36,051 Topics
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| | Hello guys, I'm completely losing it. The question asks to emplement an electronic directory traverse in size a chosen folder (using JFileChooser)and print the structure with the calculated the size of each folder and file. Finding the file size is easy using File.io `getSize()`. However, to find the size of …  |
| | i wrote a program that have four classes .one of these classes is Date : class Date { public Date(int year,int month,int day) } in other classes there are some method that one of they're input is Date for example public void f(Account account ,Date date) i want to write … |
 | Is there any simple way to create a txt file with its name come from the user input. Also the file will be stored in a specific location such as C:\Users for example. Here is what I do but doesn't work. import java.io.File; import java.util.Scanner; public class cITF implements ICommand{ … |
 | **This is intented for learning purposes, feel free to study the code** Create a drawing that looks like this (pyramid) The number should be incremented with the modulus. |
| | Have first part of program written. It will use enum array for month and average rainfall amount. It starts at January and runs through December. Second part is to ask user at what month they want to start (example, April). The printout would then start at April of year -1 …  |
| | I need to put this http://www.khanacademy.org/cs/chaos-pong/4810465738752000" into a web page .But I don't know how i can do this.Please any one help me thanks.  |
 | hi , i want to add code to edit text feild (Jdatachooser ) in my code , how it ? i have attribute ( Date ) type Date to mysql . how to add below code ? try { String va_ID = txt_idParking.getText(); String va_numCar = txt_numCar.getText(); String va_Modelcar = … |
| | All, what I am trying to do is isolate markings (differences) in images. I have an unmarked image (I1), a marked image (I2) and a third image (I3). I would like to compare I2 against I1 and store the x,y (or array of pixels) of the differences (isolate markings). I … |
| | Im trying to write a code where the user inputs an expression and then prints the answer and the postfix expression my problem is the parenthesis are all off and I'm not sure how to get them to print normal or even do without the parenthesis at all For instance, … |
| | i intend to do my project of making browser or media player in JAVA.i need help..someone please guide me how to go about it...and someone has any other bright idea of some other project which he has made or which is unique in nature..please advice and help...will be grateful for … |
| | how read from file and set txte in jTextArea(use IDE netbeans ) |
 | I don't understand how JVM is so small. And also how it use memory in each device? Why do we have to understand about it. |
 | Hi, i'm trying to build a transaction reconciliation tool. For which i'm using permutation combination. I have total of n transactions from which m transactions must i have to take.On rest n-m transactions i want to apply permutation combination. How can be that possible. Please help  |
| | Ok, so I just made this account because I'm super stuck. Basically I need to create a math quiz that takes a users input (1 through 12), have it spit out a question, i.e What is 5 x 12? however if the user enters 5, it must randomly generate a … |
| | I have now official decided that I would delve deeper in the world of computer engineering and software development. I am currently studying Java in my introductory course at school. While we're talking about arrays, loops, and string manipulation, I was curious about the idea of throwing exceptions. Let me … |
| | Hi all, I have a J2EE web application that I am integrating with LDAP to implment Password Reset functionality to allow AD users to change their own password. My code works at times, and sometimes it stops working throwing [code]LDAP error code 52, initializing SSL/TLS error.[/code] I don't know why … |
| | I'm a student who is interested in coding his own Minecraft mods and there by hoping to learn Java Code. I have already taken many courses on line (Youtube) but those courses only take you so far and they DO NOT help you out if, by some chance an error … |
| | I am trying to understand the structure of .class file in Java. Wrote a very simple program : package javautilities; public class Class_File_Structure { public static void main(String[] args) { int a = 10; int b = 20; int c = a + b; } } used the command javap … |
| | I am thinking of making a website, which is a quite big one and may need scalability later on. I know a little bit of asp.net , php and j2ee but not much, so before I start I want to know which language would be the best choice to make … |
