35,618 Topics
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| | I have this Code... ifsDAO.java [CODE]package source; import java.sql.*; import java.sql.SQLException; import java.util.*; public class ifsDAO { private Database database; public ifsDAO(Database database) { this.database = database; } public List<ifsBean> list() throws SQLException { Connection connection = null; PreparedStatement statement = null; ResultSet resultSet = null; List<ifsBean> ifs_array = new …  |
| | Hello there I am using RAD and there is some problem with my websphere its not publishing anything here is the error ........................................................................................... [ATTACH]24189[/ATTACH] ........................................................................................... Tagged the screenshot of y problem please reply...... |
| | I have a school project and what is needed is to Write a program that prompts the instructor to enter the 10 grades of midterm 1 and store these numbers in an array. Next prompt for the 10 grades of midterm 2 and store these numbers in a different array. … |
| | hey, so I am just starting java3D, and I am running into some pretty basic problems... I started a tutorial online (from [url]www.java3d.org[/url]) and the first sample program is: [CODE]import com.sun.j3d.utils.universe.SimpleUniverse; import com.sun.j3d.utils.geometry.ColorCube; import javax.media.j3d.BranchGroup; public class Hello3d { public Hello3d() { SimpleUniverse universe = new SimpleUniverse(); BranchGroup group = … |
| | hi below code is an example.I hav couple of questions 1)The highlighted bold red code(myParrot[0]...)can it be simplifyed? 2)Can i use random to generate a given set of numbers?How? [CODE]public class Bird{ public static void main(String[] args) { int[] myParrot = new int[3]; [B][COLOR="Red"]myParrot[0]=1; myParrot[1]=2; myParrot[2]=3;[/COLOR][/B] for (int feature=0; i<myParrot.length; … |
| | I was told to use a while loop and call the nextNumber method until the input matches the corresponding fibonacci number, i.e. an input of 4 would give fib(4)=3. I'm getting fib(4)=1. Here is my code: [CODE] /** Class used to generate a Fibonacci number with a given input */ …  |
| | a class can have only one constructor??? thanx regads  |
| | Hi everybody. I'm trying to display web page that located in my computer or just (google web page). But everytime I'mgetting nullpointer exception. Please help me to figure out the problem. here is the absolute path that I'm using: [CODE]serg@serg-PORTEGE-Z835:~$ find $PWD -type f -name test1.html /home/serg/Projects/java/GUI/src/its/TestData/test1.html [/CODE] But the … |
 | Hello, I've got this problem with an intro to Java class. To lay some background down, the professor teaches the 'theory' behind java, and nothing of actual code, so my knowledge is very limited here. The reason I'm here is I can't discern for the life of me how to … |
| | So basically I have to import a file of names and then be able to sort them alphabetically I've managed to import the file using the followig code [CODE] import java.io.*; public class Name{ public static void main(String[] args)throws IOException{ String contents; File f = new File("names.txt"); FileReader fr = … |
 | I'm getting this error variable might not have been initialized on ch2 and ch3: [CODE]import javax.swing.JOptionPane; public class calculatorJava { public static void main(String[] args) { String ch, ch2, ch3, add1, add2, sub1, sub2, mul1, mul2, div1, div2, choice1, exp; int chans, chans2, chans3, addo1, addo2, subO1, subO2, mulo1, mulo2, …  |
| | I'm making a website and of course want to incorporate memberships and logins, etc and while I understand the theoretical application of salting and hashing a user-inputted password to save the encrypted pass in my database, I'm not sure on the approach... What I would do is get the hashCode … |
| | As i said in the title",. i dont know what was the missing",. (i will just attach the jar file) please help"., by the way", it is a game named sokoban. |
| | hi there, i have this server code that send the received message from one client to all the other clients, including the one how send the message [CODE]public class Chat extends Thread{ static LinkedList<PrintStream> sll; Socket cs; PrintStream ps; public Chat(Socket cs){ this.cs=cs; try{ ps=new PrintStream(cs.getOutputStream()); sll.add(ps); this.start(); } catch … |
