32,199 Topics
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| | Hello fellow developers, Let me just start by saying I have had an abnormal start to developing. I started first with HTML > PHP > Java. I don't have much experience with Java but I feel quite confident in making PHP applications. I have already searched the forums but nobody … |
| | As we know [LIST] [*]ServletContext [*]HttpSession [*]HttpServletRequest [/LIST] are interface in JSP SERVLET api of Java..! We repeatedly use it in our code for different purposes, but i am still confused where and in which class all abstract method for given interfaces are implemented ? Like setAttribute, getAttribute , removeAttribute …  |
| | [CODE]RequestDispature red = request.getRequestDispature("xyz"); red.forward(req,res);[/CODE] in this simple example RequestDispature is INTERFACE..! "red" is reference for that , but whose instance it actually holds ??? "forward" and "include" methods are of RequestDispature interface...but where they are implemented ??? in which class ?? which class implement this interface ??? Can anyone … |
| | Modify the Inventory Program to include an Add button, a Delete button, and a Modify button on the GUI. These buttons should allow the user to perform the corresponding actions on the item name, the number of units in stock, and the price of each unit. An item added to … |
| | I got dinged points for these: Instructor wants 1. The class is divided into multiple methods, mentioned a Constructor instead? 2. The toString method is included in the Card class to return the face and suit. What did I do wrong? How do I fix it? I am pretty lost … |
| | Hi, so I'm new with Java and the programming thing. Here's my problem. I need to do an errortrap without using a loop and creating a method solely for errortrapping so I figured i need to use try and catch statements but I'm not sure how. Basically my problem is … |
| | Hi, I keep getting the error message "Missing return statement" after my if else controls. I have return controls, I'm just not sure if I can implement multiple returns. For example, I am trying to create a method in which the middle value of a sequence of numbers is returned, …  |
| | Hi, I am a complete newbie when it comes to programming, the only real knowledge I have was when I created a program 3 years ago in Visual Basic. I guess I know the theory behind programming concepts but have no idea what to do in Java. Not sure if … |
| | Hi, I am trying to make an array to read txt files. I have hard coded it to 3 for the array but I would prefer for it to be able to read the txt files to see how big the array should be. I have implemented some code to … |
| | Hi guys, I want to find the sum of numbers(inclusive) between TWO integers inputted by user. Example: if user enters 1 and 4, then it outputs: Sum = 10 I just started my code: [CODE]public static void main(String[] args) { int number1 = 0,number2 = 0,Sum = 0; Scanner input … |
| | I don't know what am I doing wrong, When I input number of courses it won't loop again just once? What is wrong with the code? Thanks [CODE] // EX 3 import java.util.*; // program uses class Scanner public class ComputeGpa { public static void main(String args[]) { // create …  |
| | Hi there, I am currently studying Java just over six weeks and am a novice. I have been give a question to do, the question is... Theatre Ticketing System Write a program that reads ticket details from the user and outputs those details in the form of a Theatre ticket …  |
| | I want to return the value of i, but I don't know how. My code is: [CODE]public int indexOfFile(String filename) { int value=0; for(int i=0; i<DRIVE_SIZE; i++) { if(drive[i]!=null && drive[i].getName().equals(filename)) { value= i; }else{ value= -1; } } return value; }[/CODE] so I want the value of i, but … |
| | [CODE]import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.methods.PostMethod; public class sslRequest { public void run(){ String url = "https://pipeline.sbcc.edu/cp/home/login"; try { HttpClient client = new HttpClient(); //client.getParams().setParameter("http.protocol.single-cookie-header", true); // client.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY); PostMethod method = new PostMethod( url ); // Configure the form parameters method.addParameter("user", "username" ); method.addParameter("pass", "password123" ); method.addParameter("uuid", "********-f08d-4d64-aeef-************"); // Execute the POST … |
