35,619 Topics
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| | Hi, I'm starting with Java and have an issue with how to use the classpath variable and where to put certain library. This is probably pretty easy but it's got to the point of driving me crazy. Now, I'd like to have my library, let's call it "mylib", under C: …  |
| | Hi I'm just starting out with OOPin JAVA and thought i was getting the hang of it but i've been given an assignment and it's got me stumped. here is the code i have been given [code=java] public class FrogCalculator { private Frog operand1Frog; private Frog operand2Frog; private Frog unitsFrog; … |
| | hello, im a beginner programmer in java (J2ME), is there a way on how to unobfuscate a java? and how to obfuscate it?? (J2ME) |
| | Hi all, I am having a problem with the synchronizing the threads in the classic produce consume thread example. Below is my code for it. [CODE]public class Magpie extends Thread { private TreeHole treehole; private int number; public Magpie(TreeHole t, int number) { treehole = t; this.number = number; } …  |
| | My method is not working for some reason, even though i have done in exactly the same way the books showed. Could you please take a look at it and let me know what went wrong? Thank you P.S. I tried to use DEBUG technique and it seems that the … |
| | I am importing three diff jsp files through foreach looping inside the parent jsp file. Three files are x.jsp, y.jsp, z.jsp for example. I want to extract the last file z.jsp from this loop and I need to put in to one seperate DIV element. How can I do this … |
| | Hi , I am using <logic:iterate> tag to iterate through a list of contents. When the List size is 1222, all the Contents in the List are displaying properly. When the size execdes 1223, the JSP is not displaying properly. I am not getting any exception also. I have added … |
| | Hello Guys, I'm considerably Newbie to any programming whatsoever, and i'm having to take Java for my computer Science requirement. I'm currently working on an homework assignment to write an application that reads the (X,Y) coordinates for two points. I also need to compute the distance between them using the … |
| | Can someone help me to make a program in java: 1. Generate 2 rows of 50 random numbers (int) from 0 to 99. 2. Search the numbers that appear in the first row, but not in the second, and numbers that appear in the second row but not in the … |
| | How to dynamically get the login name after logging in so that i can use it to extract values on myaccount.jsp?? Please help.. |
| | I am trying to develop an application for my phone that will communicate with my personal linux server. The phone application will not be java based but the server will be. The Server will be sending me information from my database to my phone. How should I package my data … |
| | Hi guys, I want to paint multiple layers of images onto one image. I'm going to be using BufferedImage for this. How would I go about painting these multiple images onto one (in essence creating a new image. sort of like a collage)? Would i get the graphics context and … |
| | Hello there, Im new in JSP Just want to ask, how I can force web browser to popup download box to download the .prn file that was generated by server? Assume that [CODE]fileName.getAbsolutePath()[/CODE] is the variable that hold the path for .prn file *** Im using pure JSP |
| | What is difference between include action and include directive? |
| | Hello all, I am having a problem in creating an image by using createImage() method when trying to load large files. FileConnection fc = (FileConnection) Connector.open("file:///" + path + "/",Connector.READ); InputStream fis = (InputStream) fc.openInputStream(); image = Image.createImage(fis); // I got the out of memory exception here. Are there any … |
| | Hai Friends, iam using udp connection for my project in j2me, its working fine, but i doknow how to set timeout for the Datagram connection. because there no server means it doesnot give exception. my code is given below [code] [COLOR="Green"]public String UDP_Client(String str) { String UDP_RString=""; String UDP_Senddata = … |
| | Hello, I am getting the following errors: unexpected type line 433 operator + cannot be applied to <any>,double line 433 operator + cannot be applied to <nulltype>,double line 433 incompatible types line 433 unexpected type line 441 In the below file. I know its probably something simple, but could use … |
| | Hey guys, got another question for you. I have a program that displays a new bean on my jPanel for each piece of data that it picks up from a file. I was wondering if there is an easy way to always have it display my bean to the northwest … |
| | Hey guys I'm using JLayeredPane because i want three distinct layers in my program. terrain, buildings and then characters. I thought that JLayeredPane was easily the best choice for this context. The problem is, I have only seen people *adding* components to their layers. I need to do my own … |
| | I have been testing a application I made, which is a simple swing interface with a checkbox. I am using custom icons for my checkbox, for checked, checked and mouse-over, unchecked, and unchecked mouse-over. I am using the eclipse IDE. Eclipse creates your application in the workspace file, so the … |
| | Hi every one. suppose i have Car class: [CODE=java]public class Car{ int id; int speed; public void move(){ ... } ..... }[/CODE] that have to run in Race class: [CODE=java]public class Race{ Car[] cars; .... public void runRace(){ .. for (int i=0; i<cars.length; i++) { cars[i].move(); //here is my problem … |
| | What Java object is used to read terminal input from the keyboard? |
| | So I've been "studying" java for two semesters, and my teacher is not what you would call the best. I was just wondering if any of you guys could help me out with some questions I have... What is a recursive termination condition and what happens if a recursive function … |
| | hi , frends i have a problem with displaying data on jsp page. While displaying data on web page(jsp page) i want to display some records , after a certain time that will be "automatically display" the next some more records on it, and continue this while the end of … |
