36,051 Topics
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| | i am new to Java and programming i just joined faculty of computer science and i am doing good but i think that all what i had until now isn't enough for my curiosity what should i do to master Java and become a Java expert and increase my programming …  |
| | ok so what i am trying to do is create a random int and save it into an arraylist and sum up the contents of the array list. then ask the user if they would like to roll again. any point in the right direction would be appreciated. so far … |
| | public class MyDeque { private int maxsize; private int [] queArray; private int front; private int rear; private int nItems; public MyDeque (int s) { maxsize = s; queArray= new int[maxsize]; front=0; rear=-1; nItems=0; } public void insertRear(int j) { if (rear==maxsize-1) rear=-1; queArray[++rear]=j; nItems++; } public void inserFront (int …  |
| | Hi again............ I have got something new that........... i was using MS Access as the database with my JAVA Japplet.... In my applet i used JTextArea to display the output ..... The output to display is fetched from the database which is connected using DSNless connection as with connection string... … |
| | Hi I've been told that for the next term i must do a programming project of my own choice. Any ideas on how I can impress? |
| | Hello Everyone !! I read a program to create a simple moving banner from my book Java Complete Reference by Herbert Schildt, and after a few days I tried to make it myself from what I understood then.....but unfortunately mine doesnt work properly, even though I think I've done everything … |
| | hi i m mateen frm india i have a problem with my java compiler i want to know how to set the path of compiler and how to execute the program i have already installed the java software someone answer to my question and help me out  |
| | Hello I am trying to use a MySQL database and connect to it using a Desktop App. I need to have it embedded and I am using netbeans and I am connected to the database I am also in the admin console for glassfish. I tried setting it up once … |
| | Hi people, Im trying to handle an exception in my servlet by res.sendRedirect to another page..but it is not redirecting to the page i want, instead its going to a HTTP Staus 500 error page detailing the full stack trace..can someone tell me what might be wrong here, ive attached … |
| | Hi, I'm trying to do something pretty straightforward (I think) but it's not working for me for some reason. Basically trying to create an object with an ArrayList as a attribute but i keep getting numerous errors saying '<identifier> expected', '; expected'. My code is as follows: [CODE]import java.util.ArrayList; public … |
| | This is my first working java game. I am thrilled it works. What I want to know is.... what can I do to improve it? I would like to use a simple datebase to collect every possible combination of computer names. I would like to collect new information every time … |
| | i have this problem with regards to java data the problem accepts input number and then output the sum of the square from 1 to the n(1 to the no. input) thus, if the input is 4 the output should be 288 because: 1 raise to 1 + 2 raise … |
| | Hi I'm a java intermediate student, I have been studying java for two years. I just wanted to offer my help to those students that are currently struggling with java in general, or those who need help on an assignment. Lately I have been ahead of my class so I … |
| | hi I use log4j framework for logging my program. i insert log4j.xml in my project an test it. everything was ok and logfile correctly was put in path. but when i made jar file and copy it to linux and run it it return error [CODE]log4j:ERROR Could not open [log4j.xml]. … |
| | Ok heres the problem Im working on a final project for a java course and one thing is blocking my path. import java.util.*; public class Controller { public List<CrewMember> list = new ArrayList<CrewMember>(); public void addItem() { CrewMember cm = Academy.load( MenuUtil.getAString("Enter the role: "), MenuUtil.getAnInt("Enter the id number: ")); … |
| | Hi, I'm a bit new to java and I would like to make a program that save's and load the saved data that the user had inputted in my java program. For example I done a sort of a Bank System and when I close my program and restart it … |
| | Hi basically I'm current doing a connect 4 program that consist of 3 separate programs Connect4Model, Connect 4 Column and Connect4View... I'm trying to compile and run my connect4View program but for some what reason I'm unable to do so. Below I have supplied the code for the 3 programs. … |
