36,051 Topics
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| | Hello everyone i want to convert pdf file in docx file, which contain table, text as well as image can you tell me any any class or method which help to me to extract in the same way as it pdf file have i m using pdfbox api  |
| | Hey daniweb Community! I need help opening up new GUI window by using abstract actions. For example if I hit CTRL + C, i want to open a new window while i already have another window open. Please help! Thanks |
| | Hey everybody! So my problem is the very last part, getting the results of my calculation. So what i've done is created a stack with my very own stack class. The = button is suppose to display the result but i get a runtime error. Please help me out. Oh … |
| | I have to make a small paint program using the GUI. I need to know how to use the combo box. I know I have to make an array with the list of colors but I don't know how to add it to an action listener and choose the items. … |
| | [B]Ok so i have a program using JFrame when ever i add more than 2 classes in the frame one disappears? How can i add more than 1 class with one of them to dissappear?[/B] [B][I][U]Tester Class[/U][/I][/B] [CODE]public class TestYourFace { public static void main(String args[]) { JFrame frame = … |
| | Hello :) I am creating a simple client/server file sharing application which I run on same computer. Mine. :) I wish to make the client be able to get a certain file by letting user type "get filename" in the console. When they do, and the server responds, the server … |
| | I'm having trouble figuring this out. I have 3 jlists and each one has a textbox and a "add" button so the user can enter text to be added to the list. I have read probably a dozen webpages or forum posts on this and all have pretty much the … |
| | hi there, i want to implement a server that receives voice packets from many clients then send these packets to all the clients so that the clients are communicated to each other through the server. how i can send the received packets to all the clients? any good tutorials or …  |
| | hello there. i have a two dimensional vector. int numbers[][]=new int[5][4]; i want to find if elements of row numbers[1] are equal to elements of row numbers[2]; i wrotted this code; for(int i=0;i<5;i++){ for(int j=0;j<4;j++){ if(numbers[i][j]==numbers[(i+1)][j]{ System.out.print(numbers[i][j]); } } } |
| | hi i have a problem with my interface,i want to I want when I hit the button, the progress bar goes off, so I have not found where is the problem in my code is that any one can help me and thank you. import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JProgressBar; … |
| | Am programming in java to create a game for snake and ladders.. I decided to keep the numbers in grid and now i want to place the snakes and ladders on the design .. I dono how to do that .. Can any one help please .... Thanks in advance.. |
| | Hey all, I'm trying to install the Android SDK to work with Eclipse. I am following the instructions given on these websites: [url]http://developer.android.com/sdk/installing.html[/url] [url]http://developer.android.com/sdk/eclipse-adt.html#installing[/url] I'm using Eclipse Indigo, and everytime I try to add the ADT Plugin I get the following error: Cannot complete the install because one or more … |
| | I'm trying to read in the following text file: Jim Nasium mgr Fitness & Leisure 45000 Lazy Susan mgr Home Furnishings 55000 Gene Theory mgr Fine Jewelry 10000 And I have the following code: public abstract class Employee { private String name; private double grossPay; private double netPay; private final … |
| | Hello. I was writing a java code for class and I was unable to figure out how strings and sub-strings work. Can anyone provide some insight on the program. Here is the problem: Given a bit string expression, such as 10110 OR 11101, evaluate it. Input: Each string represents a … |
 | I know this is a pretty silly question, but what is exactly an object instance variable? To explain what I mean, take two classes:- [CODE=Java]public class Duck { boolean hasAtail; double height; public void go() { System.out.println(hasAtail + " " + height); } } public class DuckTestDrive { public static … |
| | i have a username and password login box when i send data to the socket its fine but when i print the same data from socket then extra bit is added a head of username. why is it so...please suggest  |
| | sir i a student of 4th year i need some help in my project i m creating a online quiz 30 question and each question have 6 options which are check boxes and question have more then 1 ans so ,i ll select more then one check box so that … |