| | this is my code, the problem the compiler is saying is i need an extra parentheses after 5 in get fahr, but i know that cant be it... help meeeeeee please :) public double getFahr() { if (tempUnit.equals('C')) { return (5(tempNum-32)/9); } else { return tempNum; } } public double … |
| | I's like to simulate the behaviour of Dynamixel Pro's robot actuator, including the control table, please see [it here](http://support.robotis.com/en/product/dynamixel_pro/control_table.htm). I can simulate the robot actuator fine, but simulating the control table is a bit puzzling for me. The control table has address from 0 - 892. One way I can … |
 | i have a .csv file contain some name as below: William Shakespeare charlie chaplin david Copperfield and i'm supposed to write a java program that will turn the input above into the output below: WS cc dC but i still couldn't get the output that i want, i wanna ask … |
| | I am writing code that has classes like playlist,album,artist,song in playlist class i need to write a method that will play the first song public void play(){ //the code } what sould I write |
| | I've been trying to resize my jbuttons to the size of my pictures, but the jbuttons keep on occupying the whole frame. The size of the photos are 150x267. import javax.swing.*; import java.awt.event.KeyListener; import java.awt.*; import java.awt.event.KeyEvent; import java.util.Timer; import java.util.TimerTask; public class StartGame extends JFrame implements KeyListener { Timer … |
| | import java.util.Scanner; package p1; class Electricity { int cread=18634,fix_rate,due,ub_tax,curr_charge,bill,to_bill ; int pread,unit ; System.out.println("fix_rate="); Scanner sc=new Scanner(System.in); int fix_rate=sc.nextInt(); System.out.println("due="); int due= sc.nextInt(); System.out.println("ub_tax="); int ub_tax= sc.nextInt(); System.out.println("curr_charge="); int curr_charge= sc.nextInt(); System.out.println("unit="); int unit=sc.nextInt(); public void calc() { do { pread=cread-unit; System.out.println("fix_rate=" +pread); } while(unit<200) { int c1=2.75*unit; System.out.println(c1); } … |
| | Write a program in Java to create an applet which take radius of a circle as input and find the area of a circle and draw the circle. Java Code: // Java Document import java.applet.Applet; import java.awt.Color; import java.awt.Event; import java.awt.TextField; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.geom.Ellipse2D; class Circle extends … |
| | Hi Friends have a nice day, is there any certification exam for Hibernate and Spring like oracle certification. if so kindly guide me. thanks for your time |
 | Hey Everyone, This is my first post. Recently, I have been working on an instant messenger program in java. I have created the networking part of the client, and I have almost finished the server side. I know the program works and I am allowed to send messages, but now … |
 | package JavaApplication42; import java.io.*; import java.io.IOException; import java.util.*; import java.io.BufferedReader; public class DPmodification { public static void main(String[] args) { BufferedReader br = null; int n, c, d,k, swap,i=0,j=0,no_of_selected_item=0; int numItems; int numTransactions; double minSup; String configFile = "F:\\New Folder\\configtrial.txt"; try{ FileInputStream file_in = new FileInputStream(configFile); BufferedReader data_in = new … |
| | Hey, I have a lab to do, but I'm stuck on one part of it which is probably really easy but I can't figure it out. This is what I have so far, but it doesn't compile, and then I have to use polymorphism to output it. The purpose of … |
| | Hi! I'm just new at GUI programming and I've been busy creating a GUI for my project. My image won't show up in this particular code. I've made two other classes and the images load perfectly. import javax.swing.*; import java.awt.image.*; import java.awt.*; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; public class Battle implements … |
| | I got a code from a book on Fibonacci written in java. And because it's still raw, I did some editing to it (change some lined of code, add code that enables input etc). But, it doesn't work. The other three fibonacci programs (with different algorithm) work fine, but not …  |
| | Hey im trying to run background music when the user clicks the button. below is my coding. when i run the program, it says file cannot be found. any help would be appreciated [CODE]import javax.swing.*; import sun.audio.*; import java.awt.event.*; import java.io.*; public class Sound { public static void main(String[] args) … |
