32,204 Topics
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| | When i compile my java programs (.java) they all compile into .class file. when i try to run the class file with this command : " java C:\Users\User\Desktop\JavaProgram" It gives the following error: "Error: could not find or load the main class" how do fix this and how do i … |
| | I have ecidentaly set the .class files to open with notepad everytime. How do i set them back to defualt? i have tried to manually browse to find with what it should open but i dont know with what it should open? Thanks... |
| | I am developing an java application for for login autentication form, I have pre saved username and password in my database. When admin enter his credetials, it validates to my DB and gives access to actual application Now, my application is used by admin and database is managed by DBA. …  |
| | i have a program that converts a text string into a hash sequence using parseInt(). but parseInt() keeps throwing a NumberFormatException. any ideas why? is it becuase i'm using <= instead of = in my for loop? EDIT: ingnore r. it's not being used. sorry. package test; import java.util.Random; import … |
| | Hi, I need to write a program which can decrease the free disk space. For eg, if the free disk space is 5GB, the application should ask the user how much space do you want occupy. Application should take the input eg, 2GB and decrease the disk space to 3GB. … |
| | Hey guys, I'm trying to develop a simple tool. I'm having but I'm having trouble accessing some swing components. My gui basically has a jtabbed pane with two, jbuttons beneath it. Each tab is identical except for the title, it has a jtextarea and two jbuttons. These buttons perform an … |
| | So basically I have created a linked list which allows me to enter numerical data into a list and for it to be sorted, added to and deleted but I need to add text into the list as well but not sure how to go about it I've tried changing … |
| | Can someone help me with the code for this assignment i have for school using dr java > Project Assignment:Write a method drawFace() which will draw a face on the picture. Your face should have eyes, mouth and text beneath it that provides it with a name. |
| | double population = 7000000000; long population2 = 7000000000; > > I have to write down world population, so i used both double and long primitive types. However, both of them says that this number is out of range. What can i do with this? i made a google search but … |
| | This post about J2ME in Netbeans. Actually I'm new to mobile development and so interest to learn it. I want to create a jar file and should be attached database to it. (Netbeans has built in database creating facility, which i want to use) There are a lot of codes … |
| | The method I am trying to write is by passing two arrays, one an array of integers and boolean array, then find the smallest, then next smallest, then next next smallest, etc values in the array "a". Outside of this method, the boolean at the corresponding index to smallest value … |
| | Im trying to create a deck of cards using enums. I already have my enum declared, but I'm stuck in how exactly to create the deck of cards using a boolean array. So far i tried to initialize my constructor, but I don't know what direction to take now. Any … |
| | Plz can anybody help me.i want to store some records in files.i m working on a project.my teacher told me to use tokens.i dun have any idea about that.plz help me thanx in advance |
| | Hi , I have implemented the Hashtable and enumeration concepts in java.The program is executed fine but i have a doubt.When i try to print the keys and elements in the Hashtable by using enumeration ,it start prints from the second key and second element. Did any one know why … |
 | I got this jar creator java code in the internet. It creates a nice jar file out from your java codes but there is a a problem. If you you run the jar file, it creates an error because the manifest is empty. I think there is a missing line … |
| | i have a problem with execute the excel sheet in java code and also problem with execute asa same as pivot table in java |
| | Hey guys. I am new at programming and would appreciate any help I can get. I want to make a program that reads the HTML code of a web page, and writes a specific line into a document. So for example, I want my code to read the source of … |
| | Hi everyone i do not know how to do this home work +SearchFriends( char ): boolean This method is used to know if there is friends exist in friend list whose name starts with given char. For example if you called the method SearchFriends (a) and there exist a friends … |
 | I am using such linked list: private Class Node { public int Num1; public int Num2; } LinkedList<Node> list = new LnkedList<Node>(); Node n = new Node(); n.Num1 = 10; n.Num2 = 100; list.Add(n); but now I don't know how to access Num1 and Num2 using my LinkedList. For example, … |
| | here code for make new file .. how i can make it to insert data to file and open it /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package files; import java.io.*; import java.util.Scanner; public class Files{ public static … |
| | hello sir i have python code can u convert it into java . code is below..... plz help............ # Ad-hoc algorithm for copy-move forgery detection in images. # Implemented by - vasiliauskas.agnius@gmail.com # Robust match algorithm steps: # 1. Blur image for eliminating image details # 2. Convert image to …  |
| | import java.util.Scanner; public class Interest { public void determineInterest(){ Scanner input = new Scanner(System.in); double amount; double rate1 = 0.05; double rate2 = 0.06; double rate3 = 0.07; double rate4 = 0.08; double year; double principal = 1000; System.out.println("Please choose your bank below:\na)Ziraat Bankasi\nb)Halk Bankasi\nc)Is bankasi\nd)City Bank"); String bankname = … |
| | Does anybody know any tool that can transform automaticcally a java-program into uml? |
| | client.java:8859: error: class, interface, or enum expected person.updateRequired = true; ^ client.java:8860: error: class, interface, or enum expected person.hitUpdateRequired = true; ^ client.java:8861: error: class, interface, or enum expected person.currentHealth -= misc.ran dom(30); ^ client.java:8862: error: class, interface, or enum expected } ^ client.java:8867: error: class, interface, or enum expected … |
| | i have to do a pyramid with a pattern like this [iCODE] 1 1 2 1 1 2 4 2 1 1 2 4 16 4 2 1[/iCODE] i just realized dani web didnt take my center pyrmaid thing it moved to the side no matter what spacing i did … |
| | Hey folks. I'm trying to make a new Fruit object each time aMethod is called. The new Fruit object's name must be unique. The problem is that the name of this Fruit object is the same name as one of the parameters of aMethod - this name is unfortunately the … |
| | hi .. i make this code .. but when i run it ..doesn't show whole output in window ..and its not show correct answer .. i can't find error / but its not worked welll /* * To change this template, choose Tools | Templates * and open the template … |
| | public static void main(String[] args) { Set<Point> points = new HashSet<Point>(); points.add(); --- how to add point of "Point" type cureAlgor(0.01, 3,points); } Point is a pre-defined class. I want to know what to wrtie in points.add(). Please help! |
| | Hi my codes works fine.When i key in ,for example, asdf 546,(f and 5 is separated by space), the programe rightly take it as invalid input ,however it takes asdf and 546 as separate type and return two "Invalid input".See below. I hav no clue why it does that oher … |
| | Hi i came up with the following code for my Assignment.It works.What i dont understand was the following code, the rest of the code i did myself. if ( value == 1 ) smallest = randomNum; Why do i need to assign value to 1? Rest of my codes System.out.println("How … |
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