| | Hello! I was given the task to finish writing the definitions of the Treeset class methods. I'm currently at the [B]headSet[/B] and [B]tailSet[/B] functions and quite stumped. Here's what they look like currently, with no logic: [CODE]@Override public SortedSet<E> headSet(E before){ SortedSet<E> set = new SearchTreeSet<E>(); headSet(root, before, set); return … |
| | Hi, I have a problem with some resource files (i.e. .txt) which I have created in the project under let's say com/myapp/resources. I have a class created: com.myapp.util.MyClass which reference a file.txt located in resources folder: [CODE] MyClass.class.getResourceAsStream("../resources/file.txt"); [/CODE] The project is created in eclipse. After I export the project … |
 | Any tips on how to connect them? COmments are highly appreciated. Thanks! |
| | Hey everyone, I'm trying to make a button have an image, it used to work but for some reason, now it doesn't. This is the error: [COLOR="Red"]Exception in thread "main" java.lang.NullPointerException at javax.swing.ImageIcon.<init>(Unknown Source) at Main.createImageIcon(Main.java:109) at Main.<init>(Main.java:82) at Main.main(Main.java:103) [/COLOR] I see that the error is the: [CODE]ImageIcon NewFileIcon … |
 | I am wondering if there is a way to make a MySQL database using my java program without actually having a defined username for the admin. for example I would make a program that you could install on all computers in a network that connect to a newly made database … |
| | Hello everyone .. I am new to this excel reading !! Introduction: I have a link to a txt-file(or doc file) in excel file and i need to read a data present in the linked file. I can read normal text present in excel file.. Problem : but not able … |
| | I am attempting to run a junit test against a JAX-WS service method using a simple client class and compiled generated sources from ws-import. When the test is run through surefire while doing either test or install I get the error java.lang.NoSuchMethodError: com.sun.xml.ws.api.model.SEIModel.getJAXBContext()Lcom/sun/xml/bind/api/JAXBRIContext; but when I inspect the xml in … |
| | Hi folks, Right now I'm trying to learn about multidimensional arrays. I'm currently working on an assignment where I have to store data in said arrays. However, the input format is funky and surpasses my knowledge of how I can store it. The problem is generally along these lines. X … |
| | Hi. Can somebody help me? I am trying to create a program that reads random line from a file and displays them. My problem is, it keeps repeating the same line after a few tries. i have 8 total lines from my file... this is my code so far... [CODE]public … |
 | Hello Friends, I have one project in Java but the exe file cant show the system.out.println messages. I want to create a jar file in such a way that the error of file e.g. abc.java should be viewed when I click the jar file. is there any possible way.... |
| | How did you learn Java? I just watched the basic and intermediary video tutorials from thenewboston.com and I'm still not 100 percent. I've moved onto the android application development tutorials which deals with a lot of java, and I still don't totally understand it. It started off with a bunch … |
 | Hi mate, I am doing a mini program in java that let us look up word as a dictionary. I tended to use database to store words and their meanings, but my teacher suggested me using file (or xml). I chose using file (write a vector to file). Can u … |
| | Hi, I'm building a battleship game that has multiple sessions over an apache server. It's a server/client containing servlets & jsp's. Let's say i have a jsp page that shows all the boards, for each session i want this page to be refreshed as soon another player makes a move. … |
| | Can anyone give me an example iniitialing a non zero value using arrays If u cant give an example pls dont respond.Thanks:) |
| | i am using a java program and i need to store two sets of data (radius and thickness) there are elven of these i need to store. my question is firstly how to store these into an array without having to do user input each time. then say i need … |
| | I'm trying to get my JPanel (JFrame?) to resize itself to fit randomly drawn shapes. I have a shape superclass and right now I'm working with my line subclass. Everything is working fine except I can't figure out how to make the shapes fit the size of the JPanel. Should … |
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