| | import java.lang.*; import java.util.*; class Project { public static void main(String a[]){ Hashtable<String,String>language=new Hashtable<String,String>(); Enumeration<String>names; String str1; String lang; language.put("insert","Load"); language.put( "select","Dump"); language.put("*","All"); language.put("from","as"); language.put( "where","Filter"); language.put( "Group","Group"); language.put ("Join","Join"); language.put("Order By","Order By"); language.put("Distinct","Distinct"); language.put("Count in lines","Limit"); language.put("set","set"); language.put( "Describe","Describe"); language.put( "Group By","CoGroup"); language.put("delete","Flatten"); language.put("dual","Sample"); language.put( "into","as"); language.put( "count *","count … |
| | hi. can any one help. i am doing a java application. and using a button listener class. and says cannot find the text box object. can you help. will do the sample code. how to get this to work. marvin. ps: here's the code if(e.ActionCommand().equals("btnName"}} {JOptionPane.showMessageDialog("My name is: " + … |
| | I'm working on a Database assigment but I'm kind of stuck. It seems to be the Double value that's causing the issue because when I use the Varchar data type I can create my table. Is there any way I can use Double without using Varchar. Any help is much …  |
| | hey guy i have adoubt regarding public void static i mean im not able to get when to write at that time ith public void......... so can someone help me  |
| | I don't think I fully understand the concept of looping. Below is what I put into eclipse and the results I get, am I doing something wrong to get the correct results if you could help thanks /* Working with a sentinel value Anderson, Franceschi */ import java.util.Scanner; public class … |
 | method non static public class LoGIne{ public String user (String a){ String rr = txt_user.getText(); String pass = txt_pass.getText(); //ConDb(user,pass); return rr; } --------------------------------------------------- method static public static Connection ConDb(){ //String USER ="mh"; String d ,l,h; d =("ameer"); String PASS=d; LoGIne a = new LoGIne(); String USER = a.user(h); // … |
| | i have a text box in that i'll enter a value . The value should generate the tree structure using javascript .is there any pulgins for the above . please suggest me |
| | Hey, so I have an assignment for java using the hailstone sequence. My teacher wants us to print out the length of the longest sequence and the number for that. The problem I'm having is that I need to print out the actual sequence underneath the first part. Can anyone … |
 | /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package theaterrevenue; import javax.swing.*; import java.awt.*; import java.awt.event.*; /** * * @author */ public class TheaterRevenue extends JFrame { final double percent = .20; double adultCost; private JTextField label2; private JTextField … |
| | Hello everyone, I am designing a simple game with graphics in which I am trying to add a keyListener to my Jframe but the keyListener nor the mouse Listener seem to respond. Here's the code: import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.net.*; import java.io.*; import javax.imageio.ImageIO; public class PaintDemo … |
| | Hi all, I've just started out with programming and I'm working on a Binary Tree of integers. I have the Node and BinaryTree classes almost complete, but I'm having a derp moment trying to test my minimumVal method from the main and not sure on what to pass into the … |
| | So far I learned how to download the JDK Java Development Kit. Then created a PATH file cause it the training video they said something about sp Java won't mix up directories and so on. So putted the semicolon at the end of the Path File... In Environment Variables. Then … |
| | I have this code which finds the duplicate rows .I want to check if the top row has weight greater than given minimum support..If true then generate its subsets. If row 1 i.e 11110011 wight>min_sup then generate subsets....if not then jump to next row here 1 represents presence of items … |
| | hi all, i need lil help to do this program Students number = 10 Students name= Ahmed, Ismail, Mohammed, Esra, Ali, Omar, Abulla, Khalid, Talal, Sara Develop a program in Java to accept the number of students in a section for a subject and for each student accept the Student … |
 | i am new to the e2glite due to assignment required. Currently using SWI-PROLOG as my coding software, and now i was copy some example code and also downloaded e2glite.jar from e2glite web, after i follow their instructions, i am able to view the java on browsers but i can't able … |
| | Given a Java project created using Netbeans that has some libraries added (.jar files) - these are required for the project to work. If the project is copied over to another computer will these .jar files need to be added again? |
| | # Hey guys, I'm having a problem with trying to replace a string in funky.jar from a java program. # The string in funky.jar is called house. The default value of house = "brick". Is there a way I can code my java program to change funky.jar's string to maybe … |
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