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| | when i run my code using IDE it run fine but when i run it using command prompt it show following errors Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1985-2001 Microsoft Corp. C:\Documents and Settings\Administrator>cd\ C:\>cd bank2 C:\bank2>javac *.java CurrentTransaction.java:2: error: package com.mysql.jdbc does not exist import com.mysql.jdbc.Connection; ^ CurrentTransaction.java:3: … |
| | import javax.swing.*; import java.awt.*; import java.awt.event.*; public class TheatreRevenue extends JFrame { /** * */ final double percent = .20; double adultCost; private JTextField label2; private JTextField label4; private JTextField label6; private JTextField label8; private JButton button1; private final int WINDOW_WIDTH = 400; private final int WINDOW_HEIGHT = 200; /** … |
 | Hi , I have speech synthesizer java program. It is running fine when i run it from netbeans. But when i build the project and run the jar file , it's not working. The entire program is running fine in the jar file (i.e displaying window , doing stuff etc) … |
| | While running basic HelloWorld program using JSAPI, it is showing error "java.lang.NullPointerException at HelloWorld.main(HelloWorld.java:11)" Following is the code: [CODE]import javax.speech.*; import javax.speech.synthesis.*; import java.util.Locale; public class HelloWorld { public static void main(String args[]) { try { // Create a synthesizer for English Synthesizer synth = Central.createSynthesizer(new SynthesizerModeDesc(Locale.ENGLISH)); // Get it … |
| | please tell me step of converting java source code into jar in netbean or if any software available please send me download link of it. |
| | Hey guys, right now I'm trying to setup my GUI so that I can search for an Employee (which when clicked, disables all of the Text Fields, but not the ID, so I can search for the ID. But right now I have no idea on how to do this, …  |
| | hi, Recently i was trying to look for a pixel searcher for java that was built in with the language but the only command that was somewhat related to specific color pixel searching was the getPixelColor in the robot library. The problem with this command was that it only returned … |
| | hello all how to read from a text file which is not only run at the developer machine but also run at the other machine (after jar ing) I have tried ,the code run at my own machine but cannot find the text file on other machine thank you denny |
| | I was writing this simple loop and it's giving me trouble. It's supposed to count through the permutations in a deck, so Suit is supposed to go as high as Suit: 3 and Rank is supposed to go as high as Rank: 12, but it isn't doing that. My program … |
| | how to store MySQL table data into file and then again from file to table using java program. |
 | Hi guys. I just having a little problem about creating a good console GUI for our homework. My program is just a simple shopping cart program where in we were asked to create a GUI that asks for the user if he is either a ADMIN user or a CLERK … |
| | i have to store msgs of string type in a file in java.how do i distinguish between 2 msgs.and how shud i delete the first msg in the file. for eg: "My name is abc.I am fbvnfdl.I am a girl." is stored in a file. and "My name is abc.I …  |
| | Working on this program that uses 2 classes and a client program to test them, I keep getting this error pointing at my constructor, not sure what i am doing wrong but could use some assistance if anyone is able to offer, the error i am getting is: cannot find … |
| | package class import java.io.*; import java.lang.*; import java.util.*; package Yo public class C { String s,f,d; C(String s,String f,String d) { this.f=f; this.s=s; this.d=d; } void displayj() { System.out.println("1st arg passed:"+" "+s); System.out.println("2nd arg passed:"+" "+f); System.out.println("single arg const:"+" "+d); } } main class import java.lang.*; import java.io.*; import java.util.*; … |
| | Hi. im kinda new here . i just want some help with this code i cant seem to figure out my problem, i already declared a constructor but it keeps on saying cannot find symbol when i compile it -_- import javax.swing.JOptionPane; import java.io.*; public class Sample_Thread { public static … |
| | I like coding, though I'm really stupid, and not very good at it. I'm having trouble figuring out how to remove spaces from a String. I'm such a noobie.. if anyone wants to take a few min to educate me i'd appreciate it. The thing i was attempting to do … |
