36,051 Topics
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| | hi.i realy need help am a new beginner in java.so i have been trying to do a code in java that returns the largest counter,refering to my libraries.so i was trying to invoke the method comparTo,so i dont know how to use it to compare all counter arrays so that …  |
| | plz someone give me a code of sudokou solver using backtracking algorithm as console app |
| | My code is getting a small error that is refusing to let me entire code compile. Take a look. //THIS IS ASSIGNMENT 4, MAIN METHOD import java.io.*; //to use InputStreamReader and BufferedReader import java.util.*; public class Assignment4 { public static void main (String[] args) { // local variables, can be … |
 | Hello All. I am having 2 problems here with my code. I will start off with the video code first. The video code should capture 20 seconds of the screen at 50fps, however, when I generate it, it generates a 1 minute 7 second video, and I am not sure … |
| | I have a file with ints like this. 1 2 3 4 5 6 How to read first int from file? How to read second int from file? How to skip first line and but rest in 2d array? This is what I have so far. I am not sure …  |
 | I'm doing a quiz game using netbeans. I've already done the randomization of questions. The problem is, how do i keep a question from repeating itself? ex: chose correct answer --> questionrandomizer comes in --> next question appears but it's the same question earlier here's my code: package kiddiequiz.scienceforms; import … |
| | I have to display the mortgage payment amount and then list the loan balance and interest paid for each payment over the term of the loan but my output isn't changing. import java.text.DecimalFormat; import javax.swing.JOptionPane; public class MortgagePmt { public static void main(String[] args) { int term; //Term in years … |
| | My entity class: @Entity @Table(catalog = "emp", name = "person") @XmlAccessorType(XmlAccessType.FIELD) public class Person implements Serializable { private static final long serialVersionUID = 1L; /** */ @Column(name = "ID", nullable = false,length = 50) @Basic(fetch = FetchType.EAGER) @Id @XmlElement String id; /** */ @Column(name = "ADDRESS", length = 50) @Basic(fetch …  |
| | hi I am trying to build this game. what i have been trying to build for a long time now. it is a multiplication java game that need random numbers to generate it goes like this difficulty level-easy: this difficulty level easy has 3 rounds. the student must be tested … |
 | I have a samsung 320gb HDD. Recently i am fatching a boot failour. I am trying to give windows. But a massage swing "a disk error occourer" and can not reboot pc. Can anybody help me?  |
| | I have a class where there are a few `static final String` variables that have few values that repesent color values. The class is basically used to get the color values. Is it better to convert this to enum? public class Color{ public static final String GRAY50 = "#808080"; public … |
| | hi I am getting this an java.lang.array index out of bound exception: 2 error - I am wondering if this is where am getting it. look it over many times, and I know you all are tired of me but am learning. I like the array but it can be … |
| | Hi, i have form in my jsp , which when submitted ,calls javascript which will inturn submit the form , this is working fine in IE. but when i submit from chrome , i get below error. -version:2.5]] Servlet failed with IOException weblogic.utils.NestedRuntimeException: Cannot parse POST parameters of request: '/integration/r5/wfsworklist/WFTaskUpdate' … |
| | I have a problem with a project i'm working on, and I was wondering if it was possible to do what i'm thinking. Basically I have a simple mathematical GUI. I want it to take 2 inputs multiply them and output the answer. I am doing this all through the … |
| | Hello All i'm new to jsp developing and i'm working on a site contain news page and allows user comments . i already do it but having 2 problems first that i have to refresh after submit comment to show comment second that every time i refresh the comment is …  |
| | I have an android application where user will input data about car. When they are done, they will press a button to sync their data. That is, on pressing the button it will call a rest webservice (Jersey) to synchronize the data with the server which will store the data … |
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 | I'm working on a simple encryption program (for school). It is not currently "homework" just FYI, I'm just practicing the examples in the book. It uses a Caesar's Cipher method (an alphabetical shift). I have not tested this code very much. If something is wrong with it I probably don't … |
