36,051 Topics
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 | Hi Guys Im A Noob, so i need your kind perception on my code Im running A Table Anytime i do it i get this message Exception in thread "AWT-EventQueue-0" java.lang.UnsupportedOperationException: Not supported yet. And this is My Table Code: private void tablaLISTADOMouseClicked(java.awt.event.MouseEvent evt) { // TODO add your handling …  |
| | [CODE] import java.awt.*; import javax.swing.*; import java.awt.event.*; class log extends JFrame { JButton b1=new JButton("ok"); JPanel panel=new JPanel(new GridLayout(2,2)); public log() { panel.add(b1); add(panel,BorderLayout.CENTER); b1.addActionListener(new ActionListener(){ public void actionperformed(ActionEvent ae){ JPanel pan=new JPanel(); JFrame frame1 = new JFrame(); JButton b2=new JButton("ok"); pan.add(b2); frame1.setVisible(true); frame1.add(pan); frame1.setSize(250,100); b2.addActionListener(new ActionListener(){ public void actionperformed(ActionEvent …  |
 | As I am doing a application on attendance management where I need to store the details by using check boxes I am unable to store the details of check boxes where it will be generated as present or absent in database Can anyone help me to find out this |
| | How to convert a swing based application to Android application  |
 | Hello. I'm doing a lab assignment and I have several subclasses extending the base class. I'm not sure how to "override" the methods and implementations in the supers, because every time my driver class calls a method on my subclass, the superclass method gets called. Heck even within the subclass … |
 | I wonder how to handle exception in `ResponsesEntity`. When it receive wrong url, it supposes to go to the `catch` block and display the `log`. But I keep getting error message in console. The `try-catch` not working as it not display log message. @GetMapping("abc/{Id}") public ResponseEntity info(@PathVariable("Id") String id) { … |
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 | Greetings, Can anyone tell me why my loop does not actually add anything for interest? I'm thinking it is because of the way my interestRate variable is setup as a class variable (static). Here is the code snippets /**************************************************************************************** HNUnit4Ch13Investor.java xx All variables should be declared private Declare a class … |
| | Hello, First off, i did try looking around the forum but i couldn't understand. Here's a few question which i need help with: 1) (adding node at head) i don't know how does the head will hold the reference to the next node, the code is like this: [CODE] //at … |
 | In this assignment you are to write a program that finds a path through a “maze”. The maze will be represented by a 2-dimensional array of ints. You will be given a starting point in the array that consists of a pair of ints <x,y>. In this pair, x represents … |
| | Greetings, I have been trying to figure this out for hours with no avail. Basically I need to print out user input as Initial value, ASCII(char), ASCII(int), and Hex. I can get everything to work however I am not supposed to have the char values print if its a digit, … |
 | Hi! I have made a desktop application which is running perfectly. But i am facing problems with jframe size on different machines. I have monitor of 'Gateway'. I am satisfied with my jframe size on my screen . But when i shifted it on laptop of 'hp' company then my … |
| | hi ! I am developing a pos software for desktop. I am using java derby database for this. I have developed a feature for purchasing items and also a feature for analyzing purchases so that the user can view that what, when, how much he purchased. I am using two … |
| | Hi! I am developing a pos for a store. I have created a settings window. On this window there is a button which is used to set a name for store. When user press this button a message dialog appears with a text field and a OK button so that … |
 | We are facing an issue to bind the selected coordinates of polygon using ArcGIS Javascript library on page load. The same issue we are facing with all geometry types. Please help us to bind the selected coordinates. We are able to find out the coordinates and save them in database. … |
 | i have wrote this program which uses binary search to search for a desired word and which displays the word along with the meaning of that particular word.but each time i print the data that the arraylist contains it just print the word being search but not the meaning of … |
 | write java a program that finds the longest substring without repeating characters in a string |
