosition;)Vat PartialMove.convertPartialToFullMove(PartialMove.java:250)at MoveGenerator.buildMoveList(MoveGenerator.java:117)Even though at line 250 I have : Move m = new Move(dp); and the move constructor is : ...

Hi,What is the correct cast sequence for this.Short s;Integer i = 8;s = (short)(int) i;This works, but seems somewhat ackward. Any better?-- Kasper

Ok i posted some of the same stuff earlier for a different problem. I just realized that not all my clients are recieving the same information. I have implemented some output statements to show the information being sent from the server to the client and such. The server does send data to all ...

Sorry if I write again...but I'm in trouble.Well I have some info I have to pass from frame to frame; someone some days ago suggested me to use a class (eg. Vector) to keep these info. Ok, but how can I? I use RMI. Client calls login function that retrieves from DB infos and returns a User ...

i want to create a file using java that contains a timstamp for examplebookmark020704.csvso it is like "bookmarks" + date and time + ".csv"any suggestions on how to do this? as what i am doing at the moment isnt workingtry {Calendar calendar = ...

how do i get the current time and date?

I have a table of values stored similar to this, BaseNumber NameUniqueNumbernull Parent 11Child21OtherChild32grandchild4In the above table a 'null' value in BaseNumber signifies that an entry has no 'parent'. 'Child' has a BaseNumber of '1', meaning that it is the child of the entity ...

Why is Boolean's hashCode method defined as returing 1231 (true) and 1237 (false) ?Are these values arbitrary, or is there deeper magic behind it ?Dave.

I have a table of values stored similar to this,BaseNumber NameUniqueNumber nullParent11Child21OtherChild32grandchild4 In the above table a 'null' value in BaseNumber signifies that an entry has no 'parent'. 'Child' has a BaseNumber of '1', meaning that it is the child of the entity ...

Sorry, I am only new to java, and am having some troubles.Here is the probem i need a solution to:I need to read a sentence from keyboard entry, i've done that, i need to convert all non-letters to a space, i've done that. The next part is the part im struggling with:I have to read each word ...

i want on every exception that occures to write a Log file how do i do that?thnaks in advancepeleg

I define an array and assign value to it , and I want to appent it , how can I do it with all element remained there unchanged ? such as , and I want to the 3rd element to it ! int intArr [] = {1,2} ;

When using getSource() is it better to use equals() or ==. I did it both ways and they both worked. I learned that I am suppose to use equals() with Objects and since getSource() returns an Object, I would think that I would use equals(), but, every example that I have seen uses ==.public void ...

Hi,Is it possible to convert empty value to Integer object?Actually i had an xml element which is empty specified like <day\> and I want to store the value extracted from this as Integer object.I tried with Integer.valueOf(e.getchildText("day")) But is is giving NumberFormatException ...

Ihin my class I using Random instance, I notice that the random has strong inclination to choose the first numbers of its range. I'm not using any seed(and I dont know what it is) . how can I make it mare randomly?thanksD

HiI've explored some of the classes in java, I saw some combinations I dont understand. What is the use of return without a n element to be returned?ThanksS

Hi,Is it possible to run a Ant Task from a web interface. What I want a nice little web interface with some buttons on it like Run JavaDoc, Deploy, Compile, Unit Test etc and when a developer clicks on any of the buttons, performs ANT Task.Any ideas? Thanks

How to create a java gui map with the coordination? Grid layout? Or can just do with the JPanel?Thanks.

hello allI am a programming enthusiast and a lover of java. I would like suggestions on where i can download java tutorials on how to create my very own components(by extending Component) and also how to write events and event listeners. I would also like tutorials on java beans, and enterprise ...

I am developing one HTTP client software and saving response times.I use the following algorithm to get a specific file from HTTP server.(socket connection and URL stuff...)time1BufferedInputStream bis = new BufferedInputStream(url.openStream());time2while (( bis.read(buff,0,BUFFER)) != ...

Hi there I have the following code and it seems that the sql query isn't correct. when i try to display the data from the resultset it gives an invalid cursor state. i have checked the query by trying it in the access databse and it works fine. Can you please telle me where's the prob ...

(Sorry if this is the wrong forum, not sure where to put this...)I'm using the metrics module for NetBeans. It opens a class file and analyzes it, returning various software metrics (or complexity measures). However, I would like to be able to create a Java program that allows the user to ...

I need information over an Java/JSP open source Web-Enable collaborative Application runnable embedded in a Standard Web Browser such as Internet Explorer or Netscape Navigador that include some of this features: Instant Messaging with roster and groups management, file transfer, chat, ...

is it possible to make a program that checks to see what other programs are running on the computer (For Example: Microsoft Word)

We have a number of clients in the field that are making an HTTP request for data. The data is compressed with DeflaterOutputStream on the server and then inflated with InflaterInputStream on the client.I need to develop a version of this client that does not depend on a JVM. Both ZIP and GZIP ...

Hi,Could you tell me how to get F1 key event which is nothing to do with any control's focuses?For example, suppose there's a button saying "F1 exit",and the focus is on some other button.In such case, if user pushes F1, program should exits.That's what I want to do.Thank you. ...

I'm trying to get the primary key for the the row that I insert into the database. every time i use any of the ResultSet methods the program goes all haywire goes into some kind of infinant looop (at least thats what it seemd like when i debugged it line-by-line) here's my code: (by the way ...