36,051 Topics
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| | hey can any one help me in writing the code : Write a Java program that sorts given integers using threads I am not able to proceed ..What should i have in main function() |
| | A university wants to aumomate the parking area present inside the premise. Students and faculty members are required to buy passes in order to park their vehicals in the parking lot. The different types of passes available are : Cars : Weekly pass : 70 rs Monthly pass : 280 … |
| | Hi everyone... My boyfriend's birthday is on Saturday, August 13...and i wanted to do something really different this time...since we are 1,000 miles apart...i was thinking if i could write a program which would generate random messages which I would already have written in the code... i was thinking of …  |
| | Hey I am making a game and i can make the character jump, but i am trying to make the character land on an object. I am trying to do this with object collision but im not sure how. My code for jumping for an image with a certain height … |
| | am developing a typingTutor quite similar to mavis beacon. i have designed the keyboard which highlights the press key on the syatem keyboard whenever a key is pressed. the program has a screen that displays moving text which the use has to type to match correctly.my problem is how to … |
| | I have made this screenshot program in hopes of eventually making a screen recorder, but I am having trouble displaying the image for the user to see. I currently have it so that it displays and saves. When it displays it is blank, but when it saves there is a … |
| | I am using MouseRotate class of Java3d to rotate two cylinders. But when i rotate one cylinder the other cylinder rotates with it. Is there a way around this problem. Thanks. |
| | I'm a complete beginner when it comes to JSP, so I'm really not sure what I'm missing here. I'm trying to add some fields to a form in an existing webapp, but when I try to use html:text for my input fields, the complete form and the rest of the … |
| | Hi, I am trying to create a make file for a java project. It has a directory structure look like this: src folder [INDENT]-package1[/INDENT] [INDENT][INDENT]-java files[/INDENT][/INDENT] [INDENT]-package2[/INDENT] [INDENT][INDENT]-java files[/INDENT][/INDENT] [INDENT]-package3[/INDENT] [INDENT][INDENT]-java files[/INDENT][/INDENT] [INDENT]-package4[/INDENT] [INDENT][INDENT]-java files[/INDENT][/INDENT] I am new to makefile, but tried to create one according to some tutorials on … |
| | Hi Friends, I am stuck for passing values from drop down list of a HTML page to a servlet file for further processing. Actually i am developing a small model of "Railway Reservation System" for my mini-project. The problem is to how can i pass values from various number of … |
| | The below code is showing error i checked lots of time didn't find any error please help me. [CODE] class emp{ int id,sal; String name; emp(int id,int sal,String name) { this.id=id; this.sal=sal; this.name=name; } void show() { System.out.println("Name: "+name); System.out.println("Salary: "+sal); System.out.println("ID: "+id); } } class manager extends emp{ int … |
| | Hello everyone, i am new comer to web development & netbeans, i m a student. I have been given a task to create registration page with username & password, & after submitting this form it automatically stores data into databse, which can later be seen by admin only...or can be … |
| | hi there im just new with java i just want to ask can 1 dialog box contain multiple lines i min like this one JOptionPane.showMessageDialog (null,"\n "+EN ) ; somehow i want to add just like JOptionPane.showMessageDialog (null,"\n "+EN , "\n another messages here then" +DR , "\n and another … |
| | Can someone help me and complete this simple polynomial program(can be demonstrated using linked lists); [CODE]public class Polynomial { /* Constructs a new polynomial of degree zero */ public Polynomial() { } /* Returns an integer representing the coefficient * of the x^power term */ int getCoefficients(int power) { } …  |
| | what is the meaning of org.apache.jasper.JasperException: /carsar.jsp(1,1) The value for the useBean class attribute com.sarath.cars.CarBean is invalid. error?  |
| | Hi; I've been working on this for 2 days now and am hoping someone give me a tip. New to Java code so bear with me. I need to create 2 panels in a frame. Each frame must contain 2 images. Frame 1 must be a fixed width allowing the … |
| | I want to add sites snapshot in my project. The search made by me on internet revealed that this can be done with the help of js. The metods found involved links to sites that provide snapshots services and these are not heping me at all. So i have 2 … |
