36,051 Topics
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| | How to connect a MIDlet application installed on mobile to a server application on the desktop?  |
| | I'm trying to add an image to the top of my GUI as a logo. I tried to put it in a JPanel then add the JPanel at the top of the GUI, the only problem is that my image isnt going into my JPanel. Heres my code for it … |
| | Hi, I'm trying to write some code that will draw a filled in black circle at the coordinates where the mouse is clicked. Here is what I have written so far, I can currently get the coordinates of the mouse click point but nothing is displayed. I also get an … |
| | My source code runs fine in IBM RAD. When I tried to run it in JBuilder, I encountered an error "Incompatible object argument for function call" while running a JSP file. Any idea how to handle it? See details below: 012-06-16 10:20:48 - Ctx( ): Exception in: R( + /FileUploadAction.jsp … |
| | Hello, can you please help me to see what's wrong? INSERT INTO jobs (priority, date, deadline, material, status) VALUES (?, ?,?,?,? ) select customerID from Customer where CustomerID =?"  |
| | How would I go about searching a map that hasbeen written to a file? My GUI has a method caled processFind() which prints all keys in the map, I have this working but not if the map is saved to a file. private void processFind() { gui.results.setText(""); for (Object s … |
| | Can i create **GUI in round** shape wihtout title bar by extending **JFrame** class in java. I want circular shape instead of default rectangle. How can i do this? Plz give solution as soon as possible.  |
 | well i am tring to make compass with a needle which rotates with respect to the position but the problem is my new to j2me and i dont know how could i access my gps to to do so i want to know wat r the various api's i can … |
| | Hi every one, Can anyone give me some idea about this! I need to check a string is numeric or not. Example: if string is 1111111111 returns true if string is 11111111aa returns false if string is 11 1111111 returns false if string is 111~`11111 returns false Any idea will … |
 | Is there anyway, through java, to tell whether a tv connected to your computer is turned on or off? Or if its not build into java is there any way to even do this in windows? Because nothing change in windows or my raedeon driver when i turn my tv … |
| | System date & time is in SimpleDate format. How can i convert this into integer? **"sdf.format(new Date(System.currentTimeMillis()))"...**.......... I want to convert current time** into integer** data type. *Plz plz plz help me.* Any help for this is alwayz welcome. |
| | Hey, Im stuck trying to figure out how to insert one byte between two other bytes that have already been created in an output stream: OutputStream out = new FileOutputStream("MyFile"); try { out.write((byte) 70); /*Byte should be inserted between these elements*/ out.write((byte) 40); /* but must be performed at end … |
| | **Wow I'm an idiot, I just saw the problem, how did I not see that for so long. How do I delete threads?** Hello everyone! I have a problem that confuses the hell out of me, when I try to compile my class file I get the "illegal start of … |
| | Hi, i need help on updating data in mysql using JDBC since im using java.i want to send data from arraylist and it seems and error when i run it.below is my code for update. [CODE] private void update(ArrayList<String> list, int uid) { try { Connection con=null; Class.forName ("com.mysql.jdbc.Driver").newInstance (); … |
| | i need help creating enemy. i want enemy to move closer to player and enemy can only move left or right; here is my enemy class public class Enemy extends BasicGameState { Animation enemy; Animation e_movingRIGHT; Animation e_movingLEFT; int[] duration = {200, 200}; //how fast animation change double speed = … |
| | I have a TreeeMap that i need to wite to file. I tried this: try { File file = new File("reboot_customer_details"); FileOutputStream f = new FileOutputStream(file); ObjectOutputStream s = new ObjectOutputStream(f); s.writeObject(customerDetails);//customerDetails is the map i need to save s.close(); } catch(Exception ex) { gui.results.setText("Error: " + ex); } When … |
| | Hi, can anyone tell me how to make the text a user types into a JTextfield appear in uppercase regardless if caps is on or not? Thanks Glen.. |