 | **Despite how long this looks, I know it is very simple, I just added lots of details, but I know the issues was super easy the last time I dealt with it a year ago, I just forgot how I fixed it. I think Ezzreal (moderator on here) showed me … |
| | Hi, I am having a bit of trouble finding a way to check a string for the highest and lowest number. Example: I would have a: [CODE]String example = "1 3 5 9 4 3";[/CODE] And now I would have to check which is the lowest number and the highest … |
| | First i create simple claculator.but now I am trying to change it to RPN calculator by using stack.Can some one help me because I don't know alot about stack.here is my codes so far. [CODE] import java.util.Stack; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.util.Scanner; public class CalcGUIPanel … |
| | I am btech cse student final year. I have more eager to develop the projcet on java platform but I dont know how to initiate and what books I have to read. Please suggest me some tools and advices for developing the project in java |
| | PROGRAM GETS COMPILED...BUT GIVES ERROR ARRAY OUT OF BOUNDS...PLEASE HELP AS SOON AS POSSIBLE !!! import java.io.*; class Evaluate { char postfix[]; int stack[]; int i,a,b,c,top,n; BufferedReader input=new BufferedReader(new InputStreamReader(System.in)); Evaluate() throws IOException { System.out.println("ENTER ARRAY SIZE"); n=Integer.parseInt(input.readLine()); postfix=new char[n]; stack=new int[n]; top=-1; i=-1; } void readpostfix() throws IOException { … |
| | Ok this is driving me absolutely crary! I'm trying to add a static method Account consolidate(Account acct1, Account acct2) to my Account class that creates a new account whose balance is the sum of the balances in acct1 and acct2 and closes acct1 and acct2. The new account should be … |
| | Hello! I create a class which extends Thread. I can start the thread with run() method but the new thread does not runs parallel on my main application. I try the start() method which runs perfect and parallel to my to my main application. -Here i could not understand what … |
| | Hey everyone, I have a quick question about some Java code. I need to write a method that fills an array, with a few conditions. The method I'm writing is called readArray. There are [U]two[/U] arrays, one called "states" and the other "capitals". I have to fill both these String … |
| | hello all i just learn java syntax to extrac jar file we command : jar xf jar-file but there no information where the extracted files will be located and what is the sign if the command successfull or not any info ? thank denny |
| | Hello Dear Brothers and sisters How are you................? I'm Student of bscs in 6th semester i write three programs but all of these are giving errors and i'm not able to findout probelm. but i thing problem is some where with CONTAINER please check all these Thanks [COLOR="Red"]First One[/COLOR] [CODE]import … |
| | Hello - I am a student who bis mid-semester in an OOP course, with zero programming experience. I am trying to understand the concepts but this stuff is tough....I have an increased level of respect for all of the developers out there! Here is my question..in the code i am … |
| | I am trying to create an array of a custom object and I think the error I'm running into is that the objects within the array are not initialized prior to use (its a run time error, so i'm not entirely sure). The part that doesn't make sense is, if … |
| | Hello. What is the best way [an a correct one] to check a value, lets say I need a user input in a certain range. Could I place this check inside a setter method? My setter would than be a boolean return type instead of void? Are there some "laws" … |
| | This program simply creates an array of movies with a star rating for each one. My problem is, I want to have code that adds the contents of the array if the movie is the same. So for my example I was using Frozen Ground as the movie. In my … |
| | I'm using a horizontal JSlider. 1. The thumb slider is pointing [B]down[/B], and the ticks and labels are [B]below[/B] the track. How do I reverse this? I want the thumb slider to point [B]up[/B], and the ticks and labels to be [B]above[/B] the track. 2. How do I increase the … |
| | The source is available at [URL="http://code.google.com/p/java-cli-api/"]http://code.google.com/p/java-cli-api/[/URL]. It is not yet in the Maven Central Repository, but I did post the initial 0.0.1 release on the Downloads page if you do not want to check out the source. If anyone has comments/critiques on it, I would love to hear them. The … |
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