35,619 Topics
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 | Hello, I am trying to create an MDI application and am having problems with one of the frames. Walking through the errors, the first error points to a list generated by Netbeans code that I think is the null problem. When I look further down the error list, I get …  |
 | I am a beginner in java does not know much about it. But to practise it I have tried to simulate the popular game Hangman using simple methods.Please Guide me with the code In this program the words are given by the user and then they are converted in to … |
| | I have java tcp socket programming...... In that i need to send a file from client to server .... at the same time i need to chat with that client ...... by what way i can do this ... |
 | i want to add scroll bar to scroll this page..this page is user log-in form... to add more fields i have to add scroll bar how can i do so ..pls help package user; import java.awt.Color; import java.awt.Container; import java.awt.Font; import javax.swing.*; public class form extends JFrame package user; import … |
| | is there a function for: ex1: String = "2+2.3/34" output: double = 34.0 ex2: String = "45/4+3-0.4" output: double = 0.4 so, find the last operator and take the next number into double. note there are no spaces. |
| | Hello, I am taking Java fundamental course and I've came up with a confused character i.e # on assigning variable name on Java lately. I have surfed the internet a lot but all I could find is only oprerators, keyword and reserved words are not allowed. so why is # …  |
| | How to parse a string data " B. Prakash 98400 51038 B.M. LAL BROS., TYRjijbEALERS 3 Whites Road, Royapettoh,thennai r 600 014. Ph: 2852 4560 Fax: +91-44-2858 8306 Email: bmlalbros@etn.iiet'" conisder this is my string data and i need to fetch name, address, phone , email seperately is there any …  |
| | I have an existing Access database that works well using Access. However, the HR department has convinced management to change to Java as the programming language of choice. I have done very little programming in Java, and have NO CLUE how connect to an Access database (2003), how to read, …  |
| | I was trying to send an email using javaMail API using my own smtp server to gmail/hotmail/etc..I put the following code to specify smtp server's settings Properties props = new Properties(); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.host", "my smtp host"); props.put("mail.smtp.port", "my smtp host's port"); Session session = Session.getInstance(props, new javax.mail.Authenticator() { protected … |
 | I was just wondering if anyone other than me thought that it would be incredibly usefull to have a language that was both dynamic AND statically typed. **Using Java as a example, it could do the following:** **1)** Define a special dot operator that auto type casted something of type …  |
 | hey there, I am looking at a maven project that makes use of another maven project. say project A and project B. In context.xml in project A, I see these two lines <value>classpath:oneFile</value> <value>classpath:otherFile</value> I have been trying to figure out what is the actual value of classpath, so what … |
| | Hi all, I have recently been give a project to create an invoicing system for a small business. The system needs to be able to easily add new customers and store them for usage within invoices. There also needs to be a form to enter invoice data and invoices need … |
 | I have a popup window that instead of the ordinary YES_NO_CANCEL_OPTION I want the user to select from 3 options {A, B, or C} static int Select_Use_Move_Items(int Select_Col){ int n = JOptionPane.showOptionDialog(frame, "Select Option for:\n "A: Remove - Discard one Item\n"+ "B: Transfer one Item to Person\n"+ "C: Transfer one … |
| | i am making a calculator in swing and need help with some logic. so some of button my cal will have: 0,1,2,3,4,5,6,7,8,9,dot, mult,divide,mod, equal,sqrt, ln,log,sin,cos,tan, ^, exp, fractor, etc...... bc i have alot of buttons i need a good way to compute them. here what i am thinking: first user …  |
 | hello all i need to create comobox untill value come from database,example:-if in data base have 5 value then there should be five combox and value should be set in combobox each time automatically anyone help me to how create combobox that should equal to np. of value in database |
| | Hi all, I was trying out this for loop example and i notice that the for loop only works for the printing of x.The printing of y value did not work at all until the loop ends. I am trying to understand how for loop actually works. Am i right … |
| | Hey guys, I'm working on a tip calculator as an excercise from the book I'm using to learn Java, and I've run in to a bit of a problem. When I run this code: import java.util.Scanner; public class TipCalculator { public static void main(String[] args) { Scanner input = new … |
 | I have no idea how to do this: Create a class called Date that contains three pieces of information as instance variables – a month, day and year e.g. 4, 14, 2007. All three of type int. Your class should have a constructor that initializes the three instance variables. Provide … |
| | Hi I keep having problem on trying to call the method 'in3050'.Please someone guide me on this???? Thanks public class NumberCheck { private static void main(String[] args) { int num1 = 31; int num2 = 40; boolean check = in3050(num1,num2); } public boolean in3050(int a, int b) { if (a … |
| | I am working on a Java to C# conversion project. In this project, my custom java library uses `java.net` packages [`DatagramPacket`](http://docs.oracle.com/javase/1.4.2/docs/api/java/net/DatagramPacket.html) and [`DatagramSocket`](http://docs.oracle.com/javase/1.4.2/docs/api/java/net/DatagramSocket.html) classes. Are there similar classes in .NET C# with similar functionalities?  |
 | Create a program using JCreator that will accept student`s information. It should also accept his/her exam score for a specific quarter. Then the program must compute for the exam`s equivalent grade. Lastly all exam grades must be accumulated in order to get the student`s final grade. Prelims,midterm,prefinals 20% and finals … |
| | I have java code that uses Java's `java.util.Timer.schedule()` method. **Method Description:** *The `schedule(TimerTask task,long delay,long period)` method is used to schedule the specified task for repeated fixed-delay execution, beginning after the specified delay.* public void schedule(TimerTask task,long delay,long period)java.util.Timer.schedule() Is there an equivalent method in C#? If NOT, how can …  |
 | Hi all, I want to know the java code for transfering the multiple files between server nodes to server node. With advance thanks, CuteOrchid |
| | I have this array in a page and i want to call it into a listview or textview in another page...how do i do that? [CODE]public class Screen2 extends Activity { public static EditText txt1; public static String player; public static ArrayList<String> playerList = new ArrayList<String>(); /** Called when the …  |
| | Hello! I've been very interested in the V8 JavaScript engine recently, so I fetched the source and built it successfully, so far so good. I also successfully compiled the [Hello, World!](https://developers.google.com/v8/get_started) program Google provides. I've also read the [embedders](https://developers.google.com/v8/embed) guide. Other than that I can't find any documentation or examples … |
| | my `display()` method is public and looks to be defined , however eclipse says that its not defined. this is a code for an amortized time resizing circular array. can someone help me out here ? also , please do point out if you see something else wrong with the … |
| | I have a bizarre thing just happened in NetBeans - the red error markers on the LHS of the editor window have all vanished. There are still errors - the files are flagged as having errors, and the errors are correctly diagnosed when I do a clean/rebuild, but no error … |
| | <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>Hello World</title> </head> <body> Hello World, <s:property value="name"/> </body> </html> I tried this code from an online tutorial. However eclipse says 'Can not find the tag library descriptor for "/struts-tags"' in line 2. Do I need to set … |
| | I am having trouble getting started with my program. I have writen the array but I am having trouble starting the if statemnent to fill the seats in the program. If they press 1 it needs to fill seats 1 through 5 if they press 2 it needs to fill … |
| | I'm new to JavaFx and Java GUI development in general. For those not fermiliar, it seems that JavaFx threading has some similarities to swing. Anyway, I'm a little confused about when to use a `Thread` class and when to use JavaFx's worker classes (`Task<a>` for example). Should I use JavaFx … |
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