| | **I'm using netbeans btw if you notice the long code for the GUI** I'm doing a quiz game. The questions are randomized. My problem is, the randomized questions do not appear on the questionLabel (JLabel Variable). I don't know what to do. Help? /* * To change this license header, … |
| | Hi there, I wondered if some one would be able to put me through with this, as i am a newbie in Java. I have the following text file named dvdifo: *Donnie Darko/sci-fi/Gyllenhall, Jake Raiders of the Lost Ark/action/Ford, Harrison 2001/sci-fi/?? Caddy Shack/comedy/Murray, Bill Star Wars/Sci-fi/Ford, Harrison Lost in Translation/comedy/Murray, … |
 | String contentType = request.getContentType(); if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) { DataInputStream in = new DataInputStream(request.getInputStream()); int formDataLength = request.getContentLength(); byte dataBytes[] = new byte[formDataLength]; int byteRead = 0; int totalBytesRead = 0; while (totalBytesRead < formDataLength) { byteRead = in.read(dataBytes, totalBytesRead, formDataLength); totalBytesRead += byteRead; } String … |
| | I need to fix a minor error in my assignment. The prompt is: Assignment #2 will be the construction of a program that reads in an unspecified number of integers from standard input, performs some calculations on the input numbers, and outputs the results of those calculations to standard output. … |
| | When I run this I get an error, it's like it's not reading the printf and honestly I have no idea what else to do, can someone help me? import java.util.Scanner; public class MyCarPool2 { public static void main (String [] args){ //Declarations final int WEEK = 5, MONTH = …  |
| | What is difference between developing website using Java and PHP?  |
| | hi james/anyone/stultuske I am again trying and practicing my java. I am doing this payroll program which include doing methods and array and have no idea where I have gone wrong again i have debug it but inno me, cant find the error and it is there somewhere anyway here … |
| | Hi All, I have a situation where i need to retrieve parentpath from childname in JFace Checkboxtreeviewer. By using below code, i can get both the path seperately. getCheckedElements() - child elements getExpandedTreePaths() - parent elements How i can map childelements with parent? here i get both seperately. When i … |
| | Hi All, when i click the save functionality my request is processing and values are stored in database.but the request is coming from chrome browser its not processing and redirected to my error.jsp page.could you please help for this issue. |
| | Hi All, I have a JSP which contains a form , when the form is submitted the control comes to servlet . this is working fine in IE. but in google chrome it going to error page . When i debugged from the develper tools , i found one difference … |
| | Noob Question. I need some clarifications with using class as a reference datatype or if you have any links that direct to a straightforward explanation,i'd highly appreciate that. (I had been surfing the net for hours, read some books but the explanation is either vague or just an introduction.) |
 | While referring to a particular course I came across the following code to retrieve the current day: int julianStartDay = Time.getJulianDay(System.currentTimeMillis(), dayTime.gmtoff); long dateTime; dateTime = dayTime.setJulianDay(julianStartDay); day = getReadableDateString(dateTime); private String getReadableDateString(long time){ SimpleDateFormat shortenedDateFormat = new SimpleDateFormat("E MMM d"); return shortenedDateFormat.format(time); } My doubt is why are we …  |
| | what are the things a new developer should keep in mind while writing a program? please reply. |
| | How do i write a simple login page using Java programming language with the following components -JLabel -JTextField -JButton |
| | Hello All, Can anyone provide me the sample program of JFace Treeviewer. As i google it but cant find the right example. Any links with Simple example. Kindly help me out; Thanks in advance. |
| | HI guys ..... i m trying to create a search engine through java..... is it possible?? if yes then would you please tell me how....?? |
| | public Set<Product> getProductsByPriceFilter(Map<String, String> filterParams) { Set<Product> products = new HashSet<Product>(); String l = filterParams.get("low"); String h = filterParams.get("high"); BigDecimal floor = new BigDecimal(l); BigDecimal ceil = new BigDecimal(h); return products; } I have discovered an interesting phenomena. I have filterParams that should <String, String>. However, if I use filterParams.get … |
