36,051 Topics
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| | hi i need the code to calculate the euclidean distance by reading a yeast dataset file when the calcute button is clicked it show the distance between different points in another frame  |
| | This is my Problem, Please Help me :( The Library class would include data members such as ID, Date of Aquisition, descrition, number of copies, title and instance method such addItem() and retrieceItem() also accessor and mutator method aree needed to access data members. These are variables and methods common …  |
| | This is a part of my code. String name=sc.nextLine(); int no=sc.nextInt(); The problem is if I write sc.next() instead of sc.nextLine() then i can pass only "james" not "james watson". when i write sc.nextLine() then it takes integer not string.Why is it so? Please Help!!! |
| | hi i need to create a batch file when it is double click it should run the code  |
| | having a little trouble trying to convert this pseudo code into python, could any help receiveFile () { lastblock := 0 newblock := 0 ; repeat repeat event := getFrameFromUDP(m) ; case event of data : newblock := getBlockNoFromFrame(m) ; transmitAckOverUDP(newblock) | timeout: transmitAckOverUDP(lastblock) esac until newblock==lastblock+1 ; lastblock = …  |
| | / // Clipper.java // // /** * Object for performing clipping * */ public class clipper { /** * clipPolygon * * Clip the polygon with vertex count in and vertices inx/iny * against the rectangular clipping region specified by lower-left corner * (x0,y0) and upper-right corner (x1,y1). The resulting …  |
| | Hello, Iv recently just started using javafx and i am struggling finding a way to access data from a controller class, at the moment i can do it using method.invoke, however it seems like more of a hack than a legitimate clean option of accessing data from a controller class. … |
| | Hello I'm planning to create a java application which calculates ip address just like this http://jodies.de/ipcalc?host=172.168.0.2&mask1=23&mask2= can you suggest an existing library, or tutorials so I could begin developing this? |
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 | Hello I'm currently working with my Java program here is my code: import java.util.Scanner; public class StringAct{ public static void main(String[]args){ Scanner inp=new Scanner(System.in); System.out.print("Enter string: "); String a= inp.nextLine(); if(a=="angel"){ System.out.print("Valid"); } else{ System.out.print("Not Valid"); } } } this program asks the user to enter a string, the string … |
 | HI! I want to write a constructor that will make a window (a frame). I want to be able to insert the height, width, position and window color. This is what I've written: public Window(String name, int height, int width,String c,String isActive,int PointX, int PointY){ setTitle(name); setSize(height,width); getContentPane().setBackground(Color.c); setLocation(PointX,PointY); setVisible(isActive.equals("active")); … |
 | Hi there everyone, I am a novice at java and this one has me stumped. This is the beginning of a tax calculator but I am getting irregular output from the getIncome() method. It starts fine, letting the user enter income figures, but on the third income entry or so, … |
| | I am a newcommer to java programming. i wrote this which compiles without error. when i put an int value like "5" it runs without any problem but when i puts a double value like "5.1" i get error. What is the problem? package javaapplication1; import java.util.Scanner; // Scanner is … |
| | Hello I am looking to make an application that performs basic data analysis techniques. I want to read and write into excel files, any pointers will be much appreciated! thanks! |
| | Hi, I am working on a java web application using Spring MVC framework. The application is running fine. I am writing some JUnit test cases for some of the pojo classes inside the webapp. I created a separate source folder 'test' which is in parallel to the src folder. I … |
| | This is probably a rather simple problem, I haven't looked at any Java in some time and am having trouble with this. First off, here is my program: it's very simple, because I cant even get past here without getting several errors. On Line 6, it says "unreported exception FileNotFoundException; … |
 | I was working on a project on netbeans and came across a problem with netbeans. The netbeans was showing the error repeatedly as "duplicate class". eventhough there is no duplicate class in the project. After so much frustation , i realized that this is netbeans bug. After doing some search … |
 | I am going to begin learning Java but I want to get a book (2-3 books... one being easy, intermediate, and advanced). I don't mind buying the books (the price doesn't matter either). What are some books that are most perfered by you guys? I currently i am learning it … |
| | Hello. I have this code from http://zetcode.com/tutorials/javagamestutorial/sokoban/ and I want to change the image of the baggage when it's on the right place. Do you have any idea of how should I do this? |
| | Hi! I am supposed to write a programm for making a window.First of all, I must make a window with some given default values. Below is the code that I have been given as a template public class Window { private String name; private int height; private int width; private … |
 | Hi I am trying to use axis with Tomcat. I am trying to execute AdminClient of axis. I am getting the following error. I get connection refused exception, i donot understand connection to where is refused :sad: Can anybody tell me where I am going wrong. Thanks in advance Srinivas … |
| | Hey guys, yes the title sounds funny, I am working on this project for a special someone, and I want to ask her out by writing her a simple program. I am having some trouble though with the execution of this idea. I have a pseudo code ish plan in … |
| | Hello everyone... :) I am a student and I have a project to work in but I dont know how to do it.. I have to create a database of the students of the school... I have to include name, marks, date of birth and i dont know what else... … |
| | HI, Looking for a solution to add my jar file to windows startup folder programatically by itself. Batch scripting may do the task but i dont want to use the batch. The jar itself should be added to windows startup folder programatically when it is clicked for the first time. |
