35,619 Topics
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| | when the above code is executed then it is showing that m string is undefined, please tell how to modify a string ,which is taken as input [code]String m; BufferedReader x = new BufferedReader(new InputStreamReader(System.in)); try { m = x.readLine(); } catch (IOException ex) { Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex); } a--;} …  |
| | I am new to netbeans..i need help about jbuttons functionality.i want to make a main window having some buttons that can lead to other applications/projects i have created. How to link different projects/applications through one main window.e.g main window having button Calculator,on pressing it should lead to calculator application.and a … |
| | Hi all, Ok, so I know how to write a simple client/server app where the send a message from the client and the message displays on the server's textarea, and I send a message from a server and it displays on the client's textarea. To do this I normally use … |
| | I'm trying to make a program that will toggle a boolean value and paint a red rectangle on the right side of a swing panel when you press the 'a' key. Unfortunately, I'm not having much luck, because when I hit 'a' nothing happens. My mistake is probably something obvious … |
| | Ok, this is very, very strange, and annoying. I declared this variable in my IDE: [CODE]long me = 2323237777777;[/CODE] And I get a compilation error saying that the literal 2323237777777 of type int is out of range. I don't understand. Isn't long supposed to be able to handle this type … |
| | Okay, First and foremost im new to the forum. Hi and Thx to anyone who helps :D Anyhow, i would like to ask you guys if it is possible to separate a String with tokens one by one. Then make them appear in the jTextField with only 1 word per … |
| | I am developing the web app and i am new guy I want to include the trace path like one following shown. [CODE]Trace: » about » hai-world » keywords » playground » home[/CODE] How i include within the web-page and i am using the Java Servlet and JSP Technology.. (This … |
| | My button is not gaving out any action when clicked: (libraryBtn): [CODE]package LibraryDatabase; import static javax.swing.JOptionPane.*; import java.awt.*; import javax.swing.*; import java.awt.event.*; public class PostLibraryDatabase extends JFrame implements ActionListener { // Text Fields XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX JTextField firstName, surName, id, serialNumber, category, dateToday, coverTitle, isbnNumber, authoursName, coAuthoursName, pubDate, loanDate, returnedDate, email, details; … |
| | Hi! I read the jmf tutorial for how to capture an audio. I tried to run there code in netbeans but it din't work . This vector: Vector deviceList = CaptureDeviceManager.getDeviceList(new AudioFormat(AudioFormat.LINEAR, 44100, 16, 2)); was null. This means that it didn't find a device to record with? I used … |
| | Hi, I have downloaded j2ee server and compiled the jms programs successfully. But,i cannot able to run the j2ee server. My directory Structure: j2sdkee1.3.1/bin [root@localhost bin]# ll total 48 -rwxr-xr-x 1 uucp 143 345 2002-01-17 17:18 cleanup -rwxr-xr-x 1 uucp 143 1715 2002-01-17 17:18 cloudscape -rwxr-xr-x 1 uucp 143 463 … |
| | I am a student looking to create a functional ftp client software from scratch with java for my licence project. I am looking for: any usefull books regardind the subject of file transfer, sugestions on features that I could implement to make the project more unique and usefull, tutorials and … |
| | I use a mysql database with students and grades for a training program. I would like to create a dynamic form with one field that works like this: if i write the name in the form and press check, and the student exists, i want it to show me the …  |
| | I am not getting a efficient way to solve the problem, the time taken i more than 5 sec while the time alloted for this problem is 1 sec .so please help me .please give me a answer using collections. ========== EASY - 2 ========== The great pirate Khurafati and … |
| | Hi I want to capture the output into java varible of one of the command line statement. The command line statement is as below: [COLOR="Green"][B]..\_jvm\bin\java.exe -cp ..\DataLoader.jar com.salesforce.lexiloader.security.EncryptionUtil <option> <password>[/B][/COLOR] Infact this is the command line utility thru which I encrypte my password, if i do manually. [B]But I want … |
| | May I know how to split a word into individual characters (letters)? For example, AUGC into A U G C |
| | [CODE] coordinates2[i][0]= Double.parseDouble(text2.substring(30,38));//X coordinates2[i][1]= Double.parseDouble(text2.substring(38,46));//Y coordinates2[i][2]= Double.parseDouble(text2.substring(46,56));//Z [/CODE] Can I do this: coordinates2[i][j]= coordinates2[i][0]+ coordinates2[i][1]+ coordinates2[i][2]; Is it possible to add them all together ? |
| | I am doing a payroll program that requires a sentinel value. I cant seem to get it right no matter how much I try. here is my code so far: //Filename: Payroll3.java //Description: Payroll calculator with sentinel loop //Author Name: Chris Russo //Date: 08/15/2010 import java.util.Scanner; public class Payroll3New { … |
| | I have 2 arrays that are in a while loop each. I have declared the array ouside of the main, declaring it 'public static'. I want to use the values store in the array outside of the while loop, but I can't seem to do it. May I know how … |
| | hi. could some one help me. I am trying to read the tokens into the array but the datatypes are incompatible. what should i do to cast it into the same thing. the numbers from my text file are actually floats. But i can make do with just the integers …  |
| | Hi, Can anyone send the download link of j2ee server. thank you, With regards, Prem |
| | Hello, I am starting to learn java and I was wondering if anyone know of any resources/websites that have projects I could attempt to improve my skills and expand my java knowledge? Thanks. |
| | Hello, I am having trouble with my Odd/ Even Code. Can anyone help me with this? Or has a current code? |
 | [CODE] class character1{ public static void main (String args[]){ float a,b; a=Integer.parseInt (args[0]); b=(float)Math.acos(a*(180/3.14)); System.out.println (b); } }[/CODE] the above program isn't working when entering angle other than 1 , why ? |
| | Hi I was wondering if someone could help me with a code for my website? Basically what I want to do is have a drop down list that is essentially a matrix in the sense that picking one option leads to another and eventually you can narrow down the results … |
| | I'm trying to create a method which checks if a certain text file is empty, and if so it deletes it. However, the program seems to freeze for one reason or another when executing this part. [CODE]try { BufferedReader in = new BufferedReader(new FileReader("File List.txt")); String str; while ((str = … |
 | hi, i'm wanting to do a for loop on the last line [CODE]System.out.println(host + "\t" + status);[/CODE] of this bit of code so that when i replace [CODE]String host = "server";[/CODE] with something like this: [CODE]String hostarray[] = {"pc","server","pc2","another","etc"};[/CODE] that i get output that looks like this: Server Up? pc … |
| | Hello I want make java application which start running when system (OS)start anyone can tell me where i must search or a demo for that any help will be appreciated Thanks Yours Ahmed Ghazey FCI-CU-CS  |
| | Hi everyone, I will be really thankful if someone could help me out. I am developing a gui application ( based on java jdbc and oracle10g), where a user can enter queries retrieve data from that can perform selection projection join union. Till now I could perform only selection queries … |
| | i want to develop a parallel thread based application , so which is best language for it??  |
| | the few things that i cant understand are inside the code.. The code should give out the car type, model type ,serial number. and the number of cars.. [CODE]public class part5{ public static void main(String[] args) { System.out.println(Car.getCounter()); Car[] cars =new Car[5]; for (int i = 0; i < cars.length; … |
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