36,051 Topics
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| | I have to find out how many times the [CODE]createPerson()[/CODE] function is called This is my Main.java file [CODE]import java.io.IOException; public class Main { public static void main(String[] args) throws IOException{ int i; Student[] totalStudents = new Student[10]; Student.create3Persons(); Student.create2Persons(); } } [/CODE] this is my student.java file [CODE]import java.io.*; …  |
| | Hi people, well i am a computer science student and my dissertation title is "An Agent Based Tutoring System" and i am using JADE to do it and MySQL for the database. Can any one help me in doing it?? I want you people propose me some ideas so as … |
| | Hello everyone on daniweb!:) I'm trying to make a programme which will move a picture to the sides when pressing the right or left arrowkeys. I did successfully put a picture in and I was able to change the side coordinates(called "side" in the programme) to make the picture move. …  |
| | Hi I am writing one simple program for upgrading my knowlegde from C# to Java but I am failed to attach ActionListener to JComboBox which is added to a cell of JTable at run time. Actually I want to perform update operation and delete operation on selecting Update or Delete … |
| | Hello there. I am trying to create a loop, which will move an objects position to a certain spot, based on a random number generator. Here is the code I have so far; [CODE]public void left() { if (this.getColour().equals(OUColour.WHITE)){ while(this.getPosition() !== this.setPosition(this.getPosition() - getRandomGenerator().nextInt(5) + 1)){ super.left(); } } }[/CODE] … |
| | can you help me to clear the error? [CODE]import java.util.*; class Node{ protected Object data; protected static ArrayList child; protected Node next; public Node(){ next = null; data = null; child=new ArrayList(); } public Node(Object d,Node n){ data = d; next = n; n.child=new ArrayList(); } } public class Tree{ … |
| | I need help in my Connect Four program. Specifically in placing the user's input on the gameboard & also checking horizonallty, vertically, etc. [CODE]/* * ConnectFour program */ import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.Scanner; public class ConnectFour implements ActionListener { JFrame frame; JPanel contentPane; JButton displayMessage; public ConnectFour() … |
| | Hi, Do anyone know a memory leak profiling tool compatible for java 1.4.2. Your help is much appreciated.  |
| | hai everybody am unable to find full path of file. am using following code to import the file. in internet explore am getting full path, but in firefox(version-8) i'm getting only the file name instead of the entire file path.please help me to find full path of file.. <td> <input …  |
| | What’s the point of having a private constructor?  |
 | Hey guys, I am trying to figure out how to write out this java Program, I am using JCreater, and I am teaching JAVA to my self if you guys can help and show me a couple of the programs that I am doing I think i will be all …  |
| | I am making a networking application using sockets for a local area network. How can i make the client side of the application search the network for the server socket? Right now i am getting the input from the user itself about the IP address and Port of the server. |
| | Hey again. Trying to add elements to a DList, this happens when I try to add the second car (500, Porsche). The whole insert algorithm sucks and am strongly considering trying to figure out a better one. This is what shows up in the console: Enter name of file with … |
| | pButtonarray [x] [row].putClientProperty ("x", new Integer (x)); I'm using a version of java that doesn't have method overloading for putClentProperty so i have to type new Integer as seen above, and this all works perfectly now I'm trying to assign a boolean to the array like so pButtonarray [x] [row].putClientProperty … |
| | Hi guys - I need to write a program that reads in a user-input integer and tells if the number is prime or not. I've written up this code so far: [CODE]class primenumber { public static void main(String[] args){ int num = 10; int i; for (i=2; i < num … |
| | So Im trying to make a Coinstar Simulation and pretty much what it does is it adds up all the money and gives me a total. Im a computer science student learning java for the first time so I'm a bit confused as to what code i should put next … |
 | (This has to be a Java question as it simply works in a txt with a HTML extension....) I have this code: [code] <html><head><title></title></head><body> <form id='formulario' action='index.html' method='post'> <label>Ancho </label><input type='text' name='ancho' id='ancho'><br > <label>Alto </label><input type='text' name='alto' id='alto'><br > <label>Izquierda </label><input type='text' name='izquierda' id='izquierda'><br > <label>Horizontales </label><input type='text' name='horizontal' … |
| | Hello! Chrome browser starts a new process for each tab. Every tab named as "chrome.exe" on windows and on linux "chromium-browse". For example: [url]http://www.ghacks.net/wp-content/uploads/2011/01/sys_manage.png[/url] I need to list all tab title names of opened processes. Is there any function which gets title (or name or summary or ...) of a … |
| | Hi, i have netbeans 6.0.1 but when i just creat a file it gives error even at the line which comes by default. For example @Remote or javax.ejb i have uninstalled and installed it again than to the previous installtion effects remains as it is. |
| | Hello, I am programming for my Robotics team, and I have to write code for a dashboard, including different camera feeds and setting up rows or columns for the different elements. I am quite new to Java, but I gotten through most of it except for the rows. I can't … |
| | Hey Putting this code: [code] System.out.println("Hello"); BufferedImage bufferedImage = new BufferedImage(620, 420, BufferedImage.TYPE_INT_RGB); System.out.println("Bye"); Graphics2D g2d = bufferedImage.createGraphics(); g2d.setColor(Color.black); g2d.fillRect(0, 0, 620,420); g2d.setColor(Color.yellow); [/code] It throws a java.lang.OutOfMemoryError: Java heap space error not displaying the bye. I dont understand as my BufferedImage is nothing at all (simple 620 by 420). … |
| | hi how to i create a a local HashSet<video> and an InventorySet |
| | i want to divide a matrix of n x m in smaller equal sized square matrix of size p x p.. |
| | hi could someone help me in giving a tutorial in learning how to write testcases in java. would preffer in netbeans if eclipse dosen't matter, thanks in advance |