| | HI Could yu please tell me how to get previous values from current iteration in the below example : public void parseDtoCollection(Collection dtos) contains list of dtos in private AssetClassVersion createNewAssetClassVersion(AssetDTO dto) method i am iterating but i want to get to get previous itearation values in current iteration if … |
 | Can some one provide me an example to call dll from java? I learning some thing about JNI , also linkage with c++ but doesnt found any cool stuff on c# and java... I want a free solution. Thanx in advance. |
| | Hello, I would like to retrieve the data from one of my database table. I have read many stuff about it and found out that I need to create a table model which is quite confusing to me. Basically my table consists of customer information. What is the best way … |
| | hello,i have a problem in my math project. my project is to write a program that read set of element and its relation. the input data will be from text file.(Set<space>Relation). {1,2,3} {(1,1),(2,2),(3,3),(1,2),(1,3),(2,3)} i have no problem reading text file into the program but im stuck when i want to … |
| | I am trying to learn JavaMail API.i am working on this.i have search much from google..i know for hosting mails, mail server is require and Apache james is a open source server.i have downloaded that.but i am not able to configure that.i dont understand how actualy javamail work with James.I …  |
| | I am hoping this is an easy question. I am not well versed in Java, I am a ITSM admin, but the ITSM product we use comes with Tomcat as it's web server. I am trying to find out if there is a simple way to set index file (welcome … |
| | Hey, Iv been working a lot with binary files recently and i am currently stuck trying to save a string to a file. The problem is i do not want the literal string value of "010100000000000100010011000000000001000100110" to be saved to the file I want the above binary string to be … |
| | Hello! I am starting a small text based game, I have created my set and get methods for my player class: import java.util.*; public class player extends main{ /* * Player attributes: * Name * Weight * Morale * Money */ //PLAYER ATTRIBUTES private String name; private int weight; private … |
 | I am making a game, and I am wondering how to make an image from a graphics object. I have tiles stored in an xml file. I then read from this file to make the level, however I would like to have a thumbnail for each level. This is why …  |
| | main() is a static method and is part of class. Then how is it that main can access instance members? |
| | i havae problem java connection with sql server 2005 in windows authentication mode my code is as follows Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); Connection connection = DriverManager .getConnection("jdbc:sqlserver://localhost:1433;database=dbName;integratedSecurity=true;"); |
| | HI All i am new to java jdk 1.4 and tomcat 4 my requirement is id desc name firstname lastname 1 hi ravi m last 1 hi ravi m middle 1 hi ravi m mapp 2 hi kiran ha hey 3 hi vinoth hello yes id is ----id desc name … |
| | During the process of creating my latest game, I've come across the problem of collisions. In the last few games I've made, I've used a system of collision detection that relyed on two rectangle's methods. This seems to work, but doesn't provide a method for dissallowing an entity entry into … |
| | Can someone explain the code below? Is .next an operator in java that pushes the pointer to the next node in the linked list? Node E < -- type node? public E dequeue ( ) throws EmptyQueueException { if (isEmpty ( )) { throw new EmptyQueueException (”Queue under flow”) ; … |
| | Hello everyone, I am building a tic-tac-toe game for my final and everything is going smoothly except for one problem. The names I ask the user to enter at the beginning of the game, a replaced with null when the messagebox that shows who won appears. Here is the code, … |
| | How can i add some space between these four components and the JFrame window?  |
| | I have a tab delimited text file with text like this: Wed Jun 13 01:00:19 2012 | error | client xx.xxx.xxx.x | rdy 784 bsy 16 The pipe | signifies that the tab delimiter. I need to convert this into a CSV file using Java. I also need to split …  |
| | package furniture; import java.io.*; import java.util.*; public class Program3 { public static void main(String[] args) { //array of 10 Furniture object references String[] furniture = new String[10]; String filename = "furnitureData.txt"; Scanner input = null; try{ input = new Scanner(new File(filename)); }//end try catch(FileNotFoundException e){ System.err.println(e); System.exit(1); }//end catch }//end …  |
