35,618 Topics
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| | Hi All, I hope someone can offer some help / advice. I need to plot a fairly simple line chart/graph, using some data generated previously from another Java program (run from the console) that is output to a text file. I'm really struggling trying to produce a viewable line chart/graph … |
 | Hello, I'm learning Java ME and i was building an application that is a simple contact book, but in the main form it only have menus, because i don't know how i can list the registry's on it, remember that i want to list only the names in the list …  |
| | Hello, I'm learning Java ME and when i complete the development of an application that uses RecordStore, it's simple a contact book, but when i completed the code i see that my program have an error and i use Eclipse, then it marks wrong codes in the left of the … |
| | The title says it all. Is it possible if so how would you code the kernel etc. Also is there an open-source project or something with the kernel etc already written? Again many thanks, jakx12. |
| | If choice is [COLOR="Red"]1[/COLOR], user will be prompted to enter the month and then the person and salary earned. Total number of person entered should not exceed 8. An empty entry on the "Enter person" prompt should allow user to break out of the loop. //i have been stuck on … |
| | Hello, Is there a way to center or offset a canvas component inside of a Java Frame (AWT)? I've tried a number of strategies based around frame.add(canvas), and whether I'm using a full screen frame of not, it's always aligning at the top left of the frame. Thanks for any … |
| | I'm writing a WebChat application using the socket functions in java. I'm able to listen for incoming sockets on the server side and connect from the client side just fine, but I'm having a problem communicating from the client to the server to ALL the clients. Right now, I have … |
| | I have 2 submit buttons in a jsp page. in the form action, i forward the request to a servlet. N in the servlet, i need to write logic for the respective button clicked in the previous jsp and redirect to a new jsp... Kindly help me with this... I … |
| | Hi, Let's say i have Main.jsp and return.jsp. i call the return.jsp from main.jsp and want the return page to return a string which I need to store in a variable in Main.jsp. How can I achieve this? Cheers!  |
| | i am a Bsc software engineering undergraduate , can any one tell me a project which is related to java service oriented architecture ? ,i am searching for a final year project. and i thought of doing it on java SOA if any one can suggest me a project topic … |
| | Hello. I have an undecorated JFrame (Which is rather boring by itself), and I would like to know how to get a drop shadow effect for it. I have researched it, but I haven't found anything, anyone have any ideas? Thanks in advance!!!  |
 | Hello, I have a question, in my program I want to read a text field then to convert it to Color, How Can I do this ? I try this, but I didn't know if this is right : [code]String colorString = getCarTextButtons()[3].getText(); Color color = Color.getColor(colorString);[/code] |
| | hi everybody, I'm having a problem on what to do next in my project. below is what i need to do. if any body let me know if i'm doing it right and if i need more classes. help on boolean, clone and finalize method. Thank you... A library needs … |
| | Hi everyone! This code runs without throwing exceptions and stuff, but it doesn't exactly run when I click the "Submit" button -- what is supposed to happen is that I click it and it generates a random number. What happens is either nothing or if I get lucky and click … |
| | Hello, I'm learning Servlets technology, but i'm already a Java developer and i want to know how i can develop a servlet that have two pages, the first is a page that have a button and two text fields, one field of title and the other a memo field, but …  |
| | I know there's loads of these threads already and the norm is to [URL="http://www.google.co.uk/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-GB%3Aofficial&q=null+exception+error+java+method&btnG=Search&meta="]Google it[/URL], but I can't seem to find the solution. Anyway I keep getting this darned error and need to know how to fix it ASAP, since the Servlet project is due in this Wednesday. Code is … |
| | Hi, I'm using eclipse to write my programs but for some reason this code does not work can someone tell me whats wrong with it? here is the code. and sorry if i didnt use the code wrapper properly. package dataTypes; import javax.swing.*; public class Window { JPanel pnl = … |
| | I have a Player class, a Weapon class and a Projectile class in my applet game. The weapon class uses Projectile objects when fired. For example, everytime I click I want this code to execute: [CODE]projectileList.add( player.weapon.fire() );[/CODE] player.weapon.fire() returns one or more projectiles that the projectileList handles every frame. … |
| | Hi , i want to learn programming for android , so i download android sdk 1.5 and netbeans plugin . i have a problem when i run program that i Have written emulator not shown !!! and this message shown : select device please help me , what i should … |
| | I have a class Banner that extends JFrame implements ActionListener and is responsible for thread handling via actionPerfmored. "launch banner", "pause banner" works. "resume banner" seems to be dead alltogether [code=java] import java.awt.*; import javax.swing.*; public class BannerP extends JPanel implements Runnable { int width, height, xPos=10; boolean stopT; public … |
| | Dear Friends...!!! I have written a jsp file, its working very fine in my PC, BUT now i would like to upload my jsp files to somewhere on the internet so i can access my jsp files over internet... Please Tell me 1. where should i upload the files? 2. … |
| | Hello, I'm starting in Java ME development, but i'm already a Java for desktop developer, but how i can build Jar files for my Java ME applications using my Eclipse or command-line, i want to build it only. Thanks, Nathan Paulino Campos |
| | Hello, I'm learning Java and i want to build a program that save emails to an [i]*.txt[/i] file, like this: One guy send me an email, then the program periodically search if i have emails every 10 minutes and if i have it saves all the emails in a single … |
| | Hey everybody :) I am writing a program in NetBeans to write an invoice... the user has to click a few buttons to add the values and then clicks the "add to order" button and the information is stored in a jTable (this is all working) when the user clicks … |
| | What I have is this: [CODE=Java] public abstract class Ability { public class Action extends Ability{} public class Reaction extends Ability{} public class Support extends Ability{} } [/CODE] I have it like that so I don't have all of the Ability-extended classes in their own .java file (to save room … |
| | i have some basic knowledge of oop in java like polunophisum , inheritance etc but i do not about techniques like coupling and cohesion plz help me |
| | hi all i got problem on JProgress bar. when i click on button progress doesn't show. it display after completing the progress [code] class A{ //button clic ProgressBar frame = new ProgressBar(); frame.pack(); frame.setVisible(true); frame.iterate( ); class ProgressBar extends JFrame //inner class of A { JLabel l1; JProgressBar current; Thread … |
| | Hi experts, I got problem in servlet. I have a web page that has two buttons (submit button and update button) , both buttons call the servlet. my question is how I let my servlet program distinguish the two buttons when one of the two buttons is pressed. the servlet … |
| | Hi, I am new to the java world. I am getting the following error. ClassB.java:62: incompatible types found : int required: order.ClassB return Integer.parseInt(conString); This what I am trying to do.. I have two classes. Class A and Class B. Class A calls a method located in Class B (refer … |
| | Hi experts, I am having a problem with sending mail from servlet I have written this code : [code=Java] import javax.mail.Session; import javax.mail.Message; import javax.mail.Transport; import javax.mail.MessagingException; import javax.mail.internet.MimeMessage; import javax.mail.internet.InternetAddress; import java.util.Properties; public class EmailSenderDemo { public static void main(String[] args) { String from = "ali@mlabs.com"; String to = … |
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