| | How do I configure the date format independently for each of my date fields? For example, let's say I have a CustomerOrder class with more than 1 java.util.Date fields in it. I need to be able to render like this: <customerOrder> <orderDate>2013-01-04T20:50:42.769Z</orderDate> <user>Bob</user> <state>CO</state> <estShipDate>2013-01-04</estShipDate> </customerOrder> So one of the … |
| | Hi! I'm having a project where I must give 2 integers and divide them. I must use the NumberFormatException to make sure that those two numbers are only integers( and display a message when they aren't) and the ArithmeticException to make sure that the can be divided (and display amessage … |
| | following the article title, I'm dealing with octave, it goes right on command line. but I need to build GUI for my program to easier interface with people. then I chose Java to build GUI. my problem is to connect my GUI java to Octave. Anybody has ideas to do … |
| | I am interested in some idea how to search term from a URL file such as google. Example if I look for a term call "LOVE". How can I find all the URL associated with that term? I do know how to connect to the URL, but I am not … |
| | the task is : A. Write a method public boolean single (int [] values) receiving a full array values ​​with numbers, and returns true if the array is an organ that appears only once in the array, and false otherwise. For example, for the array {3, 1, 4, 1, 4, …  |
 | Had a bad uninstall of Java and now when trying to reinstall 7u10 I end up with the following dialogue: "This software has already been installed on your computer. Would you like to reinstall it?" "Yes." "This action is only valid for products that are currently installed." /end Repeat, ad … |
 | I am creating a simulation of a virtual video player (something like a very basic version of RealPlayer or Window Media Player). All the codes given below are error free. This is the main class: VideoPlayer.java This is the video player GUI (this frame is not resizable and the X … |
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| | hey, Im having a problem adding a javafx Canvas node to the scrollpane node. Im using the **.setcontent(canvas)** method of the scrollpane and there are no syntax errors. The Scrollpane does expand in width (hbar appears longer) but it still looks empty. I know the canvas is working correctly as … |
| | I need a programme for my mom's business inventory. I tried to download Dev-C and Visual Basic so I could make one, but after downloading it, the software would not open completely in the computer. |
 | //Why do I have to use following code to get a column number: ListSelectionModel ks = tabel.getColumnModel().getSelectionModel(); //Rowselection does not require a special row selection, I can get a proper row number with: ListSelectionModel ss = tabel.getSelectionModel(); |
| | How to print reports in a Netbeans 6.9.1 for making a website.Please answe me in detail |
 | Hi all, **First of all please read the full article and then try to suggest me...** I want to make a java project on streaming video encryption. Where i will use two PCs 1 act like a media server and other act like a client. So a video file (example.avi) … |
| | I have a new game item in the menu bar, was wondering if anyone got suggestions on how to accomplish that! Thanks :) |
| | What are the steps in normalization of grey scale image.  |
| | Hi, sometimes when I run my application the cmd pops up with the following list of errors! I am sorry to just drop them like this but I dont know how to deal with them, as the application is working just fine! Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException at javax.swing.LayoutComparator.compare(LayoutComparator.java:75) at … |
| | Hello, does anyone know how to draw a road within a Jpanel, and check if the road is rightly placed within the edges? |
| | public void paintItems() { ArrayList inRoomItems = ((Room) scenery.getCurrentRoom()).getItemsArray(); Point origin = new Point(380, 10); int layerNumber = 50; int numberHorizontally = 0; int n=inRoomItems.size(); for(int i=0; i<n; i++){ image = new JLabel(((Item) inRoomItems.get(i)).getImageIcon()); imagePane.add(image, new Integer(layerNumber)); image.setOpaque(false); image.setBounds(origin.x, origin.y, 100, 100); origin.y += 90; numberHorizontally++; if (numberHorizontally % 3 … |
| | how to retreive pixels of a gray image into an array? please provide some java code. . . . . . . . . . .  |
| | I need to work on error handling and recovery for the World of Zuul. I was wondering where usually try catch exception should be used, which processes that need them? I know that I have to use them for opening and writing to a file,,, |
| | hi friends java does not support multilevel inheritance. what is the reason behind this?? is this for security reason??  |
| | how to change image when button is clicked? my gui is consisting of three Button(NEXT,PREVIOUS,AUTO-CHANGE) and 1 Jcombobox. when you drop-down combobox list of image is shown.so i want when i clicked on "next" button image of jcombobox should be change. |
| | Hello all. I'm currrently working on a GUI that needs to support dragging some application-specific objects from a selection area onto a work area (JPanel). It's currently working in a "click where to place the object, then click the Add button" mode, but that's not good enough. The obvious approach … |
| | I have created a simple java file on desktop..When I am trying to execute it using cmd(with all variables set) then it is getting compiled but during the time of "java Filename" shows "main not found".This file is getting executed in eclipse and netbeans..What could be the reason for this??? |
| | **edit** I just realized that Im on a single core machine atm (stupid work machine), so theortically the server isint actually executing on the CPU 50% of the time (while the client is running), so packets would be lost right? Or is there something else im missing alltogether? Ill post … |
 | I am trying to write a selection sort, but I am getting a outofbounds error. How do I fix this? public class SelectionSort{ public static void selectSort(int[] arr){ int least = 0; for(int i = 1; i < arr.length - 1; i++){ for(int j = i + 1 ; i … |
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