35,618 Topics
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| | I have completed a program and it compiles fine. When I run it, it seems to run fine. The only thing is that I am missing element data for two of the objects I am printing out in the text area of this JFrame. I an array called printerProduct[5], that … |
| | Hello Im going to make a program that is much like a calender. I havent started coding anything yet because I would like some advice on how to make the program "alive". - I wont it to be able to start up automatically when windows starts. - Run in the … |
| | I know how to write messages and save it as a .txt file (using Input/Output streams). What I want to do now is to be able to click a button and have notepad open the .txt file. How can I do this? |
| | I have written some code that compares two "BufferedImage" rectangles by doing a pixel by pixel comparison. These BufferedImages are of "playing cards" with rounded corners so I would like to exclude those corner areas during the image comparison process since the varied background could cause the comparison to be … |
| | I am writing a Java application that "passively" interacts with a Windows Desktop Application. What I mean when I say that it interacts "passively" is that I perform screen captures to determine the location of "buttons" displayed by this Desktop Application and I use "absolute" x and y coordinates to … |
| | hi every1 i m able to print the first record of the database on the page. but i m not able to go to next record which i want to show on click of a button. i dont want to use while(rs.next) as i dont want to show all the … |
| | I am given dates in string format- Eg. 11/09/2010. (11-09-2010 not allowed) How can I convert it into integer dates? I am given two such dates in string format only and I want to find the no of days between them. |
| | class Stars { public static void main(String args[]) { int c=1; for(int i=1;i<=10;i++) { for(int k=1;k<=c;k++) { if(k%2==0) System.out.print("*"); // else // System.out.print("*"); } System.out.println(); c+=2; } output: * ** *** **** ***** ****** ******* ******** ********* i cannot understand that what the function of variable "c" and how it … |
| | Hi all, I saved my connector/j jar file into this location C:\ ... \Java\jre6\lib\ext as well as in $CATALINA_HOME/common/lib and i am using this code in the JSP : Class.forName("com.mysql.jdbc.Driver").newInstance(); I am getting below driver error message. Somebody please help me out. javax.servlet.ServletException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver My jar file name is …  |
| | HI ,how can i get the size of a JBUtton JLabel . I always get 0 when i use the getHeight or getWidth method .  |
| | public class DebugFour3 // This class uses a FixDebugBox class to instantiate two Box objects { public static void main(String[] args) { int width = 12; int length = 10; int height = 8; FixDebugBox box1 = new FixDebugBox FixDebugBox box2 = new FixDebugBox(width, length, height); System.out.println("The dimensions of the … |
| | Okay, so i need help getting a value from a variable in one class's method. I want to use that data in another Class's method. Heres what i mean... [code=java] public class RoomType{ public String N(String[] args){ Scanner scan = new Scanner(System.in); String opt = ""; int x=1; do{ opt … |
| | Hello. Anyone familiar with the Halstead product metrics? we are going to implement it. and again i need some help. here is our algorithm: 1. The user runs the program. 2. The program will ask the user to browse the file he/she wants to be evaluated using the programer's own … |
| | so, lets say I have a thread that looks like this: [CODE=java] public run() { boolean active = true; while (active) { //do some action that takes a really long time } } [/CODE] Is there any way I can directly stop and destroy this thread in the middle of …  |
| | The question is: Write a code that will take and inches input and convert it to mm. Then display the same result using m, cm, and mm. Example would be: Input: 53 inches Output: 1346 mm OR 1 m 34 cm and 6 mm Something is happening with the remainder … |
| | I found some code that does something that interests me, but I don't fully understand the implementation. The part I am struggling with is where the author "overrides" an "actionPerformed" method. I have a vague idea of why someone would want to override a method that is inherited from the … |
| | Just because security holes and vulnerabilities get reported to software vendors doesn't mean they are actually patched. A new report from IBM's X-Force security team found that of all the software holes reported in the first half of this year, more than half are still unpatched. IBM's X-Force report is … |
| | Goodeve guys... please help me on how to start a java game.. we have a proposed game and mine is a song lyrics game.. this is our project for the finals and honestly, i'm not that good in java.. :C what should be the first step? what is the best … |
| | Hi all, I saved my connector/j rar file into this location C:\ ... \Java\jre6\lib\ext and i am using this code in the JSP : Class.forName("com.mysql.jdbc.Driver").newInstance(); I am getting below driver error message. Somebody please help me out. javax.servlet.ServletException: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver |
| | I tried a lot to open a JAR file but it is not opening.I typed in command prompt javaw -jar MyJar.jar but it is not open. It makes some error sound bt not open. Please help me regard this  |
| | this error was displayed after i package and deployed my jsp file. i dont know any help? [CODE] HTTP Status 500 - -------------------------------------------------------------------------------- type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Unable to compile class for JSP … |
| | Hey guys, I'm a newbie programmer and I'm trying to create a program which calculates BMI. Weight is in lbs and height is in inches. I've compiled this and its got quite a bit of errors, so I could really use some help. The final result that I'm trying to … |
| | the class is the same. but there are two methods: first method: if simply returns a string. [CODE]public String FindPiece(String chessPiece) { return name; } [/CODE] name. is a constructor variable. it is a name of the chess piece [CODE]public Pawn(String name){ this.name=name; }[/CODE] second method public boolean isMoveValid(ChessPiece[][] pieces, … |
| | Hello All, I am student just starting Java. I do need help with swing - GUI. I am creating 4 textfield that accepts input from 3 user and will display as a 2D Array in the text area. As well as calculate the average of one column from the input. … |
| | im tyinh to writ a program to calculate nd display the volum ,area as well as the area of 6 sides of the rectangular prism but im stuck lol im a beginners import java.util.Scanner; public class RectangularPrism { public static void main(String[] args) { int length; int width; int height; … |
| | OK, so I want to thank all of you that helped me with my little problems within the past few days,I have almost come to the end of this project thanks to your suggestions. Now the thing is, I used ObjectInputStream & ObjectOutputStream to write down whole objects to a … |
 | private static void randomNumber() { int rand; int min = -10; int max = 10; System.out.println(" "); for (int i = 0; i < 10; i++) { rand = (int) (Math.random() * (max - min + 1) ) + min; System.out.print(" " + rand); } System.out.println("\n"); } can anyone explain … |
| | Hi guys, I have this assignment to do: Synchronize access to the instance variable, accBalance. Because accBalance is a double and not an object, it cannot be used as the monitor. Use synchronized methods or synchronized blocks of code, as appropriate. Simultaniously test two threads. Because the threads can complete … |
| | I have a problem outputting the contents of a text file. Whenever I try to display the contents of a file a "null" word is printed at the end of the output. Any help would be deeply appreciated. [code] import java.io.*; import java.lang.*; public class prog1 { public static void …  |
| | Here is what i currently have; the instructions are a bit vague so i am confused on what to do beyond this...any help will be tremendous! This is my 2nd week in java so please understand i am not an expert [CODE]public abstract class TestQuestion { protected String question; protected … |
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