| | I wonder why they use private constructors.when I was navigating java documentation I found alot of classes with private constructor.Would you tell me what are the benefits of writting them. |
| | Hi, I am trying to make a simple snake game, but whenever I try to attach a body piece it appears randomly on the screen rather than behind the head. Also, the body doesn't exactly follow the head either. I checked the code over and over for any problems but … |
| | can we pass condition of if statement as an argument in any language????????? [CODE]class Matrix { static void loop(char a,char b,char c) { int a[][]=new int[3][3] ; byte i,j ; for(i=0;i<3;i++) { for(j=0;j<3;j++) { if(a b c) System.out.print(a[i][j]+"\t"); else System.out.print(" "+"\t"); } } public static void main(String ar[]) { loop('i','>','j'); … |
| | Hi! I'm looking for a way to only run a few tests instead of all existings JUnit test cases in our automated build, which uses ant. I can't add @ignore annotations in the code since it would take to much time. Is there a way to define which test cases/classes … |
| | I have the code to print prime numbers but I can't figure out how to print the numbers 8 to a row. This is because I have to find all the prime numbers <200. [CODE]import java.util.Scanner; public class PrimeNumbers { public static void main(String[] args) { Scanner input = new …  |
| | okay so we have group program and my job was to make it only fool proof which I've done most of it and now my group wants me modify/change the program that we talked about and they chose me to do it even though I Said no and I can't..a … |
| | hello, all I am trying to insert rows from Excel sheet into SQL database by browsing Excel file in java(JSP). I can insert rows using ODBC connetion. But using odbc user should give DSN in program. I need to insert rows by Browsing file to make it user friendly.i.e user … |
| | hi, I heard there is a plugin for eclispe that you can use to produce the gui part of application, but i dont know the name. has anyone used it? is it easy to work on then writing the gui yourself? thanks |
| | hello all, I am new to J2ME development rather this is my first code i have written in J2me for encryption and decryption using bouncycastle . It is giving the error which i am unable to find solution for... plz help... :sad: This is the error it is showing in … |
| | I am new to programming, so please accept my apologies if this question is simple. I'm creating a program that generates a random maze depending on the starting point you enter. I did every thing but when I execute the program, it doesn't show the path to get out from … |
| | Hello so the code i need to write needs to read a text file and print as many random names as a user tells it to. so i have everything but cant figure out how assign a line of the file a number so i can just come up with …  |
| | I'm running a problem with install the junit to the computer. I already download the junit to my computer. But how do I install it? I try to google it, but I don't understand their instructions. I remember in the class, my teacher do a lot of copy and paste … |
| | hi all i have to implement arraylist<node> base tree(one parent may have more than two children). i did not work with node can you help me to create the tree |
| | I need to check whether the entered numbers are valid, if not output a message. this needs to be done with using exception handles. i have tried the following but does not work. i get the error : cannot invoke hasNextInt() on the primitive type int [CODE]input = in.nextInt(); if …  |
| | I want to write some text to JtextArea of class1 from class2 . How can i do that? Thanx in advance for any suggestion |
| | I am developing a dynamic page in that some text and images should be displayed together...! But before that i had tried to get nevigation page for whole application. In that i am getting same problem, Image is not displayed...! What i should write in src=" ????? " I have … |
 | I hope u havnt taken it filter in java :-), i want to create a filter for internet which do content filtering on some keyword, but dont know how to start , any body just an hint please..... Thank you |
| | For the program I have the user entering their current distance and bearing from specified point with the programme then returning the nearest station and bearing/distance to this station. However I also want to include what line the station is situated so I know the code will be something along … |
 | Hello, I'm working on a Moving Ball project and on the moving ball there are random number so i need to use the keyboard or the mouse to click on the number printed on the moving but i dont know how to go about it. here is the code below: … |
 | I am learning java through a book. After finishing each chapter, i work out problems given at end of each chapter . when i tried to solve a problem , i could not frame the logic exactly. Please help to solve following exercise : Write a program to find the … |
 | Hi everyone, I'm trying to do exercise from the book I'm reading at the moment. But, I don't seem to have understood the last part of the question. I'd greatly appreciate anyone explaining the question to me. I have done all parts of the question except the last one which … |
| | Can anyone suggest book for beginner In EJB 3.0 Like Head first (there is Head first Ejb but its 2.0). Any suggestions would be appreciated. |
| | Hey all, I am having an issue with a NOClassDefFoundError. I am new to creating MIDlets so I am working with a textbook, Kicking Butt With MIDP and MSA and I think it's the most recent edition… not sure. At any rate I am working with the section on push registry … |
| | Admittedly I am only a beginner at playing with java but I'm pulling my hair out trying to understand something I thought would be easy, and it probably is. Trying to write code that randomly selects from 3 preloaded arrays and spits out the results. Mechanically the code seems to … |
 | This program determines the grade average, raised grade average, of individual students and all students. The program takes scanner input. In the scanner, the number of students, the number of grades for each student, and the grades of each student are entered. Ultimately, I need to print out each student's … |
| | hello everyone i was writing a program which is used to convert pdf to text.it is work fine when i am convertin a simple paragraph or table into text but it gives error while convert another file which is send by other and contains 1000 's of pages can you … |
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