| | Hello, I am working on a program that generates 100 random integers and then sorts them into even and odd. When i go to compile the program, it tells me that it cannot find variables randonum, evennum, and oddnum. I'm new to arrays so i'm guessing i declared/ defined them …  |
 | Hey, I'm trying to catch the incoming request to my Tomcat server and redirect to another page (a servlet). I don't have Apache installed so no mod_rewrite will work (as I understand it). I need to redirect the incoming request aimed at a standard URL [url]http://www.somesite.com[/url] and send it to … |
| | I used one action listener for an array of buttons that do different things. Exploring methods. I am fairly new to java. I just made a tic tac toe program. I am hoping for people to look it over and tell me what they think, ways to make it better, …  |
| | I'm trying to execute the following code in netbeans & eclipse but without success. [URL="http://read.pudn.com/downloads150/sourcecode/comm/651136/NmeaConverter.cpp__.htm"]http://read.pudn.com/downloads150/sourcecode/comm/651136/NmeaConverter.cpp__.htm[/URL] Program has command-line parameter: -f D:\nmea.txt Eclipse says: [CODE]Description Resource Path Location Type `endl<<expression error> >' cannot appear in a constant-expression nmea.cpp /nmea/src line 358 C/C++ Problem `std::endl(std::basic_ostream<_CharT, _Traits>&)' cannot appear in a constant-expression nmea.cpp … |
| | String<ArrayList> selitems; String<ArrayList> cartitems; what are the possible mistakes? |
| | [code]import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.ServletException; import javax.servlet.http.HttpSession; import java.util.ArrayList; import java.util.StringTokenizer; import java.io.PrintWriter; import java.io.IOException; import java.text.DecimalFormat; public class ShoppingServ extends HttpServlet { String link; String[] books; String[] music; String[] computers; String<ArrayList> selitems; // JAVA.STRING.LANG doesnot take parameters error String<ArrayList> cartitems ;// JAVA.STRING.LANG doesnot take parameters error … |
 | I need to run some code written in Java from my personal website. How do I even begin? |
| | I am making a game where random obstacles appear. The obstacles will move towards you. I currently have this code to animate the obstacles. [CODE] for (int i = 0; i < obstacle.size(); i++){ // animate walls obstacle.elementAt(i).x -= 1; } [/CODE] My vector multiple instances of the Walls class …  |
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| | My panel's paintcomponent method draws a line based on the initial click and the current position as the mouse is dragged. Releasing the mouse leaves one line from the mouse press location to the mouse released location. The problem is. on the next click/drag, the old line disappears when the … |
| | Hello all. I have to write a java program that allows a user to enter an octal digit and output the binary equivalent for as many numbers as the person wishes using a direct access method. The error is that even though it compiles, the answer (the binary number) continuously … |
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 | Hey, I'm getting this error every time I run my program. I dunno what it means and how to fix it. [code] Uncaught error fetching image: java.lang.NullPointerException at sun.awt.image.URLImageSource.getConnection(URLImageSource.java:99) at sun.awt.image.URLImageSource.getDecoder(URLImageSource.java:113) at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:240) at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172) at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136) [/code] |
| | 1)DEFINITION OF DATA REQUIREMENTS Produce an itemised consigment note for each customer including -dimension,weight and price per parcel. -total weight and price consigment -number of parcels RESIDENT DATA -up to 2kg-£7.50 -up to 4kg-£8.00 -up to 10kg-£8.55 -up to 12kg-£9.10 -up to 14kg-£9.70 -up to 16kg-£10.35 -for each extra 2kg,up … |
| | [code] public class exception4{ public static void method(){ try{ exception4.method2(); throw new Exception("method throw"); } catch(Exception e) { System.out.println("method Exception caught"+ e); //throw e; } } public static void method2(){ try{ throw new Exception("method2 throw"); } catch(Exception e) { System.out.println("method2 Exception caught"+ e); e.printStackTrace(); [COLOR="Red"][B]//throw e; [/B][/COLOR] [COLOR="Green"][U]if include this … |
| | I need to know how I can set up a action listener for an array of buttons. I am trying to make a tic tac toe game. I am new to programming. I have seen someone on here ask a similar question but I could not grasp what they where … |
