36,051 Topics
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| | My friend and I are in a computer science class, and we were wondering how to edit the contents of a jar file? What software would we use, lines of code we might need, or any other input would be greatly appreciated. -From our computer to yours'- zach&kody  |
| | Hi all, I'm facing problem while with invalidating session. Actually I want to redirect a user to the login page if the session is invalid either he presses back button or enters a url. Plz help me. Thanks. |
| | Hi every one ! Guys i am trying to do the Fibonacci numbers without an input just want it to number 8 then stop, But i want to do it using Do While i did it but , i am missing something i can't find what is it its won't … |
| | Hello, i query data from database using jdbc, and there will be a lot of data.how can i solve 1 by 1 of the data?currently, my code just solve the last data. this is the pseudo: [CODE] JDBC connection query data = ResultSet{userid,task_id} while (Resultset()) userid, task_id count++ end close …  |
| | can anyone please explain what is function of this. ? Also, I could not understand enumeration. |
| | Hi guys, My code below works well when it's assumed that PuTTY is resident on the Windows machine where this application is running, and have PuTTY connect to a Linux server on the local network. [CODE] //more code Runtime r = Runtime.getRuntime(); Process p = null; String s = "C:\\Program … |
| | Hi I have search the net to an extent that I can not more and I still have not found the answer, so I am someone here can tell me, I want to be able to list all local drives in a system, but excluding USB. Network, DVD, etc This … |
| | When I run my program, sometimes it shows up and sometimes it just shows a blank frame. Is this because it's having trouble loading the canvas/buttons and all that stuff...aka do I need a loading screen and how do I do one in java? |
| | I need program for get all user from the system or server ... Thanks in advance.. |
| | Hi All, Iam using RSF, I need to clear a form after user clicks on submit button using onLoad function in Javascript. Can anyone give me the solution. immediate help is appreciated |
| | [B]For the error and my question, skip to the bottom. I just posted all of the code in case it's needed.[/B] [CODE]/*********************************************************************************** * * File: Customer.java * * Author: Austin Smith * * Date: 04/04/2011 * * Description: The Customer class handles all client information * such as name and … |
| | Hey I am almost done with my hangman game for java but Im having a tough time in getting the last bit of it. I have included ALOT of comments for you guys to help me out with it. [CODE]import java.io.*; import java.util.*; import javax.swing.*; public class Hangman { public … |
| | I have my code set up so I can 1)select what image and 2)the coordinates of the mouse click where the image is going to be placed. What it currently does it place the right image in the right coordiantes but if I click again somewhere else, it replaces the … |
| | I have been trying to make my program load the images while using web start with no success. The following code is inside an extended JButton class. Image is a string containing the address of the desired image ("0.jpg", for example), I know that this would only work if the … |
 | How to write the recursion code in calculating the sum of the array elements at odd value? I understand the factorial example using recursion, but I am having a really big trouble when writing the recursion codes to perform anything else on my own :/ Please help with this task … |
| | Hi everyone, I'm trying to create a program that you can use to communicate to other people with the same program. It connects to a Server program that gets your message an send it to everyone. I found 2 problems that I haven't been able to solve. The first one … |
| | I have a [ICODE]JFrame[/ICODE] window to which I am trying to add 3 panels. One panel is for input (text areas and their labels which I already have arranged within the panel), one is for a set of buttons, and one is for output. I want the the input and … |
| | I am interested in hiring a software developer but I do not know what should I be asking for when I post the job. My project consists in developing a software that can analyze an edge-matching puzzle game of my invention to produce as many possible solutions numbered, and also …  |
