32,199 Topics
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| | Hi. I have a Vector of Vectors that I need to rotate 90 degrees clockwise and 90 degrees counter-clockwise. I got it to rotate Clockwise, but whatever I try, I can't get it to rotate counter clock-wise. The 2D Vector is not always going to be a square. It will … |
| | [code] i read that a method that is is using throws clause must be mentioned in the try and catch block.So when we use "throws IOException" in the following program why dont we use try and catch import java.io.*; class testthrows { public static void main(String args[]) //throws IOException { … |
| | anybody help me!! i have one tombol that tombol will be used to evaluate the explain!! i have some question with answer choise(a,b or c) with that tombol i want know if my answer true or false!thanks can you show me with a simple database and last question from me …  |
| | Hi, I am trying to write some code to insert coordinates which are taken from the mouseClick position and then added to a 2D array. The user should click 6 positions on a panel and these positions should be stored in a 2D array. I hope you can help. Thank … |
| | im trying to draw a curved line using mouse. there are three points on a straight line. a starting point, an ending point and a point in between. i want to draw a curved line by dragging the middle point in any direction. the other two points remain constant. |
| | Hello~! ...again.. I got some help from you guys a while ago with this same app because it wouldn't run on winxp. It runs fine now, but my brother is still telling me he cant get it to work right...so rather than go through all the trouble of trouble shooting(he …  |
| | Hi. In my attempts to create an email client, netbean's GUI builder has made me very unhappy... so, I decided I'd rather code it by hand... not my best idea, but whatever. Now, I'm trying to nest a Vertical JSplitPane in a Horizontal JSplitPane, and I can't see the left … |
| | i need to how to give codings to buttons that are present in confirm dialog box. For Example if there are two buttons as "YES" and "NO" and if i click "YES" then the program should close. If i click no then th dialog box should return to the program. … |
 | Hi, I am trying to create a HTTP file upload setup for a java application. So I have got a File Upload server which is working and a Client (I am not sure what changes I should do to make my Client code work with the server code) NEED HELP … |
| | Hey Fellas...Im getting this error on a "select box"...im trying to parse some info: PWC6197: An error occurred at line: 88 in the jsp file: /jsp/cpanel/HomeSellerList.jsp PWC6199: Generated servlet error: string:///HomeSellerList_jsp.java:147: cannot find symbol symbol : method indexOf(java.lang.String) location: class java.lang.Object PWC6197: An error occurred at line: 88 in the …  |
| | I'm sure this is going to be really easy to figure out and might even be something like trying to use correct grammar (this has happened to me a few times), but I've stared at this code for hours upon hours and don't know why NetBeans says it's wrong. There … |
| | Hi there, I need to write a program that draws a clock face with a time that the user enters in two text fields (one for the hours, one for the minutes). As far as I can tell I have all the code written, it's now just a matter of … |
| | hi, i got class A which class got some graphics to display. when i run the program in class A its fine, but i when run from class B it display like 40 sec delay. any one who can help me? really need help! |
| | I am trying to make a java sever code communicate with and iphone hello world app. When I run the iphone app it sends the length of the string first then sends the string. the Length of the string should be 2 but my server code prints out 33554432. Also … |
| | I am having trouble with a project that is used to create a simple library database. The code does compile but during runtime, it throws a nullPointerException. It points to addBook in my main method. Here is my code: [code]public class Library { Book[] books; int numBooks; String address; static … |
| | OK, I haven't done much with Serialization. I have a simple program that creates four JPanels with different background colors and adds them to a larger JPanel using a 2 x 2 GridLayout. That larger JPanel is added to a JFrame. I've written my own serialization code to override the … |
| | i am an IT STUDENT MY INSTRUCTUR HAS GIVEN ME ATASK TO BUILD WEB BROWSER IN JAVA AFTER GUI WHAT I HAD TO DO PLEASE HELP ME!!! NOT GIVE ME THE CODE JUST TELL ME EASY STEPS COMPLETE IT THANKS!!! |
| | I can quite honestly say I am lost, having learnt HTML during the past 2 years and trying to understand a bit about java, but find myself very confused. Yes could look in books but find them equally confusing the same as when learning HTML and preferred to do more … |
| | Task: Given input file A, translate the content to produce output file B Hi there, I need help in solving this domain problem. Any help will be appreciated. ====Scenario========== File A: Consists of multiple lines of data whereby each line is of form X;1.9,2;3,4.3; 5,6 Output file B, should consists … |
| | Hi, I have a strange situation to tackle.I have a paging for the website I am developing. there are few records in the table which i want to skip from to display in my list in the web page. But paging works on the total num rows as using mysql_num_rows(resultset) |
| | I would like to know how one can make an installer, which I believe is supposed to copy needed files for an apllication to run to somewhere on the PC. I have read about how to make .jar files, and evaluted some softwares that can make installers. However, I have … |
| | Hi where do i download component for java and how to use it ???  |
| | need help with outputting an array of objects to a text file. new to java so any help would be much appreciated thanks johnny |
| | Hello, I have a problem with my code and can't see what the difference can be. I am trying to change my JLabel text via a timer using .setText I have 2 small apps to demonstrate my problem. 1 - I have a JLabel within a JPanel within a JFrame, … |
| | Does anyone know how do I made script for lock folder on mobile phone? |
| | hi,i have a unique problem.actually i wish to put a polarchart developed using JFreechart on the frame that already has components placed on it.What i want to do is to make the particular component overlap the polarchart. How can i do so? i thought of creating the polar chart using … |
| | Currently I'm creating application to work with PDF documents, just for challenge. I want to know if there is better solution to my idea of possible approach. I broke down application GUI to four main components toolbar with image icons, jpanel for thumbnail preview, jpanel for single page view and … |
 | [COLOR="Red"]The program is given at the bottom[/COLOR] To compile java programs in the command prompt I use the following command: C:\jtemp\MyPack>javac AccountBalance.java -d . Only then are the classes compiled and I am able to run the main() function. When I execute the above command a folder "MyPack" is created … |
| | I have been trying to build a Java program to prompt the user to enter the radius of a circle and the diameter, circumference, and area will be output through a "System.out.printf" statement. I can get the program to prompt for the radius and it will display the diameter, but … |
| | Dear mates, I am am frustrated and bored to learn how to get or calculate coordinates data for Java Graphic API. for ex the GeneralPath 's function curveTo() takes 6 parameters namely x1,y2,x2,y2,x3,y3.I put some random coordinates data into these function and got a crap drawing. :( I want to … |
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