32,204 Topics
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| | Hi is java suitable language for robot programming ( like line follower robots) ??? thanks |
| | Hi All, I have created a CON, PRN folder([url]http://www.hoax-slayer.com/con-folder-name.shtml[/url]) using "md\\.\\c:\con " through DOS prompt, i was trying to create same CON and PRN folder through Java code using "Runtime.getRuntime().exec("md\\\\.\\d:\\con");" But it is giving following Exception : Cannot run program "md\\.\d:\con": CreateProcess error=2, The system cannot find the file specified … |
| | Hello, My ouput is showing as... "1 2 3 (10)(23)(29)" when it should be... "1(10) 2(23) 3(29)" I don't think I am too far off. Here's the code and thanks in advance. // int[] Groups = {10, 23, 29}; in the constructor public String toString() { String tempStringB = ""; … |
| | Hi, I am getting this exception: [CODE] javax.naming.directory.InvalidAttributeValueException: [LDAP: error code 21 - ob jectClass: value #0 invalid per syntax]; remaining name 'dc=jndiTest' at com.sun.jndi.ldap.LdapCtx.mapErrorCode(Unknown Source) at com.sun.jndi.ldap.LdapCtx.processReturnCode(Unknown Source) at com.sun.jndi.ldap.LdapCtx.processReturnCode(Unknown Source) at com.sun.jndi.ldap.LdapCtx.c_createSubcontext(Unknown Source) at com.sun.jndi.ldap.LdapCtx.c_createSubcontext(Unknown Source) at com.sun.jndi.toolkit.ctx.ComponentContext.p_createSubcontext(Unknown Source) at com.sun.jndi.toolkit.ctx.PartialCompositeContext.createSubcontext(Unk nown Source) at com.sun.jndi.toolkit.ctx.PartialCompositeContext.createSubcontext(Unk nown Source) at … |
 | Is it possible to have a client/server service that doesn't use sockets? |
| | Hi i m new to java, i want to make a simple application with netbeans ,(To Learn) i want to learn how to get data from a data base(mysql database) and display to textBoxes, and also want to learn how insert delete update database, Are there any tutorials or ebooks.plz … |
| | HI All, I want to create one folder which should open only with my application. Is it possible through JAVA ?? Please Guide me and send the Java code if possible Thanks in Advance |
| | I have to write a program that creates a GUI and asks the user to select from a group of buttons which time of the day they made the call, and input in a text field how many minutes the call was. for the day time, it's supposed to be … |
 | Hey for some reason my rectangles are being drawn after the start variable has been incremented all the way through. This is causing them to go off the screen. What i wanted, is like in the code, i want it to draw, increment draw increment until the loop is finished.[CODE]import … |
 | I'm trying to make a html editor. I need to set different colors for different words... I managed to the change text's background color, but not it's foreground. Can some one help me? this is my code [code=java] public class HEditorView extends FrameView { public HEditorView(SingleFrameApplication app) { super(app); initComponents(); … |
| | There is an error , it is cannot find Symbol [CODE] import java.sql.*; public class Main { public static void main(String[] args) { try { Class.forName("com.mysql.jdbc.Driver"); String connectionUrl = "jdbc:mysql://localhost/mytestdb?" + "user=root&password=PHP"; Connection con = DriverManager.getConnection(connectionUrl); } catch (SQLException e) { System.out.println("SQL Exception: "+ e.toString()); } catch (ClassNotFoundException cE) { … |
| | Hello: Soon I will need to have my foriegn keys working. I have tried to set them up with no luck. Could someone show me how to set the payee_uid below? I am using an Apache Derby Embbeded Db 10.5.3. Thanks [code] <entry key="createStudentTable"> CREATE TABLE student ( stu_uid VARCHAR(11) … |
| | I had to write 10 objects of cars into an array and now my problem now is writing the array into a text file. I am able to get the correct output in the console, but when I open the text file I get part of the desired output, as …  |
| | Hello im having problems with my code. i wanted to make a program that would let me enter anything and then place each one of them inside the array. [CODE]import java.util.*; class charAt { public static void main(String[]args) { Scanner input=new Scanner(System.in); String[]sample=new String[52]; String enter; int x; System.out.println("Enter something"); … |