| | I have a simple jpg image saved in a field of type longblob. Now i need to get that image and put it in a JLabel or something similar to show the picture in the program. Anyone knows how can I do that please? I already know how to get …  |
| | So here's my assignment: Define a class Quiz that implements the Measurable interface. A quiz has a score and a letter grade (such as B+). Use the implementation of the DataSet class in Section 9.1 to process a collection of quizzes. Display the average score and the quiz with the … |
| | Here is Assignment07: [CODE]public class Assignment07 { public static void main(String []args) { Asn07Employees emps = new Asn07Employees(ids, hours, rate); Asn07Employees allEmps[] = new Asn07Employees[7]; int ids[] = {5658845, 4520125, 7895122, 8777541, 8451277, 1302850, 7580489 }; int hours[]={ 12, 15, 7, 16, -1, 20, 15 }; float rate[]={6.5f, 12.5f, 1.5f, … |
| | I am supposed to take this program and use a method to tokenize the inputted string into words and store them into an array of strings. Then use another method to print the array element one word per line. I need help on the first method, trying to tokenize and … |
| | Hello Everyone I was instructed to do the following but came up with 10 errors which are listed below can anyone please help with this. Write a sentinel loop that will sum all positive integer values entered; use a negative number to end the loop. Be sure to test for … |
| | I don't know why I keep getting an InputMismatchException :/ It highlights when I call the load() method. Thanks [CODE] import java.util.*; import java.io.*; public class GradeManager { private ArrayList <Student> StudentGrades; public GradeManager(){ StudentGrades=new ArrayList<Student>(); load(); } public void load(){ Scanner fileIn=null; try{ fileIn=new Scanner(new File("grades.txt")); }catch(FileNotFoundException e){ System.out.print("Cannot … |
| | Hey all, I have some code here for a red black tree that prints out in preorder traversal. The entire program works fine and prints out to a file when I run from the terminal "java Main.java<input1.txt>output.txt", however I need set it up so it writes to standard output "output.txt" … |
 | I am wondering if I could write this code to a file and then print it at a starting location (like an image). [CODE] g.setColor(Color.white); g.fill3DRect(en1X + 0 * enZ, en1Y - 25 * enZ, 5 * enZ, 5 * enZ, true); g.fill3DRect(en1X + 5 * enZ, en1Y - 30 … |
| | Hello guys... I have a strange problem on my calculation for a First in First Out Algorithm. The problem is, when i have to calculate 4 processes and above, the waiting time on my processes are wrong, but when i have to calculate only up to 3 processes it is … |
| | Hi all, I'm trying to get the information from a text file to show up in the JTextArea I have in a GUI. I'm using the GUI editor in NetBeans, because I'm a Java newb. I've been reading a lot of things on the web and can't seem to figure … |
| | I am using JPQL to write queries. I have an SQL as [CODE] SELECT * FROM `powergenerationdatapoint` AS pgdp INNER JOIN ( SELECT MAX( TIMESTAMP ) TIME FROM powergenerationdatapoint GROUP BY solarpanel_id )maxtime ON pgdp.timestamp = maxtime.time WHERE solarpanel_id IN ( SELECT id FROM solarpanel WHERE solar_plant_id =1 ) GROUP … |
| | hey, i have created a project in netbeans that contains an applet, later i use that projects jar file in web project and i embed the applet in the html file. the annoying thing is that once i change something in my applet project the and i run the web … |
| | I'm new to java and seriously needing some help..I'm having problems deciding accessor and mutator methods.. and how to create an ArrayList. Write a program that uses an ArrayList of parameter type Contact to store a database of contacts. The Contact class should store the contact's first and last name, … |
| | how can i open .java extension file in jdk software.. i used edit keyword to open the .java file but jdk is not allowing me to open the .java file.. please any one fix this problem...  |
| | i have this 2d array: String[][] testData= { {"s", "y", "r"}, {"s", "n", "r"}, {"w", "y", "r"}, {"s", "n", "r"} }; how can i count the occurrence of a particular element in the column of an array? for example i want to know how many "s" are in first column … |
| | i hav developed a java swing desktop application in eclipse & ubuntu;From where should i get the jar file of my appication or how to create jar file of my application??? thanks in advance........... |
