36,051 Topics
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 | Oh boy They ust be tired of me now. My trouble: I have two ArrayLists of custom classes. ``ArrayList<Subject>` **a**` ``ArrayList<Student>` **b**` Within those custom classes are other custom classes which themselves have primitive data types as well as an ArrayList of other custom classes. It's a big circus going …  |
 | Hello, I am new to visAD library. I am trying to plot a 'lowerTerrain.nc' file in visAD. But its longitude(-180 to +180) and latitude(-80 to +80) ranges are displayed automatically in -150 to +150 for longitude range(X axis) and -90 to +90 in latitude range(Y Axis). I have tried this: … |
 | hello good people, i am trying to make a small program that takes input from 4 text fields and adds them to the database(i am using mysql through wamp server) and some other database operations. my Exit and Clear buttons are working. I am using Swing class but have done … |
 | I want to make and If statement which will work when a double "credits" is between 1 and 9. But I'm not sure how to. Will If (1 <= credits => 9) Then Work? |
| | hey buddy's i had one problem in servlet in jsp program. Exactly i'm getting this error, why i'm getting this error and how to solve this error., Have some tips: thanks in advance., |
| | hey buddy's, i'm creating the program of employee details and i will inserted the fields are ADD,UPDATE,DELETE,EXIT,. I hope the all thing to find the exact solutions but, particular one thing only, that was UPDATE and these are the following some tips and code: 1.the input is not going store … |
| | Hello Daniweb, I am creating a project (using NetBeans for GUI) for my Data Structures and Algorithms course. The gist of it is as follows: -Take 7 letters as input -Display a valid word as output (And later, when this issue is hopefully resolved, several words) Basically a software one … |
| | Hello good day. I am having trouble letting my listeners wait on each other. I have a 1. JComboBox 2. JList - groups 3. JList - students The choice from the JComboBox, clears and updates the groups JList by way of an actionlistener. The ListSelectionListener for the groups JList, then … |
| | Hi Team, Im reading collections and there is a topic called Backed Collections. I could not understand the output below . Please throw some light on it. TreeMap<String,String> map = new TreeMap<String,String>(); map.put("a","ant"); map.put("d","dog"); map.put("h","horse"); SortedMap<String,String> submap; submap = map.subMap("b","g"); System.out.println(map + " " + submap); map.put("b", "bat"); submap.put("f","fish"); map.put("r", … |
| | DatagramSocket SERVERSOCKET = new DatagramSocket(9999); byte[] receiveData = new byte[2000]; while (true) { DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length); SERVERSOCKET.receive(receivePacket); String LINE = new String( receivePacket.getData()); InetAddress iPAddress = receivePacket.getAddress(); int port = receivePacket.getPort(); } Ok I have this right now, I have been googling, yet I do not know … |
| | hi, I have gui with layered pane and four buttons two buttons are above the layered pane and the two buttons are at the left side of the layered pane.the user can controll the size of the GUI but the proplem is that the buttons size doesn't change I want … |
| | hello,my code is below mention, bt in this my eraser button doesnt show me any cursor in drawpad.. thanxxx in adva import java.awt.BasicStroke; import java.awt.Color; import java.awt.Cursor; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.Point; import java.awt.RenderingHints; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.awt.event.MouseAdapter; import … |
| | How to print xls or xlsx file to printer in java ? Is there any API or any reference ?  |
| | Dear All, I am reading Generics, below method is confusing. It clearly mentioned in the Method parameter that it should accept only List. But when i give ArrayList as Argument it compiles. It should be only List right? eventhough Arraylist is an implementaion class. below is the code PLease explain. … |
| | First of all sorry , I am developing an messenger using servlet & jsp . please help me with code in servlet & jsp a user to register via register module, followed by login and use encrypted or normal chat. Each stated function depends on its own module. The encryption … |
| | It is relaed to the thread i posted a while ago. Before I edited the model of my table, it was working properly, but when i added some columns thats when the problem came out. Everytime i click the button that will open this window, it goes blank. Only a … |
| | Hi !! I am having a technical problem to run the code of servlet ,jsp and jar file .can you plz tell me how to put these in diferent folder to execute it..plz plz plz tell em the folder arragement to execute j2ee project.. Plz help i need help...  |