 | Hello, I'm currently working on a project which requires me to provide an [B]upload and download file manager with pause and resuming[/B] functionality. Much like GetRight with its GUI but with upload and download function. This project is PHP based and I believe that PHP can't do what is required … |
| | hi every one suppose i have a Car class [CODE]public class Car{ [INDENT]int speed; int id; .. public void move(){ .... }[/INDENT]}[/CODE] and a Race class [CODE]public class Race{ [INDENT]int array[][];//contains car ids in race or 0 for none [/INDENT] [INDENT]Car cars[]; .... public void startRace(){ ... }[/INDENT] }[/CODE] if … |
 | I am making on-screen keyboard in java. All what i want to know is how to get focus into the notepad or any other typing point , I mean when i press a key it type it into the typing point like a keyboard do. If any one know any … |
| | I am trying to transmit an Image object through a Socket connection in Java. The only thing I may be missing is how to get an image size in bytes so I know how many bytes are being transferred over the Socket. I have the ServerSocket and Client working transferring … |
| | Hi, I'm fairly new to java and am trying to write a form of banking system for a college assignment. At the moment I am trying to access the account number of the object userCurrentAccount with it's method getAccountNumber from the account class. This is where the object is created … |
| | hi , i m new in java. i have 2 ques. 1. how to track Alt + s combination key in applet and 2.i need to send a image from applet to some url / servlet via http post. and display a progress bar showing the status of imge sending … |
| | I am new to Java, I am six weeks through a nine week class. I am having problems extending a class in my program. My assignment is as follows: Modify the Inventory Program by creating a subclass of the product class that uses one additional unique feature of the product … |
| | Hi, I dont sure that I am posting the thread to right place. I want to test user bandwith over an application that installed to user's computer. There are online test tools , but I must I need java source code for implementing to our application. Can anyone help about … |
| | i want to validate the String entered wether it is a valid standard equation of [COLOR="Green"]conics[/COLOR] the standard equation is: ax^2+by^2+2hxy+2gx+2fy+c=0 some variables can be missed in input string but it should be of "degree 2" equation  |
| | what im having trouble with is making an applet which has animates like the matrix code.. lines come down at random positions etc.. my lecturer said that it only takes 20 lines of code and is very simple. he gave us this info as a hint: [CODE]Use the random class! …  |
| | Hi everybody, i just have a task from my teacher..and the task is to make the chatting application with java (GUI = Swing) that implement the multithreading and multicast socket. can you give me the resource or tutorial??!! help me please.... :) |
| | sorry i can't found tread about voice recoder!! my question is how to recording voice with microphone and play recording with java swing/netbean and output from voice is save to hardisk!! thanks all  |
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| | I'm making a game server which involves three servers; a CommonServer, which connects the LoginServer and the Gameserver. Anyways, I've got another source that's similar that I'm looking at but I must have done something wrong. I've been looking at it over and over again and the other source works, … |
| | Good Day, I have an Abstract Class, Student, which has two child classes, FulltimeStudent and PartTimeStudent. I use the class, Test, to test how many credithours each student has and how much financial aid each student is getting. My output requests that firstly, i enter wheter a student is Full-time, … |
| | Hi, I'm kind of new to the world of streams in Java, and I was wondering - I have this Server/Client program, and I need to read Objects and Text streams. I tried making an ObjectInputStream, and a PrintWriter out of the Socket's InputStream, but when I tried to read … |
| | the exact diff between c++ and java technically........need to submit a assignment |
| | I am getting the error in the title of this post when I try to run my ColorFactory class. Can someone tell me where Im going wrong? Heres my code: [CODE] import javax.swing.*; import java.awt.*; import java.awt.event.*; public class ColorFactory extends JFrame { //Fields of the class private JLabel messageLabel; … |
| | Could any one you help me in resolving this issue. I want to write the content to a file line by line. I have done the following in my java class. I have to append the some content into an xml file. For this I am reading an xml file … |
| | im having problem setting values into a String array.. it must be with a setter method (yes this is homework). i have created a Person class which u can set name, age, gender and then i created a Teacher class which extends person and further allows you to set ( … |
 | Hi all, I'm doing the project, in which i'll get a string as response from the server. That string contains the xml content. I need to parse it and extract the required value of the xml tags... i have no idea about this, Kindly any one has a code to … |
| | hello again everyone to pick up where i left off, i took the advice of a member and split my poker game up into different classes which i will post below 1)i need help with two errors in the poker class which i have commented out as compiler error messages … |
| | hii.. I want to use a scriplet variable in javascript. i used <%! int i;> <% i=0; %> <input type="text" id="itemValue" onchange=changeValue('<%i%>')> it works fine if i give alert(i) in changeValue function. Otherwise it gives error i is undefined. Plz help me. I don't want to bother user by increasing … |
| | Hi I am using jmf to build some music player and im want to add some equalizer that will "jump" up and down according to the music, how can I do it? |
| | hello friends , i am searching job and put 5 projects and i am finding difficulty in explaning the current project so please can anybody tells me how to explain the project ,i mean how to start explaining and what should i explain .please its really urgent i am finding … |
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