| | I'm having some trouble using getClientproperty() to get a string value btw, im using java 1.4.2, so no autoboxing I know how to get int values, and here is an example, which works perfect in my program, [CODE] cx = ((Integer) btn.getClientProperty ("cx")).intValue (); [/CODE] but when i try to … |
| | have to display an image(available on the server as a resource) in the webpage using jstl. In the code, I have the image url, but before displaying it in the page, I need to validate if the image is available on the server to display. I tried to use <c:import> … |
| | /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package progressbar; /** * * @author DEBASISH */ import java.awt.*; import javax.swing.*; import java.awt.event.*; import java.awt.event.ActionEvent; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class Progressbar { JProgressBar jprogressbar=new JProgressBar(); JButton jbutton=new JButton("Retrieve information"); … |
| | [CODE]<jsp:usebean id="a" beanName="xyz">[/CODE] how to use above syntax in jsp to deserialize data while jsp page running on tomcat |
 | Is exception handling useful in compile time errors logical errors and even runtime errors? |
| | Hello, I'm a beginner at Java and trying to get to know programming and one day work my way up developing android apps. Well I was trying make this program that would read in data from a txt file like this: [img]http://i42.tinypic.com/2vvkokj.png[/img] I wanted the firstname, lastname, id# and dob … |
 | I need help!!! im trying to get my sentinal to stop counting as my last value passed. Im imputting a value for a house,and its calculating a total price based on interest and stuff ive set up according to the house value. then pressing -1 to go onto the next … |
| | Hi I'm trying to create an array of objects and then put a different value into each object. Problem is, I don't know why this isn't working. [CODE=java] public class TestProg2{ public static void main(String args[]){ Rank rank= new Rank(); } } class Rank{ private static int rankIndex=0; public Rank(int …  |
| | [CODE]public final class SavingsAccount implements Serializable { /** * This constructor requires all fields to be passed as parameters. * * @param aFirstName contains only letters, spaces, and apostrophes. * @param aLastName contains only letters, spaces, and apostrophes. * @param aAccountNumber is non-negative. * @param aDateOpened has a non-negative number … |
| | hey guys, I need a way to ftp a file from a server however i dont want to ftp all the files as there are some files that exceed 200mb what i need is to ftp a part of the file. in other words i would grep for a string … |
| | Hi... i m making script which is checking that username aur password is true or not..... i want to show alert if username or password is incorrect.then i want to redirect my page to original login page.... my code is [CODE]$alert = "<script type=\"text/javascript\">alert('Invalid UserName or Password');</script>"; echo $alert; header("Location:../Admin.php"); … |
| | hello.i have a homework in java wich asks to create this program: there would be n persons who are going to rate songs. for n persons we will ask their name,surname,sex and age.after this each person will rate(vote) with points the song we have given to them.there are 15 songs …  |
| | #include<iostream> #include<conio.h> using namespace std; struct biodata { string fname; string lname; string mname; string address; string pbirth; string dbirth; string religion; string citizen; string civilstat; string gender; string email; }*student; main( ) { int n,i,xx,c,d,a=0,e=1; char b,y; cout<<"how many records?"; cin>>n; cin.ignore( ); student= new biodata[n]; for(i=0;i<n;i++) { cout<<"\nLast … |
| | [CODE]import java.lang.*; import java.io.*; import java.util.*; interface Batm { final static int minbal=500; abstract void withdrawl(); } class Bal implements Batm { int amt,cbal; Bal(int amt,int cbal) { this.amt=amt; this.cbal=cbal; } void withdrawl() { if(cbal>minbal) { cbal=cbal-amt; System.out.println(amt+" "+"withdrawn"); } else { System.out.println("bal nt sufficient"); } } } class Atm … |
| | bonjour, j'ai un probléme de compilation concernant un projet,malgré que j'ai un main class voici les erreurs: run: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory at com.anthonyeden.lib.util.XArrayList.<clinit>(XArrayList.java:86) at com.anthonyeden.jnm.JNM.<clinit>(JNM.java:174) Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) ... 2 more Could not find the main class: … |
| | Hello, I'm trying to insert values from a form to a table (employee) on my database using prepared statements. From what I can tell the connections are fine, am able to query the database (as shown in the code to check the user type of the current logged in user). …  |
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