| | public static String DecBin(int nbr) String resultat=""; String decbin=""; //String temp; int rest; //temp=""; while(n/2>0) { rest=n%2; //temp=temprest; String rest1=Integer.toString(rest); resultat=resultat+rest1; } for (int i=resultat.length();i<resultat.length()-1;i--) decbin=String.valueOf(resultat.charAt(i)); return resultat; |
 | Alright, so I have been coding a Ceasar Cipher in Java and I have the encrypting working, However, I cannot seem to find my problem decrypting. Here is the code, I thought just by revearsing all the operations it would decode it, but that doesnt seem to be the case. … |
| | I am planning to create a table where everytime i add a row, a checkbox inside the table will also be created, will that be possible? And i am using window builder. If it is possible, can you give me some instructions how to do it? I did my research … |
| | Write a program that simluates a game of dice. In this game, players take alternate turns rolling two dice. On each turn, they record the sum of the two dice and add this to their total. If a player rolls a doublet (both dice have the same value), then the …  |
| | I have recently shifted from c# to try Javafx2. I am also new to this forum. I have been stuck trying to implement internal frames in Javafx. I stumbled upon this link: http://stackoverflow.com/questions/17673292/internal-frames-in-javafx I have managed to add jfxtras 8 jar file to my project as well as in scene … |
| | import java.awt.*; import java.applet.*; public class Neko extends Applet implements Runnable { public static void main (String args[]) { Image nekopics[] = new Image[9]; Image currentimg; Thread runner; int xpos; int ypos = 50; public void init() { String nekosrc[] = {"right1.gif" , "right2.gif" , "stop.gif" , "yawn.gif" , "scratch1.gif" … |
 | I'm trying to implement an algoirthm descirbed here: http://pub.uni-bielefeld.de/luur/download?func=downloadFile&recordOId=2497720&fileOId=2525546 The purpose of that algorithm is to create a concept hierarchy based on a document corpus. For instants, a "Dog" concept would be a child of the "Animal" concept in such a hierarchy. To the point, I've come accross a peice … |
| | this front page: Form.jsp <html> <head> <title> Data Inserting Form </title> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"> </head> <body> <h1>ENTER THE EMPLOYEE DETAILS</h1> <form action="./Insert.jsp" method="post"> <table cellspacing="5" cellpadding="5" border="5"> <tr> <td align="right">Employee Name:</td> <td><input type="text" name="EmployeeName"></td> </tr> <tr> <td align="right">Employee_id:</td> <td><input type="text" name="Employee_id"></td> </tr> <tr> <td align="right">Nationality:</td> <td><input type="text" name="Nationality"></td> </tr> …  |
| | I am using NetNeans I have a JPanel that is supposed to show some already input data along with a progress bar while the remainder of the program carries out some lengthy processing (about 1 minute long). Once the processing is done, this same JPanel is supposed to be updated … |
 | I think I have a cluster of a mess here and was wondering if someone could help me in the right direction. I am trying to write a small program that will calculate the gain and/or loss of the sale of stock. The program will ask the user for the … |
 | Hello, im trying to get the answers from the secound array but it takes just the last question and answer hers is the code: search.setOnClickListener(new View.OnClickListener() { String[] questions = { "http", "arp", "asd" }; String[] answers = { "HyperText Transfer Protocol", "Advanced Research Project", "asdasdasdasdasdasdasdasd." }; @Override public void … |
| | I have just started trying to learn Java, and i am currently following a tutorial series on youtube([Java tutorial by Derek Banas](http://www.youtube.com/watch?v=rGlJiUO-dZA)) it seems like a good series so far! but i have been going along with him and typing it out, then afterwards replacing my copied code with his … |
| | Hi Team, Im reading Collections. It is mentioned that while intialising priority queue, it uses natural ordering by default. But my output is not like that. Below is my code and output. public class BackedCollections { public static void main(String[] args) { PriorityQueue<Integer> pq = new PriorityQueue<Integer>(); pq.offer(3); pq.offer(1); pq.offer(5); … |
 | Hello, I have looked at an example of `GridBagLayout` (JamesCherrill you must be thrilled : - )!!) and there are a few things that are not entirely clear to me. First here is the code taken from deitel and deitel “Java how to program”, chapter 25: // Fig. 25.21: GridBagFrame.java … |
| | create aprogram that will identify seat plan for an airplanewith availables columns and 20 availables rows. |
