66 Discussion / Question Topics
Remove Filter  | Hi there, This is just going to be a quick question. Also just note that I am i some "remote location" so I cant even show you my code. But what I want to know is this: Say you have a package called "myPackage" and inside that you have 2 …  |
| | Hi there, I'm getting an error saying: non-static variable MainList cannot be referenced from a static context. My snippet of code where the error is occuring: [CODE] //this method is in a class called ViewContact public void printInfo(){ int index = MainScreen.MainList.getSelectedIndex(); } [/CODE] Now the List "MainList" is in … |
| | Hi there, In my little code snipet below I am trying to convert an arraylist to an array of type contact. Obviously it's expecting an arraylist of type contact to convert it to an array of type contact. But it's picking up the arraylist as type object for some reason. … |
| | Hi there, A thread was started earlier about splitting up a String using the split() method of the string class. Reading that did help me quite a lot in solving a problem of mine that is VERY similiar. Say I have this in a txt file: "Dean Grobler 0794400541 NA … |
| | Hello there, In one of my projects I'm working on currently. I have a 'cancel' button in my GUI window that is suppose to close the JFrame the button resides in. I have done some research on the web about this. But it seems like one has to write a … |
| | Helooo, Attached is a pic of my main screen of my program. Basicly it's a phone book app similiar to one you'd have on your phone. The thing that I can't wrap my mind around, is that you see the nice big textArea there? After you've added a contact now. … |
| | Hi there, Consider the following code, this is a little 'snipet' from one of my classes: [CODE] private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) { NewContact n = new NewContact(); } [/CODE] The method is expected to open a new Frame, where the class of the new Frame is called "NewContact". I've recently … |
| | Hi there, I just wanted to find out if one can have a actionListener() in one .class file and then have the actionEvent() in another .class file? If not, how would I go about to get the same effect? Thanks! |
| | Hello! Attached is a file (GUI.png), I quickly did this in excel so.. It looks pretty crappy obviously. But when you take a look at the image and the layout of the components etc. What would you say is the best LayoutManager to use with this? GUI design is fun, … |
| | Hi there, In the code below my ImageIcon isn't showing when I run the program. I always struggle with adding Images in my GUIs and it's irritating. Is there some all important rule that I should know or something? [CODE] //Create window Components JLabel lblrequest = new JLabel("Enter amount of … |
| | Hi there, I've just switched to Eclipse. I've been using TextPad so Eclipse is pretty cool.. But I've been getting weird error messages that I don't understand/not used to. Here they are: [CODE]JButton btnEnter = new JButton("Enter"); btnEnter.addActionListener(this);[/CODE] Here the Error says: Multiple markers at this line. -Syntax on token … |
| | Hi guys, I have this assignment to do: Synchronize access to the instance variable, accBalance. Because accBalance is a double and not an object, it cannot be used as the monitor. Use synchronized methods or synchronized blocks of code, as appropriate. Simultaniously test two threads. Because the threads can complete … |
| | Hi there guys, I got this assignment where I need to set a session attribute. Although I'm having problems since I cant set attribute that is of type double? I got these hints but since I've worked with doubleValue() or downcasting, the hints didn't help me much.. Hints: -Recall that … |
| | I'm struggling with a servlet that's suppose to represent an "online banking service". Once you run the servlet you'll see it's an extremely simple example... You enter an amount in the textfield provided, then click on the apropriate button depeding what action you want to perform e.g. "deposit","withdraw" and "balance". … |
| | Hi all, Does anybody know what this "WSaction" is? What it does and most importantly how it works? I've tried googling this but hardly found ANYTHING.. I'm busy working with Servlets and as far as I can tell it checks what button was pressed in the HTML form.. But I'm … |
| | Hi there, Name's Dean, I'm a java student here in sunny South Africa.. Very impressed by daniweb! Been with other IT communities, and daniweb seems way more ontop of things. Other than that, I'm excited on helping other java students like myself. And I still have tons of questions that … |
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