32,199 Topics
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| | hi ppl, I was wondering why my JDK 1.4 gives error for not having any such method for dispose(); if i have button b1 on my applet it shud quit the applet when i press the button b1........but the error is shown......what would b possible solution....? my function : public … |
| | I have a question. Below is my driver, I've already written a class. The object of the program is to report a winner and loser based on a coin flip. Heads wins. I already have if (coin1.toString()==coin2.toString()) to take care of a tie. Hoiw do I report a winner for … |
| | Hi, i'm working on an application cosisting of 7 individual jFrame screens. I was wondering, is it possible to code a button to go back to a previous screen, without removing any data a user has entered - i.e without reloading a new version of that screen? I other words, …  |
| | Hi ., I have XP, at times I look at internet options & WONDER what SHOULD/SHOULD NOT Be checked to view pages properly, can anyone expand on that for me? Also there are times when I go to the SECOND Page of something & it might not display THE PAGE …  |
| | Hi, I'm developing a GUI with several forms, one of which contains a jLabel that displays a JPEG image of a graph as it's icon. How do I go about plotting a simple 2d curve on that image from a set of data? I know of drawLine etc, but how … |
| | I understand I can write a statement like: if==12 or if <12 but how do you write an if statement for something like, A = 90-100 B = 80-89 How do you write the if statement for that? My java book doesnt tell you how to write an if statement … |
| | I want to draw a surface in Java3D and I need to set bounds (using BoundingBox, BoundingSphere, BoundinLeaf or something else) because I'm working with infinite surface (in some cases I devide with number that is very close to 0). Computer automaticly sets bounds, but I need something else (for … |
| | I declared mNodes as a String Array and try to assign a value to it with sTemp which is a String as well...but there's an error occurred as: "array required, but java.lang.String found". I don't understand why. I need some suggestion please. Thank you. String sTemp; String mNodes[][] = new … |
| | I had all of this program finished except for the plotting like a week ago...Ever since then, I've been trying to figure out how to plot the stupid polynomials..I thought I had it, but the program seems to go crazy whenever it's suppose to repaint..It's like repainting components on top … |
| | Hi everyone, I need to serialize the java PageFormat and PrinterJob class to the disk as objects but the thing is that none of the java classes implements serializable. I have tried implementing serializable but it does not seem to work. I know it is weird to want to serialize … |
| | Can anyone tell me how to get rid of console window? I'm writing a gui program for an assignment... Spoiled by VB... I use the console for troubleshooting while testing or writing code, but would like to make it invisible or close it while sharing with the class. (We run …  |
| | I am new to programming and have a project due and am at a total loss. I've been sitting here reading the book for two hours and can not figure my problem out. Here is my project: You're helping Danny Ocean with his plot to rob a casino or two … |
| | Hi everyone, I have a question about doing something. I have a jtextpane that you can type text and all but i need to create something like microsoft's word 2000 in where i can view the entire print layout of the jtextpane as a print layout but also be able … |
| | Hello everyone, I am wondering where does the properties retrieved from System.getProperties defined, in some system level environment variables, some files or some other repositories. I am also wondering if I retrieved a specific property from System.getProperties, could I find out where it is defined (system level environment variable, some … |
| | I have this problem with graphics, actually I know it's with my compiler... If I try to set the background of a button or something I get erros that's not even in my code.. I have this: [Code] btnCalc.setBackground(Color.blue); [/Code] and I get theses errors [Code] //g is already defined … |
| | I have a GUI that displays a graph and I want to have some help with a code that allows you to click a point and then another point and then it draws a line. I need some help with this because I don't know were to start. ;) |
| | hey guys, I have problem in printing from java i have used PrinterJob in awt but it's going mad sometimes . it's going to it's print method two times some times doesn't print anything the code is ========================================================= [code] import java.awt.print.Printable; import java.awt.print.Book; import java.awt.Graphics; import java.awt.print.PageFormat; import java.awt.print.PrinterJob; import … |
| | code is below int average(){ //method in class int total = 0; int NOS=5; System.out.println(""); for(int i=0;i<10;i++){ if(ID ==" "){ NOS = i; break; } total += mark;// total is the problem, tried printing it // while thefor loop was running and at the end // and its says "0" … |
 | Is there anyway of actually changing the length of a slider. I have a some sliders in a grid layout and im wondering wether the grid layout will stop the sliders from expanding. |
| | I have two erros which I have tried everything to fix them C:\Documents and Settings\java:14: array required, but java.lang.String found ID[count] = ID; ^ C:\Documents and Settings\java:15: array required, but int found mark[count] = mark; heres the code class Module { String[] ID = new String[10]; int[] score = new … |
| | Hi, I am learning Java and I have decided that I should create my first project. I have the application code for a Tax calculator and I would like to add a GUI to it but I am struggling to work out how to enable the text field box to … |
| | Hi all, does anyone know of a good compiler I can download for java? It would be nice if it was an IDE but it does not have to be. I currently have the j2sdk-1_4 compiler [url]http://java.sun.com/j2se/1.4.1/download.html[/url] and it does not seem to work that well. Also I know that … |
| | This class is suppose to create a JPanel with a bufferedimage to draw on..I instanstiate this class from the main driver class, and it shows up fine, but I can't draw anything on the image, or even set the background color of the jpanel. Here is the class, see if … |
| | Hi, I have set-up a while loop to iterate an amount specified by the user. However, is it possible to compare two numbers entered by a user inside the loop and then have the larger number replace the smaller? I am having trouble because I have the first result being … |
| | Hi I need help with devising a method that will calculate the frequency of elements in a chain data structure. Here's an example of what the method is supposed to do. If x = [3,6, 5, 9, 4, 5, 3, 5, 5, 1, 6, 10, 3, 3, 1, 7, 5, … |
| | Hello everyone, I am wondering how to use java.util.Properties to get the corresponding value of a specific key whose corresponding value is an array, and I am also wondering how to express/format an array in a properties file. For example, I have a key "friends" whose corresponding value is a … |
| | I plan on writing an app that will graph polynomial expressions. My question is, what should I draw the graph on? Should I just use the regular frame and use DrawLine(), or is there something like a bitmap, or canvas thing I should use? |
| | Hi folks, I shall start my first lesson to learn Java. I found following sites/tutorials; Tutorial (search) [url]http://onesearch.sun.com/search/onesearch/index.jsp?qt=java+tutorial&uid=6910019[/url] Java Tutorial [url]http://java.sun.com/docs/books/tutorial/[/url] [url]http://java.sun.com/docs/books/tutorial/information/download.html[/url] Java Tutorial Books [url]http://java.sun.com/docs/books/tutorial/book.html[/url] Java Tutorial Sites [url]http://java.sun.com/[/url] Java Tutorial, Trailmap [url]http://java.sun.com/docs/books/tutorial/trailmap.html[/url] Training [url]http://training.sun.com/[/url] Kindly advise which of them shall I stick to at start. Are there any … |
| | hi i have red hat 9 on the system. i downloaded java sdk for linux path from sun and installed it. i did exactly what the [url]www.linuxquestions.org[/url] tutorial said, but still it says javac command not found even though i renamed the path using the locate javac command. |
| | Whats wrong with this im just dumb and couldnt figure it out help please //SLOPE import java.io.*; public class SLOPE { public static void main(String args [ ]) { int Y2, Y1, X2, X1; BufferedReader reader; reader = new BufferedReader(new InputStreamReader(System.in)); try { System.out.print("\nY2 ="); Y2 = Integer.parseInt(reader.readLine( )); System.out.print("Y1 … |
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