35,618 Topics
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| | Hello I am unable to to edit a json file i need to add some updates but i keep getting Error: Parse error on line 8: ... "text" : " company name -----------------------^ Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '[', got 'undefined' I am trying to add a paragraph …  |
 | write in java language,to find the maximum,minimum andmean value of asset of floating point numbers to be supplied by the programmer user  |
| | there are no visible error in the syntax but when i run the application i keep getting the following error. i have been trying to fix it for hours and simply cant find the problem. the error that appears when running is; Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at javax.swing.JComboBox.setModel(JComboBox.java:292) at … |
 | My programs objective is to mkdir and ope dir. if I ever get it jarred up I would like to run it from a jump drive. [code] public static final String USERHOMEDIR = System.getProperty("user.home", "."); [/code] clearly this code will not be valid any more. Could this USERHOMEDIR be replaced … |
 | I'm working on a Grade Point Average Calculator. The user just have to Select the number of courses offered, then select the grade obtain in the different courses by choosing the appropriate grade from the Choice Box. The problem with my application is that, if the user mistakenly selects "A" … |
| | hi, how can I make the size of the array is equal to the number of elements in the array |
| | Could anyone help me in understanding what does below Python code do? Also please help me in converting it into Java. import random howMany = random.randint(0,1000) stats = {} for i in range(howMany): value = random.randint(0,500) stats.setdefault(value,0) stats[value]+=1 for item in stats: if stats[item] > 1: print item  |
 | Asalam U alikum I want to learn Java programming I have installed the jdk7 on my machine and i want to set the environment variables as it shows me that javac is not the internel or externel command.So can anybody help me |
| | Hello , I have a List<String> and I want to compare in a loop the elements. For example sth like : for (int i=0;i<theList.size();i++){ while (theList.get(i).equals(theList.get(i+1))) ... } I want to compare the next to the previous entry. Thanks |
| | Why Java is platform independent? And how to set path in Java?  |
 | Hi everyone , i hope someone helps me out. im working my way up step by step learning Java . but no one at the University is helping , they just give us the homework and we have to learn alone.and give the soltution at the end of the week. … |
| | Hello. Im new here. I have a question: I have this copy constructor here: /** Copy Constructor. * Since landscape is immutable in the scope of our project, you could * do a simple reference copy for it. * However, Fish and Plants are mutable, so those lists must be … |
 | Hello Ive come up with a stupid question that just needs a why What would this do? for (int i=5; i<2;i++) { System.out.println("What?"); } System.out.println("Who?");  |
 | Hi...! I'm Working on a Notepad project and i'm in menu->view->font but i don't have any idea how to write a function for it! can anyone help me?! thanks...  |
| | i have a enemy and spriteanimation classes. in Enemy class i have bufferedimage array with 4 different images. than i am creating a animation and storing in 'animationEnemyHit' variable. than i am starting and updateing the animation in method. the problem is that it keeps on loop for ever. i …  |
| | Hello This is a demo showing Java interacting with Daniweb's new API ( http://www.daniweb.com/api/documentation ) You introduce a member's name and it should show you the total number of posts he has made. Demo is a proof of concept: No bug checking, error checking, etc is in this code. In …  |
| | import java.util.Random; import java.util.Scanner; public class RandomDeck { String suit[] ={"Diamonds" , "hearts" , "spades" , "clubs"}; String face[] = {"A" , "Two" , "three" , "four" , "five" , "six" , "seven" , "eight" , "nine" , "ten" , "jack" , "queen" , "king"}; String cards[] = new String[52]; … |
 | hello i am working on a simple panting project that allow the user to select a shap from ComboBox then draw it on the panel but problem is when is choose any type of shapes and drawing it on panel no shape appear on the panel ?! here is my … |
| | 1. Given a length of wire P units long, where P is an integer, it is possible in some cases to bend the wire into an isosceles triangle(with two sides equal) where the lengths of all the sides are also integers. For example a wire of length P = 3 … |
| | I once did a project in a class that connected to a mySQL database, but now I'm using the jGRASP ide on a mac and the class files won't compile properly. In the project we added the files: Connection.class, ResultSet.class, Sql.class, and Statement.class to the directory (assuming it's the middleware). …  |
 | Ive been working on pathfinding algorithms for a couple weeks now and A Star has me stumped. Right now i am attempting to Pathfind over a maze in a matrix of the form boolean map[x][y][5]; where index 0-3 are the walls on the cells starting on the right with 0, … |
| | Hello, I have a set of fields which I need to save into my database, my problem is that the format with java and mysql doesn't match. I converted everything to String which works but I need to store the data as Date. As I will need to retrieve information … |
| | Hey everyone I was programing a small game and I am trying to figure out how to send an int value to a class and return a String from it. This is my code: This is my main.java class public class GamGUI { /** * @param args */ public static … |
 | hey there everyone. I hope you're all well. Alright, I am working on testing a project using Selenium. I know that this is a Java forum and not a Selenium one, but I am used to using this one so I am starting here. Plus, I am very confident that … |
| | I am learning to build.xml a project with eclipse ide. below is the MANIFEST.MF that I am creating. The build shows that the manifest is being written in the dir structure below. The dir META-INF (sibling to the src) contains this MANIFEST.MF [code] Manifest-Version: 1.0 Ant-Version: Apache Ant 1.8.1 Created-By: … |
| | Hi guys, I'm having trouble with my code and I'm kind of new in Java so I don't know what to do. I have to do a program with Buttons and each button has to take me to another class (I don't know if I'm being clear). For example if … |
| | hi folks, i want to develop a desktop application which will continuously receive text commands from a connected mobile device, via bluetooth rfcomm protocol. i went through hundreds of code examples, including jsr-82 bluetooth & obex api demos; but cannot get what i wanted. one of the popular examples that … |
| | Just some information about myself. I am a 42 year laptop technician returning to college majoring in an Application Development associates degree program at community college starting this summer 2013. I really need some information from the experienced programmers who have been in the job market market for a while. …  |
| | I have been stuck on this problem for a while. I can't figure out why it is skipping over the last part of my program where it starts double totalMoviePrice. Here is what I have: import java.util.Scanner; public class OnDemandMovieHits_AngelaBrasley { public static void main(String[]args) { String[] movieName = new … |
| | Is the following Code correct, for calculating Decimal to Triskaidecimal and Triskaidecimal to Decimal, I hope this code is not right import java.util.Scanner; public class converter { /* 1) Decimal To Triskaidecimal 2) Triskaidecimal To Decimal 3)Exit. */ public static void main(String ar[]) { int a, b; String s; System.out.println("Please … |
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