 | I need instructions on implementing a houghes circle code using android studio to an app. I do not know where to put everything and need detailed instructions on how to create the app and save it onto an android device. iCannyUpperThreshold = 100; iMinRadius = 20; iMaxRadius = 400; iAccumulator …  |
 | cd D:/ #Extract Author information java -jar svn-migration-scripts.jar authors $SVNURL > authors.txt #Clone the SVN Repo git svn clone --stdlayout --authors-file=authors.txt $SVNURL SVNAsGIT #Clean the new GIT repository java -Dfile.encoding=utf-8 -jar svn-migration-scripts.jar clean-git --force #Update the authors file git config svn.authorsfile authors.txt> #Clean the new GIT repository java -Dfile.encoding=utf-8 -jar … |
 | A couple questions before I even attempt this project... Is it possible to create a VoIP application in Java? Is it posssibe to do this using standard libraries? If you can't make one with standard libraries, which libraries are needed to accomplish this? Also, is this a good Introduction to …  |
| | Hi, I'm starting to learn Java EE - JSP / SERVLET and as for my learning progress, I'm trying to achieve this kind of web app but Im having problem with displaying the right selected row (TASK ID Column) from my table. It is populated from my oracle db. Im …  |
 | Hey, my problem is that i got the progressbar and everything i tried was unsuccessfully. The Color is always that orange and i dont get it away. I rly need help woule be nice if i get a fast answer. Regards, Julius  |
| | I already wrote an ATM program which did store only three account number, password and balance but now I want to get these information from a file which would be read to the program and by entering the information the program should search the file and find the line that …  |
 | Is there any better way to find the duplicate words count in a file using Java. I have found one solution using Map like below : while ((line = br.readLine()) != null) { StringTokenizer st = new StringTokenizer(line, " "); while (st.hasMoreTokens()) { String tmp = st.nextToken().toLowerCase(); if (map.containsKey(tmp)) { … |
| | Hi all, I have a class CAR.java public class CAR { private int ID; private String model; public CAR(int ID, String model) { this.ID = ID; this.model = model; } public int getID() { return ID; } public void setID(int ID) { this.ID = ID; } public int getmodel() { … |
| | What is the mistake in this code, I am able to print the total digits of the input number, but when I try to print the *actual number* from the scanner it always prints zero(0). For example the user enters **123456** as the input, and my program is correctly returning …  |
 | Hi guys, I wonder if you can help me. As I’m now doing java development as a profession now, I’ve realized that I’m a little weak when it comes to fix, modify and understand code within large applications, and, needless to say, I need to find a way to get … |
 | Hi friends, Being new in junit i have onw question that How to test local variable in method using junit test case? Check that below is my method suppose, public void methodToCheckStr(int testVar) { String str=""; if(testVar==5) { str="Success"; } else { str="fail"; } } How to create test case …  |
 | hello guys, im new to software progrmming, iam more interested in java programming. iam trying to write a code using netbeans, but after finishing compiling th code, then after running it, it says build unsuccesiful, it gives me an error wich i do not understand.. |
 | I have created a black jack app and have got it show both cards but I only want it to show the second card in the hand and keep the first one hidden until its time to show. Here is the code package blackjack; import java.util.Scanner; /* This program is … |
| | I want to have a forum in my website project in school. i don't have any idea. may anyone help me suggesting some examples. it is like daniweb forums. i want to save the topics in the database and retrieve it as a link. i dont know how to do …  |
 | I'm trying to replicate the ray-looking design, just like in the first image. Here's my code: When the user clicks on the button: private class drawInnerShape implements ActionListener{ public void actionPerformed( ActionEvent e){ paintInnerDesign = true; repaint(); } } The following code executes: class DrawArtwork extends JPanel { @Override public … |
| | im stuck on a question from the book, java in 2 semesters chapter 7. 2a) write a program that asks the user to input a string, followed by a single character, and then tests whether the string starts with that character. [CODE]public class StringTest { public static void main(String[] args) … |
| | hi all I am doing this thread program and when i run it is not giving any output, can someone tell me why no output is shown. public class RelayRaceDemo { public static Thread runner[]; public static void main(String[]args){ RelayRacer rr = new RelayRacer(); ThreadGroup country[] = new ThreadGroup[5]; country[0] … |
