36,051 Topics
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| | So I have to create a guessing game to be played between 2-5 players. That part wasn't very difficult. I am however having LOTS of trouble with the try...catch statement. I have to have to make the program have a try catch so it doesn't throw an error if the …  |
| | I have a web project I've been working on in my free time using mostly jsp. It's currently set up so that if a user clicks the login button it takes them to a check-login servlet which will return whether it's a valid login or not through a session.setAttribute("loginstatus","Valid"). Everytime … |
| | [INDENT]:icon_lol:Suppose there is a (method) [U]call stack[/U]; An [B]exception[/B] has occured in a deep level but not handled there yet; So the corresponding [I]finally block[/I] at that level is executed first and then [B]it[/B] is thrown to be propagated up through the [U]call stack[/U] and at each step if [B]it[/B] … |
 | [CODE] public class Planet { private String planetName; private int travelDay; public Planet(){ planetName = "Earth"; travelDay = 365; } public Planet(String planetName, int travelDay){ this.planetName = planetName; this.travelDay = travelDay; } public void setPlanetName(String planetName){ this.planetName = planetName; } public String getPlanetName(){ return planetName; } public void setTravelDay(int travelDay){ … |
| | [INDENT];)Suppose a method is called with [COLOR="Red"][B][I]formal[/I][/B][/COLOR] parameters of [COLOR="Red"]supertype[/COLOR] and [COLOR="Red"][B](1)[/B][/COLOR]the [COLOR="Red"][B][I]actual[/I][/B][/COLOR] parameters of [COLOR="Red"]subtype[/COLOR]; Now the method declaration is [COLOR="Red"][B](2)[/B][/COLOR]overridden and overloaded in the [COLOR="Red"][B](3)[/B][/COLOR]previous same [COLOR="Green"]class[/COLOR] as well as in the [COLOR="Red"][B](4)[/B][/COLOR]overriding [COLOR="Green"]subclass[/COLOR]. :icon_rolleyes:An [COLOR="Green"][B]object[/B] [I]reference[/I][/COLOR] is used on which the call is performed; Here the [I][COLOR="Green"]reference[/COLOR][/I] …  |
| | Why do you think the Java language chooses to treat file data as a stream rather than as a single object? |
| | [CODE]<% String Username = request.getParameter("USER_ID"); String Password = request.getParameter("USER_PASS"); String Mobile = request.getParameter("Mobile"); String Address = request.getParameter("Address"); String sql = ""; { int LoaiSubmit; String DriverName; String connectionURL; Connection con; Statement stmt; LoaiSubmit = 0; LoaiSubmit = Integer.parseInt(request.getParameter("LoaiSubmit")); DriverName = "oracle.jdbc.driver.OracleDriver"; connectionURL = "jdbc:oracle:thin:@"; con = null; stmt = null; … |
| | HI, Iam trying to develop SMS Application by using java communicaition API. iam getting error msg like com.sms.samples.SerialConnectionException: Port currently owned by SMSConnector Iam aware that by using modem we can develop an application. But how to develop with out using modem.what are the requirements required. plz help me ..... … |
| | Hello all! I'm helping my employer redesign their database system. They're currently using MS Access exclusively, but they are updating their computer systems to Apple machines and want to convert to a standalone application to access a background database (e.g., a standalone Java program using JDBC to access a background …  |
| | I'm new to Java and while trying to add a text area to the applet, found the textarea uneditable, and while trying to add the scrollbar to the textarea, found the applet will not be started. Code as below: [code=java] import java.awt.*; import javax.swing.*; import java.applet.Applet; public class AppletEditor extends …  |
| | sir -- i wrote in the jsp for remving junk character from the application [code]<% request.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); %>[/code] but still some page show the junk character what should i doo... |
| | Hello! I am writing a simple java application which executes another command with "sudo" (on Ubuntu). My application works properly when i start it with "sudo my_java_application". But if i start it without sudo it does not works. And it does not ask me for password. It gives error when … |
| | Imagine a windows paint program that draws a square. I wrote some code to do the following: A vertex change may make a square bigger or smaller (or unchanged if the vertex value is the same). You must adjust the other vertices, as necessary, to keep the shape a square. … |
| | Hello, I'm currently working on a small database project with various search algorithms. Right now I seem to be a little stumped. Basically what I need to is to read a huge file of strings, such as these 2 lines: Abram,Smith,70,M,Nursing Unit,324b Ace,Lewis,7,M,Intensive Care Unit,324c I then need to delimit … |
| | Good evening im seeking help with this program, it is in a loop that ends if a negative number is entered, I am trying to get the largest number entered in the do while loop, ive tried creating a temporal variable (temp), but I dont know where to go from … |