| | Advice please: Which of these 2 methods looks better ? like professional code? Both methods are doing the same thing(simpleUpdate). Except the way am passing the parameters are different. The method manageJob is used to call the method simpleUpdate to update the status in DB. public <T> void manageJob(Class<T> entityClass,String … |
| | Hello, After making a database connection to java, I have been trying to populate my JTextFields and having a hard time to do so. Can anyone give me a quick example of what class or method am i suppose to use in order to get the results? After that my … |
| | hii ^_^ I have a problem which is I have to delete a book when( I enter it's name and then press the delete button) and that book has been saved as an object in an array of list, and then written to a (txt )file.. once I press the … |
| | # PLEASE some one help me to explain the code. This code is for a ScientificCalculator # package calculator; import java.math.*; //@author Hadisur Rahman public class ScientificCalculator extends javax.swing.JFrame { private boolean zerodisp; private boolean decdisp; private boolean dgrrad; private boolean sh; //sh means =shift private byte op; private double … |
| | hi :))) I want to ask about sth wich is > I have to write a programme using netbeans ..which I'm new with it ! that programme should let the user to enter the book name ,serial num. ,price ..etc in text fields , and I have buttons that let … |
| | Is it better to log `exception` or `exception.getMessage()`while logging an info log or an error log. I'm pretty sure that is related to the context but I'd like to know from a technical perspective on which would be better for any application or if its all the same. |
 | So im doing an MMO, i was progressing alot, 6 months progrramming this thing. The problem is that i was testing offline my game, today i have the brilliant idea to port foward my server and make it online, i knew it was gonna be slighty slower, but its awful! … |
| | I recently faced a problem when I was trying to run a junit test in eclipse. I was getting a ClassNotFoundExcpetion. So, I googled a bit and tried out a solution where I had to move the JRE System Library below the rest of the jars and it worked!!! But …  |
| | hi, i want to attach a handwritting pad(ivista tablet) to my java project. Any suggestion or any method how to make it possible. I tried the google but doesn't find any help  |
| | the process cannot access the file because it is being used by another process java I use this code to transfer a file to an other Files.move(Paths.get(file_picker1.getText()), Paths.get("random location\\.png")); I understand that I have to close it. but Im not finidng how to do that. search in google but no … |
| | I want to reduce the number of if statement in my code. I need some advice on how to do this. I have a simple form, when I click submit, it trigger a workflow for approval process. public void initiateWorkflow(){ //some code here //workflow is started } Next, when the … |
| | Im having a problem with updating data in SQLite this is the full code who execute after pressing the button try { PrintWriter writer = new PrintWriter("d:\\"+LBL1.getText()+"\\"+TL3.getText()+"_"+TL2.getText()+"_"+TL4.getText()+"_"+TL5.getText()+"_"+TL1.getText()+".txt", "UTF-8"); writer.println("Invoice Number = "+TL1.getText()); writer.println("Seda = " +TL3.getText()); writer.println("Date = " +TL2.getText()); writer.println("Documental Class = " + TL4.getText()); writer.println("Status = " + … |
| | hi james remember I told you that i have another program for you to help me with, well here it is something is wrong again with my calculation. i have debug it, run through and but still cyah see it. double gross_sal , netpay , hrswrked = 0, rate_of_pay = … |
| | I am using eclipse, Java, and seting up Ajax-DWR. When I run my program nothing happens. I belive This is cause by warning in my xml file. I tried looking on google but didn't found any thing. ## files Path, jar files, etc...: ## Take a look at the attached … |
 | tl;dr: Looking for a java library to solve equations. Suggestions welcome. I'm looking to write an app for the sake of writing an app. I figured that, as a firmware guy with minimal EE hardware training, a good practice app would be one that acts as a helper for EE … |
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