| | Hello friends. I am having problem with displaying japanese characters into eclipse console. I use eclipse IDE. And I have two properties files. one for default english text, and second has japanese text. which is not correctly displayed when normally opened. I have used ResourceBuilder and Locale class (JDK 6 … |
 | on click of an href i want to build a dynamic link and open the same in a new browser window using java. out.append("<A href="displayLinkDetails.do"/>Sample Link</a>"); (i want be able to send parameters as part of the action) currently the control is in java file. As im using a seperate … |
| | hi guys, iam workin on an application that calculate the income for certain diving centers, i using the SQLite database, i developed a database with 3 table the first one for user input, the second is to hold daily income, and the third for weekly income. i've a problem when … |
| | Hi Team, I am working on Collections and in order to Sort ArrayList of Objects of a Class based on their instance variable, it is mentioned in book that I need to OverRide CompareTo Method. compareTo Method works fine but Iam not getting the clear idea of its sorting logic. … |
 | Hi Friends, I am working as a programmer in one bangalore based software company, interested to get some freelancing website projects. Plz suggest any firm that provides projects(software development & website development) to work from anywhere or any site that i can get freelancing work to do. I can handle … |
| | Hello guys, I'm workin on an application that is supposed to be generating certificates. Here are the steps: 1- input certificate data 2- generate certificate number 3- create the certificate and save its data in the database i have a table in the database which will hold certificates. The database … |
| | hi, its like this i did c++ at my school level for almost 2 years....its been 6 years since i have done any programming.....due to college studies......now i want to move to android development......for that i need to learn core java(j2se).....its been one month i have been doing j2se.....covered oops,classes,objects,inheritance,excepti... …  |
| | I have just upgraded my web application from spring version 3.0 to spring 3.2.6. I am using Maven, DWR 2.0.2 and Spring AOP in this web application. All my configuration is XML based, I am not using annotations. When I upgraded my configuration files to spring version 3.2.6. I faced … |
| | I am trying to add new spinner below old one dynamically with click of a button. Also, I am adding button on the side of spinner dynamically. My problem is the spinners and buttons are added on top of each other. How can I add new spinner at the bottom … |
| | My problem is when I open new activity when pressing button an error accoutred "Unfortunately, ISPcheck has stopped". Here is my MainActivity.java button click event code: public void btnLogin_OnClick(View view) { startActivity(new Intent(MainActivity.this, PersonInfo.class)); } Here is button xml code in activity_main.xml: <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="تسجيل الدخول" android:id="@+id/btnLogin" android:layout_marginTop="72dp" android:textColor="#ffffff" … |
| | Hi all. What im trying to accomplish is to get strings from within a string. These strings are seperated with "//*//" an example would be String ExampleString = ("//*//helle//*//goodbye//*//1965//*//this is an example//*//the end"); then I would like to seperated into seperate strings. hello goodbye 1964 this is an example the … |
 | Hie guys I am prety new to JSF and Iam working on some peice of code. I am using primefaces components and JSF backed beans. Here are a list of my questions; 1. Is there a way of running a method each time a page loads. 2. During page load … |
 | Write a program that will swap two values stored in location X and Y. For example if the initial values were X=2 and Y=5 then after the execution of your program the stored values should be X=5 and Y=2. in mariesim |
| | ClassNotFoundException:com.mysql.jdbc.Driver  |
| | Hello, me again :-). This time I need to build a small calculator-like GUI, like this:  This time I thought I'd ask a few questions before I start building it! 1)In terms of layout, I was thinking to use the GridLayout again: one for the text field and … |
| | Hi, I am making a song player in java with playlist functionality. I got my mp3 songs running all right. What i basically do in my player is search a folder for mp3 files and then add all to the playlist. Till here, it's fine and doing good. But the … |
| | hello, i am trying to set the allignment of my slected data which i get in my text area.. can anyone help??? |
| | hi, I want to display only the user id and the name in jList and when the user select something from the jList detailes of that person will be display in a lable can you explain to me how to do it.. I've managed to display all the deatiles of … |
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