| | Hi, I am a beginner so bear with me. I have an assignment in which I have to create an array with numbers and then have a loop with condition to check in which order the user has inputed the numbers. Asc=1, desc=-1, other=0. This loop isn't working, i know … |
| | write a java program that prompts the user to input and integer and then ouputs both the individual digits of the number and the sum of the digits. This is what I have but it is not working when I input a negative number. Why? Need help! import java.util.*; public … |
| | I am currently at this URL localhost:8080/Test/students/Steve The page from that URL displays some info about Steve and a link that goes to teachers. [CODE]<a href="teachers/all">Click to view all teachers</a>[/CODE] When I click the link it goes to localhost:8080/Test/students/teachers/all I want localhost:8080/Test/teachers/all How can I do that? I managed to … |
| | Alright so I have to Save and Load an array, and I am unfortunately running into issues at saving, where it keeps giving me the error[QUOTE]Exception in thread "main" java.lang.NullPointerException at java.io.FileOutputStream.<init>(FileOutputStream.java:186) at java.io.FileOutputStream.<init>(FileOutputStream.java:84) at SocialEventList.saveAppointmentData(SocialEventList.java:41) at Test.main(Test.java:120)[/QUOTE] [CODE]import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.PrintStream; public class SocialEventList { private SocialEvent[] … |
| | What is the usage of JTabbedPane and JPanel and which case we are using the components... Thanks |
| | hi i want to do valiation of text area and database in one of my project the main thing i in database and that values i stored in arraylist and in jsp i used that list object in jsp after that i am not getting how to compare the values … |
| | I need some idea how to correct this program. Though I think I understand the concept, my implementation is wrong. My program only prints the orignal string and does nothing with it. [CODE] public class ArrayStack<E> implements Stack<E> { protected int capacity; protected static final int CAPACITY = 1000; protected …  |
 | Ok, I've done everything I can think of and I've looked around and haven't found anyone else that has run into this kind of problem. Maybe I'm just missing something really simple but I am at my wit's end. Umm... actually, just had an idea, but I'll put this here … |
 | Hi all, I did some basic method overloading program, when I run the bellow program i got output as int long but expected is short long.. can Any one explain me My code is : [CODE]public class MyClass { public static void disp(Long n) { System.out.println("Long "); } public static … |
| | I am trying to get the program to print how many of each letter of the alphabet is in the bible but it is throwing and error. I am just using a small part of the bible until I get it to run properly. Please help. import java.io.File; import java.io.FileNotFoundException; … |
| | The last do..while loop only prints the 2^n of the number entered and n is user input. It does not print all 2^n from 1 to what ever value user inputted. [CODE]/** * * * @author * @version */ //import Scanner utility import java.util.Scanner; public class Loops { public static … |
| | The problem I am trying to solve is Write a program using fork() to compute average of N numbers. The parent process forks a child process that takes input from the user, adds all the numbers and returns the sum and the count of numbers to the parent process that … |
| | I am trying to make a Fibonacci sequence program to display up to the nth term(only positive numbers). For some reason it doesn't seem to work. [CODE]import java.util.Scanner; /** * * @author Toby */ public class Fabonnacci { /** * @param args the command line arguments */ public static void … |
 | Dear Daniwebbers, I have a problem regarding the calling of methods on a protected parent object from within a child object, the protected parent object being a child object of the same class. I have a class HostileArea, wich has a "protected DungeonRoom[][] dungeon", DungeonRoom being a child of HostileArea. … |
| | hey Guys, im creating a clas that is to be used in a HashMap to map phone numbers to name. for example : map.put( new PhoneNumber(207, 8269600, 260), “Paul”); [CODE] public final class PhoneNumber { private final int areaCode; private final int number; private final int extension; public PhoneNumber(int areaCode, … |
| | I know this is easy but I think some people out there are interested in my idea about storing user input in an array...... i read it some where and thought about bringing it much closer to you. [code]import java.util.Scanner; /** * * @author BUSKER-OTT */ public class USERINPUT { … |
| | [code] import java.util.*; import java.text.*; public class FactorialApp { public static void main(String[] args) { // create a Scanner object named sc and intializ variables Scanner sc = new Scanner(System.in); // perform Factorial application when user enters "y" or "Y" String choice = "y"; while (choice.equalsIgnoreCase("y")) { //get input from … |
