36,051 Topics
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 | Can someone point me in the right direction? I have a java program created in netbeans that has several tabs that contains various text fields, boxes and such. Over top of these I have a jlable that displays a jpg, or other graphic file that is used for a background … |
| | Hi, I am trying to make my own paint program. It uses canvas where user draws. How can I get image representation out of that canvas as bufferedimage so I can save it with imageio.write?  |
| | I have a class project where we must create a program that takes 5 grades of a student that the user inputs and stores them into an array and then gets the average of the 5 grades for example Grades = 92 89 99 78 96 And then stores those …  |
| | I m stuck in some jsp programing issue. I'm working as temp web-admin for my friend who is one vacations. I'm managing his freelance web-designing website. Over the weekend i was told by my friend ; to make changes in the login.jsp page and do some programing to log user …  |
 | hi, someone can give some example on how to update option and radiobutton value into database :( |
| | For my class we need to create an Ascii drawing with at least 3 nested loops and 3 different type of loops. this is what i have so far ( just 2 lines of the drawing) for(int i = 0; i<=4; i++) { System.out.print("0"); } for(int i = 0; i<=13; … |
| | I’m not sure why this isn’t working. Java isn’t giving me an error I have this in my StateController class public void insertLinks() { for(int index=0; //index is a local variable for state objects index < numStates; index++) //for loop to continue making state objects stopping at numStates(50) { myList.insertFirst(myStates[index]); …  |
| | Hi, i am not sure whether this topic would go under this category, thought this would be more suitable what are the famous software architectures? i have to do an research on this an present, I am new to this topic appreciate a reply thanks  |
| | Hi, I'm concentrating on getting my card and deck classes for a card game project working correctly. Both my card and deck classes are working technically correct but when I go though my nested for loop in my Deck class to create a deck of cards it ends up being … |
| | Hi, I have to write a program that plays out a whole game of the card game WAR. I have to create a bunch of classes that go along with some pre written classes so right now im trying to start out small and work my way up. We are … |
| | package vc_client1; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.net.Socket; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.DataLine; import javax.sound.sampled.Mixer; import javax.sound.sampled.SourceDataLine; import javax.sound.sampled.TargetDataLine; public class voiceReceiver { public Thread playThread; boolean stopCapture = false; static ByteArrayOutputStream byteArrayOutputStream; AudioFormat audioFormat; static TargetDataLine targetDataLine; AudioInputStream audioInputStream; BufferedOutputStream out = … |
| | What is the way that need to be implemented in java to make a server broadcasts a voice to multiple clients, instead of broadcast voice only to one client? for example I am doing a server which can broadcast voice to multiple clients at the same time, now my server … |
| | Gents as you can see I have done great progress in getting the last line and the line beforelast working and spliting but I am stuck now as I need to the beforethat (3rd) line from last also included and I can't figure it out, everything i do fails to …  |
| | Hi, can anybody help me with this? I am doing an Introduction to Programming module using Java and am stuck at this question. Write a program which reads in a username and a password, and expects the username to be "brian" and the password to be "spam". The program should … |
| | help i cant figure it out. Write a program that defines and instantiates a new String object called title with COMPUTER PROGRAMMING in it. Then create a new String labeled title2 -- write code to store the contents of title into title1 in reverse order. Using a for loop and … |
| | Hi, I am doing a project on creating a traffic simulator for a particular road junction in java. I am looking for ideas on how I would go about recreating the visual of the junction in which I can have moving cars on. Would I use Graph with nodes or … |
| | so I have a 2D arry with defaul value 0, and what I want to do is to accept a value from a user to change 0s to 1s depending on the accepted value. for example: we have an arry like this 0000 0000 0000 0000 and the user enters … |
| | Recently I learnt java as a crash course in a private institue they covered me core and advanced core concepts in java for the version 1.6. Since the lastest version is java 1.7, so which book I should follow for my further improvements to become an ideal Java programmer. |
| | hi i need to convert my comma seperated text file in to a two dimensional array and i should be able to access each element in that array....i tried so many programs based on read line and split functions but i didn't get the proper output....please help me to do … |
| | Hi, all. I've got task about Natural Language Processing. Usually called NLP, is a technique to process natural language/people word became information for some needs. That's I learn about so far. I wonder if somebody can help me in NLP using Java programming language. If there some references or books …  |
| | class Account { Long accNum, pwd} public class Banker { public static void main(String r[]) { new Banker().go(); // do more stuff } void go() { Account a1 = new Account(); a1.accNum = new Long("1024"); Account a2 = a1; Account a3 = a2; a3.pwd = a1.accNum.longValue(); a2.pwd = 4455L; } … |
| | <? super Animal> means animal or it's superclass only. Then why inside the method it's allowing to add Dog object even though it's a subclass of Animal? This program compiles and runs! import java.util.*; class Cat {} class Animal{Animal() {System.out.println("Animal constructor");}} class Dog extends Animal{Dog() {System.out.println("Dog constructor");}} public class GenericDemo5 … |
| | So i am seriously in need of help from someone or everyone on improving my program and any corrections if needed. I have listed my codes below and i am hoping to receive input, suggestions, corrections, and advice. Please remember, i am new to programming so please for those of … |
| | Can anyone tell me how to use Java Keylistener to add validations in my java gui form?? eg. I have a textfield. I want to enter only alphabets in it. I dont want any numerics. So when a user tries to type a numeric value in it, I want to … |
| | this is Sudoku.java this is the main class. Reminder does the time keeping, the SudokuBoardDisplay displays the board and draws images. The one who handles the logic is the SudokuModel How do I make the images clickable and do something. how to display the remaining time as JLabel ....? i … |