 | we are ordered to create a payslip in applet but I am not able to create one for I do not know compute the gross pay, net pay and total deduction.....also I do not know the relation of the days worked,overtime worked and overtime rate to the gross pay......what should … |
| | I have created my own payslip but then when I compiled it, they said that there are no more errors but I cannot view my output on the applet viewer............ is there something wrong with my code or is the viewer at fault here?? here is my code............ [CODE]import javax.swing.*; … |
 | I have problem starting tomcat now that I have installed macos lion. I get the following error in catalina.out : [CODE] Aug 7, 2011 4:12:01 AM org.apache.catalina.core.AprLifecycleListener init INFO: Loaded APR based Apache Tomcat Native library 1.1.20. Aug 7, 2011 4:12:01 AM org.apache.catalina.core.AprLifecycleListener init INFO: APR capabilities: IPv6 [true], sendfile … |
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| | [B]Could u tell me why the following problem is coming on running the program where im getting the out twice each time wen i shd get it only once , wen im entering a input im getting the menu twice[/B] [CODE]import java.io.*; class Television{ private String MANUFACTURER; private int SCREEN_SIZE; … |
| | plzz help me how can i do the 3 sorting in 1 program user input using bufferedReader plzzz... bubble sort slection sort insertion sort |
| | I am making a program where i have to write a recursive function that reverses a string. I am a new programmer and need help. The function should return a String and take only one argument, also a String. [CODE]import java.io.*; public class RecursiveFunction { public static void main(String [] … |
 | Just wondering is there any way to modify Classpath in your program and force them to include a new directory in classpath ?? |
| | im not able to figure out the meaning of this piece of code: [code] public int void countTokens(String s) { StringTokenizer st= new StringTokenizer(); return st.countTokens(); } [/code] |
| | Am trying to create a JTable application but when i try to run the program in netbeans it bring an error on the addRow() and removeRow() and yet when i run it in the commandPrompt it works well what could be the problem. below is a snippet of the code …  |
| | Hi im trying to design a program that matches wildcards example the * , ?, [], {} etc but ive read that java has its own regex support I want to manually code the matching idont know where to start or how to do the program/ design it. Can you …  |
| | I want to have two textfields which will have the following validations 1) Both should be Integers 2) The value in one textfield should be a integer multiple of other I have used two JFormattedTextFields to this. This is what i have done till now [CODE] NumberFormat updateFormat,sampleFormat; updateFormat = … |
| | Hi, I desperately need help for my java assignment. I am required to make an encryption/decryption program using netbeans. It basically takes the users message and encrypts it into characters and vice versa for decryption. My teacher say it has something to do with using arrays. There are 2 main … |
| | Hi all I made a welcome.jsp page and included loginbox.jsp using<jsp:include> tag While loginbox.jsp is working perfectly (with database),but when i include it in welcome.jsp then it dosen't work!!!!Please help welcome.jsp[CODE]<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <title>JSP Page</title> </head> <style> .bc { background-color:#CCCC00; background-repeat: no-repeat; background-position:center center; } </style> <body … |
| | Hello, I have the current sample xml document below: [CODE]<Units> <category name="Temp"> <unit id="0"> <unit_name>celcius</unit_name> <fromFormula>inFrom0</fromFormula> <-- need this value <toFormula>inTo0</toFormula> </unit> <unit id="1"> <unit_name>fahrenheit</unit_name> <fromFormula>inFrom1</fromFormula> <toFormula>inTo1</toFormula> </unit> </category> <category name="Length"> <unit id="0"> <unit_name>feet</unit_name> <fromFormula>InLengthFrom</fromFormula> <toFormula>inLenghTo</toFormula> </unit> </category> </Units>[/CODE] Now, I am trying to retrieve the value "inFrom0" from the … |
| | help im new to this.... why are get method useful?? for example why write this: [CODE]public class name { private String yourname; public void setname(String Fname){ yourname= Fname; } public String getname(){ return yourname; } public void sayying(){ System.out.printf("hello %s", getname()); } }[/CODE] when this also does the same thing … |
| | So I'm creating a program that calculates the “Sum of Powers” after the user inputs two integers N and M. The sum of powers is computed as N^M+ N^(M-1)+ N^(M-2)….+N^0. But I don't know how to finish it. I'm kinda confused using return method, loops, etc. Here's what I have … |
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