| | Hello, im sort of an intermediate programmer that has never installed a library on java before could anyone please tell me how to install this library on java so I could use the charts functionality, Please there are all sorts of folders in there I really dont know what to … |
| | The program already can compile and run. But, when we enter the film's code, an error will occurred. We had no idea how to solve it :\ [CODE] public class Entity { private String itemCode; private String title; private String description; private int language; private int time; private String productCompany; … |
| | I have my program all working but whenever a user clicks cancel or exit I want the program to close, not throw my catch. Whenever a user throws a catch they have to input their answer twice before it will go back to normal operations. [CODE] import java.util.*; import javax.swing.*; … |
| | Hello forum, vaironl here. I would like to notify you all that I'm in an IB- Computer Science class (I'm learning a lot as I go, since I promise to skip the normal CS course). I would like to know if I could design this frame for my final project, … |
| | am writing a program that plays rock paper scissor. The user will enter choice manually (rock is1, paper is 2, and scissors is 3) and the computer will chose one at random without letting the user know. The game will run as many times as the player wants. I can … |
| | just like my title says my loop won't work [CODE]import java.util.Scanner; public class TestSocialEvent { static String title, attire, dayweek,input,time; static int day,month,year; public static void main(String[] args) { Scanner k = new Scanner(System.in); System.out.println("Social Planner"); SocialEventController sec = new SocialEventController(); while(true){ SocialEvent ev = new SocialEvent(attire, dayweek, title, day, … |
| | Hello, i need to list all menu items on page load, now it's on mouseover anyone can help? [ICODE] <a href="home.php?cat={$catid}" class="arrow" onmouseover="javascript: return switchSubcatLayer(this);"></a>[/ICODE] |
| | hi i write code that is mesure the area of traingle with two constructor ... with argument and default constructor and set ,, get , high and length ,, and tostring , equals methods but i think is there a logical error class file [CODE] public class Traingle { private … |
| | hello daniweb.. :) I am learning JAVA and currently new to it, I am studying "The Complete Reference-JAVA" by Herbert Schildt. In that book its written that using short or byte will save space, but there is no guarentee that Java won't promote those types into int internal anyway. Remember … |
| | Ok so i have this 3D cube (not made in java 3d) and i want to move it around and rotate it with keys on the keyboard. I know how to start it off and stuff i just can figure out how to make it work lol well here the … |
| | basically, instead of the "(N1 + N2 + N3)" which is in the average method we need to call the sum method to the average method as the sum method returns a value = (N1 + N2 + N3). does anyone know how to call the sum method to the … |
| | Hi, I'm trying to have a set of random numbers into ArrayList and to print it. e.g. if the total number is 10, [2,3,5] or [1,5,2,2], etc. In below, it gives me each numbers but because y gets zero, it throws an exception. Can I have help to print all … |
| | Hey guys. I have been trying to write a progamme, and for some reason it doesn't give me the result I want. Anyway, here is a description of the programme I want: "Suppose that a is a positive integer. Suppose we repeatedly modify a as follows: if a is even, … |
| | I'm working on a random number guessing game with 5 tries that uses standard JOptionPane GUI and 3 methods, the requirements have each method doing a specific task. The main method starts a game is supposed to handle the 'you won' or 'you lost' dialogue and play again if the … |
| | Hi all... What is the purpose of built in class Say for example in event handling event class are : ActionEvent,MouseEvent,ComponentEvent,ContainerEvent... like that what is the purpose of this classes and in which case we are using this kind of the classes. Thanks...:) |
| | Hey guys, i need to write a small program to read the contents of a file, and do a "rot13" encode on the contents in java this is the link for image of rot13: [url]http://www.websters-dictionary-online.org/images/wiki/wikipedia/commons/thumb/3/33/ROT13_table_with_example.svg/320px-ROT13_table_with_example.svg.png[/url] i have no idea where to start and i need to complete this application before … |
| | Write a while loop that will generate and print 100 random integers on the range [1,1000)? I cant get mine right, plz help. Also, i dont have JAVA so couldnt really check And also, if you can: Write a while loop that adds up all the odd numbers between 0 …  |
| | I am fairly new to the Java lang and this is my first post so if I do it incorrectly please forgive me. Anyways, I am basically trying to find [LIST] [*]MaxInDegree [*]MaxOutDegree [*]MaxDegree [*]MinInDegree [*]MinOutDegree [*]MinDegree [/LIST] of a 2d array with various nodes. Here is what I have … |
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