| | I need to search a Maps keys based on user input. So in a text field the user may type "M",then hit a button marked "search" this will bring up all keys that begin with M. Mike Molly Michael Michelle Marvin If they type "Mi" it will bring up Michael … |
 | Can someone help me with a short program that calculates age, the user will input their birthday and the program displays the age..  |
| | Hi there, I am having trouble understand how they derive these running times for the code in the image below. [http://i.imgur.com/usK9U.jpg](null) I am having trouble especally with log n running times, how are they derived? especially the bottom left slide. If someone can shed some light on this, I would … |
| | I am retrieving a value from DB. Datatype in DB:---- number(6,2). So i retrieved as decimal from db as getdouble(attrubute) So if 10 is present in DB i am getting 10.0. Is there any way to get 10 and at the same time if 10.2 is there i require as … |
| | Hey all I need a bit of help if someone can! im writing(trying to!) a small application for a friend who owns a computer repair shop. Its a 'booking in' application. Someone brings a computer/device in and whover is on the front desk takes some details. Name, Street, Town, Postcode … |
| | Hi ! I am writing simple email client that uses TCP/IP sockets to interact with an SMTP server to send email messages. this is my code import java.io.*; import java.net.*; import java.util.*; import java.text.*; public class TestSendMail { public static void main(String args[]) throws IOException { Socket socket; DataInputStream dataInput; … |
| | meter billing for company and the application must hold information 5 customer . use array and repetition structure step is :- 1) prompt user to input type of customer (residential or industrial),past meter reading, & current meter reading. 2)seperate them as either r for residential or i for industrial use … |
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| | I have a task to create an app that scans a 2D code (DataMatrix) with a usb scanner (set to work as a serial port), then creat a zip file from the inputstream, unzip it and get an xml. i have managed to scan the code, get the inputstream but … |
| | Hello All, I am stumbled with one problem regarding HTML Tag Name which is a Varible and I am reassigned it value in runtime. Actually the Code is something like this. <% String var=null; for (int i=0;i<=5;i++) { var=(String)i; %> <div id=var> </div> <% } %> No if I want …  |
| | I want to verify users using **Active directory**. I have simple code to connect to **LDAP server** from LDAP client. But it is giving "**Naming Exception :- simple bind fail**" msg. Can anyone help with this?  |
| | I new with database and java.I want to show result of the table WHERE USER = USER LOGIN NAME private void query() { try { Class.forName("oracle.jdbc.driver.OracleDriver"); Connection con = DriverManager.getConnection("jdbc:oracle:thin:@andy-lcoyx7gfw:1521:orcl", "andy", "andy"); String sql = "select * from schedules where (userName = @User) "; //'{$_SESSION['username']}' Statement stmt = con.createStatement(); ResultSet … |
| | I have written many FORTRAN codes, but am new to Java, which I find much more powerful and more difficult. I have a program that was written several years ago in MS Access. The program consists of a main window with buttons that take you to other windows where you … |
| | Hey Guys, I'm playing with android webview.. and I would like to have it running background whenever I press home button... Please let me know if this is possible... Here are the codes, maybe I need to tweak anything .. package trektrak.GeoWebView; import android.app.Activity; import android.os.Bundle; import android.webkit.GeolocationPermissions; import android.webkit.WebChromeClient; … |
| | I intend to write a GUI java program which convert a decimal(base 10) to hexadecimal(base 16). Floating point decimals are also valid input. the code of my program private void myEnterButtonActionPerformed(java.awt.event.ActionEvent evt) { float mynum; mynum = Float.parseFloat(this.myNumberField.getText()); Float floatObject = Float.valueOf(mynum); myResultField.setText(Float.toHexString(mynum)); } but when I run the program, … |
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