 | am i able to delete the text from output window? please answer me.. |
 | is it possible to have my cellphone send periodic text to another phone stating the location (GPS)? concider: Assume i have lost my phone and would obviously like to have it back. is it possible to design an application that will periodically (automatically say after 60 mins passes) send a … |
| | Howdy guys need help changing , from string to a big decimal for my addition method in my calculator , i understand the problem but not the solution . Any help would be great, thanks. public void add() { BigDecimal oneNumber = model.getDisplay(); BigDecimal twoNumber = model.getDisplay(); BigDecimal result = … |
| | Hi i am trying to write a search function and the question i have is this, when i do something like this comix[0] = new Comic("book title", "Author", "isbn", 454.24F); for (int i = 0; i < comix.length; i++) { Scanner console = new Scanner(System.in Scanner console = new Scanner(System.in); … |
| | hello everyone need help with my program this is a airplane seating program for reservations it's a 2d array of 000 .. and when i take a seat it changs to 1 we have first class supposed to be first 2 rows and rows 3 to 7 are business class, … |
| | I want to start as junior in Java in a company but they ask me to present them some tasks that ensures that i am more than a junior.they offer me a task to create a Swing Gui with buttons and stuff.I have already a good knowledge of Java from … |
| | Hi all, I'm am very close to finishing my 2 player pool game with only a couple of rules left to add. I am currently trying to assign a ball colour (red or yellow) to the player who pots the first ball. I am at a loss at the minute … |
| | I need to design an application that determines and prints the number of odd, even, and zero digits in an integer value read from the keyboard. This is what I have so far. public static void main (String[] args) { int odd=0, even=0, zero=0; Scanner scan = new Scanner(System.in); int … |
| | Hey guys, im new to programming, just took my first course in university. I'm currently trying to program a calculator that does multiplication, but its giving me this error: C:\Users\Karim\Documents\Karim.java:9: error: package Java.util does not exist import Java.util.Scanner; And ofcourse followed by a few other related errors. Anyone know how …  |
| | //**************************************************************************************************** // Project15.java Author: Lewis/Loftus/Cocking // // Write an application that plays the rock-paper-scissors game against the computer. When played // between two people, each person picks one of the three options at the same time and the winner is // determined. The program should randomly choose one of the … |
| | Hey guys, im new to programming, just took my first course in university. I'm currently trying to program a calculator that does multiplication, but its giving me this error: C:UsersKarimDocumentsKarim.java:14: error: missing method body, or declare abstract public static void main(String[] args); Anyone know how to fix it? :( import … |
| | Hello, I am currently working on a school project and ran into a little bit of trouble. Every time I compile the program I get 2 errors they are: cirlce.java:23: incompatible types found : java.io.IOException required: char letter = get.ioException(); ^ cirlce.java:37: possible loss of precision found : double required: … |
| | Modifty the Cash Register Class to create a file containing a sales receipt. The program should ask the user for the quantity of the items being purchased and then generate a file with contents to similar to the following: SALES RECEIPT UNIT PRICE: 10.00 QUANTITY: 5 SUBTOTAL: 50 SALES TAX: … |
| | Hi all, i want a simple java code to convert currency to indian rupees...how to proceed? |
 | I wasn't able to get any response from my last post, so I'm rewording my question with hope that my question is easier to understand. I need to get a visitors location and display a custom header graphic based on the *Region* returned. For example: I live in Edmonton, in … |
| | Guys, I just want to know whether is there any way to give a security to the webpages hosted in server. For example, I have hosted jsp application using tomcat. I want to prevent someone from copying those files from tomcat in my computer(Maybe from C Drive). Anyhelp will be …  |
| | All, I am using Netbeans 7.2 to build a form. I added a Swing JTextArea to my form and all is well. I'd like to add a titled border to my JtextArea (or the JScrollPane in which it lives) but can't figure out how. I tried Right Click > Properties … |
| | I want to modify the Cash Resigter Code below to create a file containing a sales receipt. The program should ask the user for the quantity of items being purchased, and then generate a file with contents below: SALE RECEIPT Unit Price : $10.00 Quantity: 5 Subtotal: $50.00 Sales Tax: … |
| | Hey, I posted earlier about arbitrary expressions and I did find solution to that. The question is how do I create random expressions? So far I've created codes to generate random operators and random numbers, how will I generate random expressions? E.g. a1,a2,a3 are variables for random numbers I've assigned … |
| | Hello, I am currently writing a card game in Java. My question is when I write the follwoing code below: `Inline Code Example Here` 38 // select a random number between 0 and 51 39 int second = randomNumbers.nextInt( NUMBER_OF_CARDS ); Will the program properly generate 52 cards? Should I … |
| | write a Java program that allows the users to enter in any number of non-negative integers, whitespace delimited. The user terminates the list of numbers with a negative integer. The program then should print the average of non-negative numbers entered. |
| | I am not to sure what the error is in my code but the order variable does not seem to initialise properly and hence my gui displays the wrong output, for example when cheese,tomato and chicken are selected it only displays Chicken with Tomato Tomato $12.75. Any help will be … |
| | I'm totally lost. I have a programming partner and this is what he sent me. I can't get the program to compile. I don't know where to start. Any suggested place to start? package Assignment2; public class TooBigException extends Exception { private static final long serialVersionUID = 1L; public TooBigException(String … |
| | This might be a general math question, so excuse me if it doesn't belong here. I have an airplane that flies around the screen. Pressing the W key will make it counterclockwise, and pressing the S key will make it rotate clockwise. When I press space, it shoots bullets. However, … |
| | I would like to know what tool/class should I use to create a map that used for games? such example: user use key to move an object...and if moves then the more map will shown ... I admit, I did not do much research on this.. but I wanted to … |
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