| | hi, i just need to pass the value from my html page to my servlet...it is not working...pasting the code below.. [CODE] <html> <head> </head> <body> <form name="frm" method="GET" action="http://localhost:8080/connect/ConnectServlet.java"> <input type="text" name="txtName"> <input type="submit" name="btSub"> </form> </body> </html> [/CODE] my Tomcat is running and i am able to run … |
| | Hi guys.. I am having some problem with snake game project using JAVA Applet. I already have the sour code of a snake game from my friends, but I failed to make it functions probably under a JApplet. I need to do a similiar UI like click a start button. … |
| | Hi i just have a question, i was doing the pass midterm the question is asking that " Write a class Jacket, which has a boolean instance variable isReversible and a static int variable numJackets. There are no methods " correct Ans: public class Jacket { private boolean isReversible; private … |
| | Hi guys, i need some help with a project, I need to print a table showing the numbers 1 - 10, thentheir factorials, i also need rthe sum of the numbers and the sum of the factorials:\ Number Factorials ======================= 1 1 2 2 3 6 4 24 5 120 … |
| | I was trying to figure out how to access variable values out of a class. if class x.java hold all the values can class y.java use getClass(??); to get values without making a new class instance(which will erase everything?). then class z.java access it later to get the values likewise? … |
| | Ok, I know most of you will read this and think I am a liar, but I am really just trying to practice with multiple classes and methods. So I picked out a programming challenge from my book to see if I could get through it. I wrote the class … |
| | Hey lads, Firstly apologies for the long message. I just thought it might be easier to explain my issues. I'm doing a website for myself and have been getting some amazing info from this forum. I've moved onto the database part to it. Now, for my website, user can sign … |
| | I keep getting NoClassDefFoundError so I cannot check if the rest of my program works. It works on the school computers but it does not at my house. I set up the path and classpath variables how my teacher told me for derby but it still will not work, any … |
 | Basically, I am having trouble figuring out how to work my if statements. The only one that works is the final statement and that is due to it not having the [CODE]if("#".equals(e.getActionCommand()))[/CODE] statement. So, how should I go about allowing the user to select the quantity in the combobox and … |
| | I am designing a cinema system I want to call a another class which has a arraylist method and then display the elements inside the arraylist. Please help I made two sample classes [CODE]Class cinema() . . . . public ArrayList<time> getTime() { for (Show show : getTime){ } return …  |
| | hi........ can anyone tell me the connection strings to connect JAVA JAPPLET to sql server 2005 database and also the execution of SQL statement in java thanks  |
| | Hi Guys, I am trying to create a game of a two way traffic with a human trying to move between the cars to the other side without being hit by a car. I can detect the collisions, but the main problem is my cars don't move. what maybe the … |
| | Hi I am trying to return a boolean value into another method, but it's not working. [CODE] public static boolean ItemFound(boolean item, String desc1, String desc2, JTextArea txt){ if(item == true) txt.setText(desc1); if(item == false){ txt.setText(desc2); item = true; } return item; }[/CODE] and inside the other method I have … |
| | Hello. Can someone explain what this InitialContext(): is looking for? [code] public JDBCSchoolofdbDAO() { try { Context initCtx = new InitialContext(); Context envCtx = (Context) initCtx.lookup( ModelUtils.getResource("JavaCompEnv")); dataSource = (DataSource) envCtx.lookup( ModelUtils.getResource("DataSource")); } catch (NamingException x) { ModelUtils.log(x); throw new InternalError(x.getMessage()); } } [/code] [code] DAO=schoolAppModel.dao.JDBCSchoolofdbDAO #///////////////////////////////////////////////// # DAO=jsfdb.model.dao.JDBCSubscriberDAO #///////////////////////////////////////////////// … |
| | My assignment is as follow: Create a class IntegerSet. The IntegerSet can hold integers in the range [1-100]. Define one or more instance variables to represent IntegerSet properties and store elements. Additionally, provide the following methods: a. One or more constructors. b. Method void add(int) inserts a new element to …  |
| | Hi, I got this piece of code from this forum and i was trying to modify it so that I can make it dynamic. I modified it a little bit to add multiple collapsible panels. But I need some help. 1. I need to add these panels dynamically. If I … |