 | hello, i just set goal of mastering algorith and i just get started i have an algorhtm for insert sort and i when i write it in c it is not sorting this is the algorith for j D 2 to A_length key = A[j] // Insert A[j] into the … |
 | Here's an interesting little scenario. You get challenged to a game of coin toss. Both players pick a sequence of coin toss results (heads or tails). The coin is repeatedly tossed until the sequence for one of the players occurs. The loser pays the winner a dollar. You'd assume that …  |
| | Dear All, I am trying to learn j2ee from the basics. I have written a basic program from my guidance book and when i try to compile it , i get the below error. Please throw some light on it. javac -classpath C:/Program Files (x86)/Apache Software Foundation/Tomcat 7.0/lib/servlet-api.jar:classes:. -d classes … |
| | below is the code i have and i am getting an unhandled IOException in the inputstreams: import java.nio.file.*; import java.io.*; import static java.nio.file.AccessMode.*; import static java.nio.file.StandardOpenOption.*; import javax.imageio.ImageIO; import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.*; public class FinalProject extends JFrame implements ActionListener { JLabel guess = new JLabel("Guess the … |
 | // Also attached to this question is the assignment sheet. Need help pls. import java.util.*; import java.awt.*; import java.applet.*; public class Lab15st extends Applet { private int numBars; // number of bars to be sorted private int barHeight[]; // array of bar heights private int sortDelay; // delay between comparison … |
 | Hello, I not an expert in android coding but I know little bit, that's why I bought this app from a person. Unfortunately the app author was not giving supporting to me that's why Iam posting this issue here. So please help me, my new app was working fine in … |
| | // FInished isPal but need help with other few. public class Lab14st { public static void main (String args[]) { System.out.println("Lab 14, 80 Point Version"); System.out.println(); System.out.println("The Palindrome Program"); System.out.println(); System.out.println("By: Arjun Desai"); // Substitute your own name here. System.out.println("\n===========================\n"); boolean finished = false; do { System.out.print("Enter a string ===>> … |
 | I need to separate the questions to atleast up to unemployment and after clicking the button it will go to another page and it resume the user from answering the question.. Thanks in advance.. <?php include('connection.php'); ?> <?php session_start(); if(!isset($_SESSION['id']) || $_SESSION['privilege'] != 'user'){ if(session_destroy()) // Destroying All Sessions { … |
 | # Split a dataset based on an attribute and an attribute value def t_split(x, y, z): l, r = list(), list() for row in z: if row[x] < y: l.append(row) else: r.append(row) return l, r # Calculate the Gini index for a split dataset def gini_index(grp, class_values): gini = 0.0 … |
 | The Canadian Forest Service wants to do a simple simulation of the growth and pruning of forests. Each forest has a name and exactly 10 trees. The trees are planted when they are 1' to 5' tall, and each tree has a individual growth rate of 50%-100% per year. For … |
 | Good day, I have to make a data scraper and after I take the informations I have to get them in a CSV file.This is the original request:For the final java academy test you have to create a small crawler. What do I mean by "crawler"? A crawler it is …  |
 | Hi everyone, I've been searching through these forums to find a way to transfer my program output [including the user's input] to a .txt file. The program basically gets the user's name and their choice of ingredients and then prints out a receipt of their order. Below I've attached what … |
 | I am new to Java Programming, I need help on this.. Any help would be appreciated. Write a java program that generates a random number between 50 and 100 for a student grade and determines the letter grade of the student. The student grade is determined based on the following …  |
 | I have to create a sign up and log in forum in Java . But I have no idea how to do, or what to do I really need help otherwise. |
 | I am having a trouble not knowing how to do a java code that will take user string then encrypt it using Elgamal algorithm as following Elgamal algorithm Pseudo code: - Select Q where Q is a prime number - Select α where α is a primitive root of Q … |
| | I need help with some questions.They were 20 of them but this 5 have been so hard for me. Any help I get will be highly appreciated. Cheers!!! 1.When mergesort is implemented on a linked list it is possible to implement it as a stable sort. True or False? These … |
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