| | i am having problems in reading the contents of my .dat file. the contents of my .dat file are the following: 10.20 60.20 70.20 25.25 1.1 2.2 3.3 4.4 my expected output should look like this: --------- --------- --------- --------- 10.20 60.20 70.20 25.25 1.10 2.20 3.30 4.40 but when … |
| | java class files are not loaded into memory till the time they are referenced. If this is true, then the use of import statement is just to save a bit of typing. Is it the case ? |
| | I have a servlet written in Java and I am attempting to send data to the method using C and the WinSock2 API. When I attempt to just send the raw data I get an invalid stream header error. I am not sure how I should go about handling this … |
| | I'm trying to list a bunch of buttons vertically, but am having problems even getting that much done. I'm pretty sure I have the scroll pane working (it just isn't being used yet so I can't test it). This is part of an assignment so I'd prefer not to post … |
| | Please can one help me with a better way of Converting Date( in Hour and Minutes) in to Double or Integers. I want to use it for arithmetic purpose e.g, if the Date Input is 6 hrs:30min, then i want it converted in to 6.5, ....or 12 hrs: 15 min … |
 | I get this error when i write to my C drive using an ObjectOutputStream [CODE] List<String> strings = new ArrayList<String>(); strings.add("test1"); strings.add("test2"); strings.add("test3"); IO.IO.writeListToFile("C:\\Users\\coconnor\\Documents\\Java\\ToolKit\\", strings); [/CODE] [CODE] public static void writeListToFile(String location, List<?> list) { ObjectOutputStream p = null; File f = new File(location); try { p = new ObjectOutputStream(new … |
 | Hello, I am having trouble writing to a file from an applet (in a local directory) without totally demolishing the file and erasing it's contents (okay, maybe I am exaggerating on the [I]destroying[/I] part :P, but it does erase it!). Also, I just can't make the applet [I]write[/I] to the … |
| | Hi guys, I'm trying to read a file which contains text in arabic. The file text is aligned from right to left. But when I read it, the output is from left to right. Is there any way to align it from right to left? I'm trying to display the … |
| | hi! I add code example. when I run that, I get exceptions: [CODE] /******************************************************************************* * Copyright (c) 2000, 2005 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this … |
| | I can't seem to find the correct way to add an alias in a select statement. Is there a way to do this using an embedded Apache derby database? The usual way will not work. ex: [icode] SELECT uid AS User,fName AS First,lName AS Last FROM table[/icode] |
| | Hello: I have created a Desktop that interacts with a embedded db. I also have crated a flash program that opens and runs itself in any web browser. My inquiring is to find out if I can create a button to launch this flash program from my Java app? Also … |
| | My project is e learning project. I've a "choose the correct answer" module. When the click the "begin test" button it should fetch the questions and options from database and display it. Instead of that my page displays "java.lang.NullPointerException". I've assigned unique values for each error. So the exact error …  |
| | G'day, I was wondering if anyone here knew how i could convert java output to a formatted PDF file? If anyone knows of a reliable open-source project it would be much appreciated. Thx, TC |
| | I'm trying long distance learning & I'm having many issues. I was able to write a program that runs well using an IF loop. but now I am to use that same exact program with a WHILE loop & I just can't understand any explanation I receive from the instructor. …  |
| | This is code I've taken from another website, and adapted to work with the JFileChooser. I got it working so that someone could select a java file with the chooser, and I'd send a "java -jar FILENAME" to the console and the app would launch. However as soon as I …  |
| | can any one provide java code for bellman ford algorithm with java applet? here is the algorithm: BELLMAN-FORD (G, w, s) INITIALIZE-SINGLE-SOURCE (G, s) for each vertex i = 1 to V[G] - 1 do for each edge (u, v) in E[G] do RELAX (u, v, w) For each edge … |
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