| | Dear Guys I want to start creating mobile based applications and i am newbie in this field , where should i start , how to create a simple application jar file which can run on mobile devices , for example a simple interface with buttons , sound handling , graphics … |
| | (Payroll) Write a program that reads the following information and prints payroll statements in show message dialog box. These are the inputs: Employees Full Name (e.g. Mohammed Al Zakwani) Numbers of Hours worked in a week (e.g. 40 hours) Hourly Pay Rate (e.g. 6.75) Federal Tax withholding rate (e.g. 20%) …  |
| | G'day, My problem is not one that is overly complex but i have been unable to find a simple solution to my problem. My problem is that i have my given form with two submit buttons, for which I'm using images. Once i click on the images, how do i …  |
| | I opened my control panel thinking to uninstall un-wanted softwares. but i saw 3 java se's install in my machine. the size of java 6 update 7 (371 mb)>the size of java 6 update 17 (147 mb). why is it so? why 17 is 50% less in size than 7? … |
| | Hi guys, I'm still learning java and to code in general. How would i take a word, open a web browser, and define the word in google ? Is that even possible ? |
| | i'm doing java exercise, their is 6 question and i had done 5. another 1 i tried all the alternative but still error. this code: [CODE] class __(1)__ { static ___(2)___ int MIDTEST = 30; public static void main(String [ ] args) { int a=15, b=10, quiz, ___(3)___; Course ____(4)___ … |
| | there are 3 classes letterd, letteru, letterh. each class uses loops to print asterisks in the form of letter d, u, h. each letter has two charateristics width and height. the constructor of each class accepts two integer parameters that correspond to height and width. each class also has a … |
| | hi im am working on assignment and i would like to give a Jbutton an integer value i have delcared the buttons using an array (8 buttons in total) but i would like to give each button a diffrent value eg button 1 = 32 button 2 = 44  |
| | Hello I want to implement this function: boolean check(String str,String exp) that gets a string, and an expression and see if it mathches. But (!), according to a format by '*' (maybe similar to the SQL LIKE statement, but with * instead of %). Examples of tests of this function … |
| | Regarding the title, i want to know the exact way to writing text data to a text file on a web server using http connection in J2ME. I tried the way as below: OutputConnection connection=)OutputConnection)Connector.open("http://localhost/message.txt;append=true",Connector.WRITE); OutputStream out=connection.openOutputStream(); PrintStream output=new PrintStream(out); output.println("Testing"); out.close(); the codes have no problem and no exception. … |
| | Hey guys, I've been looking around the web but can't find a definite answer for this one. I have a program I'm making and I want to cut down my lines by using an array and just have it create my lines for me. I have this set up [code] … |
| | [code] import java.util.*; public class Homework11 { Scanner input = new Scanner(new File("keyvalues.txt")); Map<String, Integer> wordCountMap = getCountMap(in); for (String word: wordCountMap.keySet()) { int count = wordCountMap.get(word); while (input.hasNextLine()) { line = input.nextLine(); numLine++; Scanner word = new Scanner(line); while (word.hasNext()){ String nextWord = word.next(); numWord++; numChar = numChar + … |
| | Hello there. It's me again. I think I got most of the Pseudorandom code fixed but there's a problem. [CODE]// Name: Wesley Montgomery // Assignment 1 (Pseudorandom Class) // CS 211 (5:30 PM-7:40 PM) // Craig Niiyama // This class creates a Pseudorandom Number as well as returns the number … |
| | In jboss, if i use localhost to access the application then its working and if i use ip address its not working why !!!!!!!! can anybody suggest ? |
| | I have a Photoalbum class and a Photo class. The Photoalbum class obviously holds a bunch of photos in an array. Each photo has a subject, location, date, and path. I need to make a method to search for a a photo with a certain String path. I tried: [code] … |
| | [CODE] maxDays = calendar.getActualMaximum(calendar.DAY_OF_MONTH); System.out.println(maxDays); [/CODE] When looking through the javadocs it seems like this would work but it apparently doesn't. Any help on figuring why it doesn't or another way would be appreciated |
| | Hi I am Making a horse racing application .... and the concept is when you enter a number in the textfield and select a horse(one of the 8 jButtons) the application will randomly select one of the JButtons and if the Jbutton is the same as the one selected by … |
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