| | Is there a way to diplay a web page like google in an application in a JLabel for example. Kind of like the new minecraft launcher where it shows the update in a window about the login area. Thanks for any help. |
| | if a word begins with a vowel (a-e-i-o-u), then "ay" is added to the end of the word (so "idle" -> "idleay", and "often" -> "oftenay"); on the other hand, if a word begins with a consonant, then the first letter is removed, and is placed at the end of … |
| | hi, i am a newcomer in jsp. straight to the matter, my problem is, i have a parent page. one child pop-up is loaded from it say child1, and then next child child2 is loaded from child1. the problem is at the session out i need to close these two … |
| | [CODE]PointerInfo a = MouseInfo.getPointerInfo(); Point b = a.getLocation(); int x = (int) b.getX(); int y = (int) b.getY(); System.out.print("Y: "+y); System.out.print("X: "+x+"\n");[/CODE] Right now I'm using this, but it gives me the coordinates relative to the entire monitor. Since you can move the program frame anywhere on the monitor, this … |
| | Does anyone the code to convert a JPEG colour image into a gray scale image??... |
| | hey, i have been trying to sign jar file in order to use my applet to connect to mysql database. i am using netbeans and i have been looking for the turorials how to sign jar file but all of them tend to skip steps and i am not sure …  |
| | Hi all, I'm currently trying to solve a problem with a JList. I've got an actionPerformed event applied to the JList (also tried the item updated event but it has the same effect), and whenever this event is fired, (i.e. the user makes a selection), something happens. Now, the problem … |
| | I wrote the following method to get the current date for an invoice: [CODE] public String getDate() { DateFormat dateFormat = new SimpleDateFormat("MMMMMMMMM d, yyyy"); Date orderDate = new Date(); return dateFormat.format(orderDate); }[/CODE] but now I have to add two weeks (14 days) to that date (to get the expected … |
| | i have a file that contains hexadecimal values and i want to convert them to int how do u do that exactly?? [CODE] import java.util.Scanner; import java.io.File; import java.io.IOException; public class CacheSimulation { public static void main(String args[]) throws IOException { int hexAdd [] = new int [32]; //array to … |
| | Hey guys I had some homework in a Java class on Friday. I completed it so I am not looking for answers (I also don't think it will be graded). I was just curious, as a learning exercise, how would you guys improve this and why? Now remember I'm a … |
| | So what I'm aiming for here is to take the user's input as float and write code to split up that input into individual digits and use an array. How would I go about doing this? Here is what my code looks like currently: [CODE]import java.util.Scanner; public class Asn8 { … |
| | Hi everyone, i want to know the information about apache activemq which we are using as a broker for sending the messages using jms and websphere server from one server to another server which is the requirement of our project how to send the messages , how to do configiration … |
| | i am designing a small client server system for a hospital, in this system a receptionist will forward the details of patients as they come to the particular doctor, like i go with a problem related to skin disease, my case would be transferred to that particular doc, I am … |
| | Hi frnds............. I want to implement audio chat feature in my chat server ............ can anybody tell me how to implement it!!!!!!!!!! It's gud if anyone can provide me a small code for implement it.......... |
| | Hello everybody...!!! I got a little but bothering problem. I create a First in First out algorithm schedule but somehow i have a problem in computing the WT(Waiting Time). Actually i have a WT but it only considers the current AT(Arrival Time) of the current process and does not include … |
| | import java.io.*; class InputDiagnosis{ public static void main(String args[]) throws IOException { char ch; int digit=0; int upper=0; int lower=0; int other=0; BufferedReader inputstream =new BufferedReader(new InputStreamReader(System.in)); System.out.println(" Type some text. When done, press Enter to Quit:"); do{ ch=(char) inputstream.read(); if(Character.isDigit(ch)) digit++; else if(Character.isUpperCase(ch)) upper++; else if(Character.isLowerCase(ch)) lower++; else other++; … |
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