32,204 Topics
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| | import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Calculator { public static void main (String [] args) { JFrame frame = new CalculatorFrame (); frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE); frame.show (); } } class CalculatorFrame extends JFrame { JTextField jtf; JLabel jlb; JTextField jtf1; JLabel jlb1; JTextField jtf2; JLabel jlb2; JButton jbt; JButton …  |
| | [CODE]String str = "D:*Course 2007 Sem 2*WXET3309*WXET3309_Lab*WXET3309_Lab 2.doc"; System.out.println(str); String[] word = str.split("\\*"); int i = word.length; //length is 1 more than array i--; //last index = last string System.out.println(word[i]);[/CODE] The code above is code to get the last string separated by the symbol *. I wonder how should the … |
| | Hi, My enquiry involves how jsp handles graphics updates I refer to the technology prior to .NET when ActiveX controls were embedded in web pages. The control (in the form of a dll) was typically downloaded to the browser and executed on that browser. I believe a similar situation exists … |
| | Hello developers, I have a Product class defined. Then have an applet extending this class. This applet lets me key in: 1.Ordered item 2. Quantity to order then display total amount payable for each item ordered plus the total amount of all items ordered. I am learning to use array … |
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| | I am have no idea wat is wrong with my code. The system is supposed to get 3 inputs from users and display a message box to show the number in ascending order. If i were to get input from input box and display it in message box it will … |
| | Can an object that implements runnable throw an exception to its caller? I ask this cause the run method itself can't throw exceptions so i wonder how it could be achieved. Basically the run method itself can throw an exception but others can't see it (RuntimeException) but can it throw …  |
| | I am trying to do a sort of and expiry date so that when an account is created about 3 months later I'll be informed so that the account can be renewed. I don't know how I can do this and to tell you the truth I never used the … |
| | I am trying to do a primary key so that each member can't hava the same ID and if th same ID is entered an error is give. Can someone please help me cause I can't do it at all.Thank you. [CODE] static void addMember(ArrayList<GymUser> UserListIn) { String tempUserrID; String …  |
| | pi = 4(1-1/3 + 1/5-1/7 + 1/9-1/11 + 1/13-.........- 1/(2i-1) + 1/(2i+1) ) I am starting this program to approximate pi. Would someone be so kind as to direct me to information concerning this formula? |
| | Hello everyone, I'm in my senior year of high school and I have just started taking my first programming class. As it turns out, we use Java and then Visual Basic later on. My question is, as a Computer Science major, will I use Java again in college, or is …  |
| | I want a very simple player code to playes mp3 or wav files and also want to know where I should put it in my VisualMidlet to be played when I select special part of my choice group? please help me it's so important for me. Thank you all. |
 | hi all, i want to open a file from the server system using java pls anyone can help me pls i dont have any knowledge about this pls tell some idea.  |
 | Hi all, I am fairly new to using Eclipse (or any IDE for that matter) and I am having trouble getting the TPTP Profiler plugin working. I'm hoping that someone out there might have seen this behaviour before and has the fix for it... :) I am running Eclipse 3.3.1.1 … |
| | I have strings in Java where each one is as follows: "Case Number XXX-XXX-XXX" The "XXX-XXX-XXX" part is different for each string. I want to just extract the "XXX-XXX-XXX" portion of each string. I am assuming this is the third token in the string. What would be the best way … |
| | Alright, I've been working on this one line for awhile, can't quite get it. I need to read all the characters after the "," (comma), ending at the end of the line. I'm guessing I'm just making a simple mistake. Can anyone help me out? [code]blocksArray [numBlocks][1] = Integer.parseInt(line.substring (line.indexOf(","),line.length())); … |
| | is it possible that i could create an array from a class and return the value of that array? and how? how can i access that array  |
 | I am developing a program to gather information from the client. I have apache tomcat web server and all the client have one client program to communicate to the server. I want to make this connection http for security reason but i know how can i do this. It is … |
| | Hello everyone.. I need to retrieve the number of classes loaded from the MBeans and I am facing problem with the same... Is there any specific package to be imported?? I am unable to work it out though it is really simple.. Thanks in advance... |
| | For the guys who helped on the card.java file I did thnaks a lot I got that done. I have now moved onto the next part of that and have to complete this skeleton file. this is the spec for this file. [QUOTE]This class has two attributes: an array of … |
| | Hello everyone.. I am trying to retrieve a URL of applications from a text file... My text file contains 3 URLS for 3 applications say for example : C:/ABC.java C:/JVM.java C:/Tomcat.java I have tried implementing a code for the same but when I try to copy the URL into a … |
| | import java.awt.*; import javax.swing.*; import java.awt.event.*; import java.awt.Graphics; import java.lang.Math; import java.applet.Applet; import javax.swing.event.*; import javax.swing.event.*; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class Maint extends JApplet implements Runnable,ActionListener,MouseListener,MouseMotionLi stener { /* Declaring the variables.*/ JPanel panel; JPanel textAreaPanel; Point dot[] = new Point[1000]; Point start, end; int dots = … |
| | I'm making a vending machine .. and everything's pretty much together, I just have a few problems that I don't have the faintest clue how to fix Firstly, when I choose a snack, the price of the thing comes up fine, no bother. But if I start to pay, then … |
| | I am very new to java . I am having some confusion in java versions. Actually what is java2 java 5 ,jdk1.5 alot of confusion i am having . Is there any special meaning in that. What j2se,j2me,j2ee. What is the difference among them. Is there any special purpose for … |
| | I am trying to do a primary key so that each member can't hava the same ID and if th same ID is entered an error is give. Can someone please help me cause I can't do it at all.Thank you. [CODE] static void addMember(ArrayList<GymUser> UserListIn) { String tempUserrID; String … |
| | Hai, i am tried to use the SQL Server with Java and Tomcat 5.0 Application Server. I am using the JDBC Driver for Java connecting with SQL Server. I m using SQL Server 2005. But the JDBC Connection doesn't create. I have used the following code for java database connectivity … |
| | so i wrote this recursion program that uses memoization to calculate the fibonacci numbers. it's supposed to scan a user inputted number, call the method, check to see if the number is in the array, if not store it, ad increment the counter. so i should end up with the … |
| | In this method I am trying to locate a user by its ID and then remove it. I am having errors in the second if statment (cannot find symbol-method getID() ). [CODE] static void removeMember(ArrayList<GymUser> UserListIn) { Scanner keyboard = new Scanner(System.in); keyboard.useDelimiter("\n"); System.out.print("Enter the ID no of the member … |
| | hey guys, i have a project due tomorrow on recursion. the task was to write a recursive program that prints the value of fibonacci numbers and the number of calls made. i wrote the program and it returns the value at the end just fine, but i have been unable … |
| | Tried to zip multiple files on the fly in java servlet with zip package (ZipOutputStream), so users can download the zip file by calling the servlet. It works fine for small files. But occasionally the browser stops the download before completion when users invoke the servlet action, and the zip … |
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