31,001 Topics
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| | Hi i write a calculator ,This calculator get an arithmetic expression written in infix notation , then change it to postfix notation , then finds the value of postfix notation . i have a problem , this program only work for one digit numbers :( please help me to slove … |
| | [QUOTE] Hi, I have a java assignment due in a couple of hours and I am stuck and i am getting a lot of errors in my code, if someone out their can help me out, i would appreciate it, thanks.[/QUOTE] here is my java assignment......... [ATTACH]10388[/ATTACH] [QUOTE]this is the … |
| | Hi, I have a client written in java applet and it listens for responses on http: //localhost/CardPager. Now, I have a server code written using jsp servlets and a webpage for a user where I can write a message in a textbox and press the send button, the text message … |
| | Hi, i am looking to create a standalone ordering system for a fast food business as project using java (but perhaps another language if it is easier). I want the system to be able to run without an operating system ie the program should run from booting from an USB … |
| | hi i have written a small chat application.. gui created using frames.. both can send text to one other using socket programing over the localhost.. is it possible to send files too along with just text?? Pls help Regards, Bharat Shivram  |
| | hello we use the class io.*; in our college we use in a unix platform which is import io*.; i am trying to code a code so taht i can get a string input i tried ConsoleInput.readString, and also ConsoleInput.readLine() but still i get an error it says that readString … |
| | hi We are creating a program for class which will take keyboard input and then get the instructions from that basically there could be as many as 4 instructions currently I am doing the following [code=java] System.out.println("Enter Input: "); humanInput = br.readLine(); StringTokenizer humanInputBrokenUp = new StringTokenizer(humanInput, " "); if(humanInputBrokenUp.nextToken().toString().equals("exit")){ … |
| | I have array of 10 JFrames instanced and I want to kill 3 or 5 or n if them,but not all!!! how should I do it? and where? in constructor or in main...? [CODE]public class KlasaMrdanje extends JFrame { public int kontrola1; public KlasaMrdanje(int kontrola) throws Exception //KAKO DOBRO SA … |
| | I have corrected a few errors,the code compiles and excutes for sure. how do one convert a truth table to boolean equation,I can convert the other way round like below; //Suppose Z = (A.B + C)' public class Boolean { public static void main(String[] args) { int a,b,c,z; System.out.println("A B … |
| | Hi there, I'm working on a UI for a program ive been writing for the past few weeks and have encountered a problem getting my windows to pass input control.. My main program runs in a window which extends Canvas and implements Keylistener and is opened by: [code=java]MainWindow myWindow = … |
 | Hello, I have a problem with this method: [code=java] public boolean addRaceDrivertoTeam(String driverLicenseNumber,String nationality,String constructorName, String fullName, Date dateOfBirth , int worldChampionships, int totalScore, int highestRaceFinish){ RaceDriver driver = new RaceDriver(driverLicenseNumber,fullName,nationality, dateOfBirth,worldChampionships,totalScore, highestRaceFinish); Constructors con; con = Constructors.valueOf(constructorName); RaceTeam team= new RaceTeam(con); if (driver.getRaceDriverKey()!=null) if (raceTeam.containsKey(con)&&(driver != null) && !team.isDriverExists(driver)){ … |
| | Good Day All, I have a problem with a database program. The program is to create a database for a Stocktracker program. The details for the code, I got directly from our textbook, and it compiles perfectly, but as soon as I run the program it gives me the following … |
| | Hello all, I am trying to display time in the following format that represents hours and minutes: hh:mm [code] public String getTime() { String time = String.format("%tI:%tM", hours, minutes); return time; } [/code] For some reason I keep getting the following error: "The method format(String, Object[]) in the type String … |
| | Hey guys, [INDENT]I just want to know if its possible to code a java program that will automatically logs you on your online accounts (e.g. such as yahoo mail, facebook, gmail, multiply, or even in this site) using your own username and password you use to register on such accounts. …  |
| | Picture 1 down below is of a Maze program I wrote as it looks when you open it. Picture 2 is the same Maze after the program finds its way out. I want to alter the code so the program adds each blue spot one at a time as it … |
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| | Ok, as I mentioned to Ezzaral, I'm working on learning Eclipse RCP but it is pretty hard to find good resources. I've found one good resource but it was written in 2006 and I'm really looking for some up to date online tutorials or resources using Eclipse Ganymede. Does anyone … |
 | Hello, everyone! I will graduate in this month, and I have contracted with a software development company as a Java Programmer. I am, however, wondering how could I become an excellent Java programmer! I need some suggestions on: how to improve my development skills? what kind of book or journal …  |
| | this is a code for my project ,the project is In the beginning of the program, the users will choose either to create the road by them self by entering the speed of the car, the lane in which the car is moving and the position of the car in … |
| | I need to write a applet that displays between one and three figures that walk across the screen at different speeds form left to right. I have one figure walking across the screen but can't seem to get figure two or three to work correctly. This is what I have … |
| | Hi, I'm using 2 JButtons on my JApplet. The thing is that, the buttons do not show up until I roll my mouse over them? The regular Button works, this problem only occurs with a JButton... I only want to use the JButton because I need set a image button …  |
| | I have to write a GUI based quiz game in Java, but I have no idea how to use the following code to finish the program. The questions and answers are in a text file. Please help!!! [code] public class QnA { //index of correct answer when calling the getAnswer() … |
| | I'm trying to figure out how to merge to full, complete binary heaps if their heights differ by more than 1. For example, a heap with 7 elements merged with a heap with 31 elements, etc. Here's my Java Code for the problem. I can't quite figure out what I'm … |
| | Hi how can i trace in netbeans ??? (run line to line)  |
| | need some guidance on how to make JTable look something like this: [img]http://imgkk.com/i/pQTxSCQf.jpg[/img] so far on searching i'v found nothing concrete and what i have found is scrambled between multiple .java and hundreds of lines. not readable to me. what/where should i look into that would provide me a skeleton-like … |
| | I need to write a program to print the below pattern of * representing the alphabet X. I am unable to print an X using asterisks in the post. I hope you can understand the below explanation. The X should have 7 rows - with three rows at the top … |
| | Hi guys, I am using boolean variables as flags in a program and i want to be able to invert the value. for example if the current value is true, then it must be changed to false; doesn't matter if i don't know what the current value is. |
| | I am an absolute beginner in JAVA, i want to know how to upload and save an image in a prescribed folder. sorry, i tried my best to search for this in the net, but i couldn't find any related to this, and also i do not have any sample … |
| | Class A has a MouseMotionListener which updates cursorLocation every time its called; Class B extends A. the idea is to make B's lastSelected update once cursorLocation is updated and println the new coords. i thought paintComponent could be used for that but im sure theres something obvious im missing: [code="java"]import … |
| | Please help me in the below program Write a class named 'Stack" that has two methods named 'push' and 'pop'. The class has the following members: Member variables : int array [] int n ------------------------> size of the array int top Constructor : to initialize n, array and top. Member …  |
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