35,618 Topics
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| | Hi i am new to tomcat can any one of you explain how to deploy application in tomcat using server.xml with description |
| | So i made a face using several ovals, a arc, and a polyline in the graphics class. I want to be able to change the size of the face based on the number input into the JTextField. Right now the value for the textfield is the variable "size" in the … |
| | //This program will prompt for user to enter in the Fahrenheit temperature and convert it to Celsius. import java.util.Scanner; public class Project4 { public static void main (String[]args) { double temperature; double celsius; Scanner scan = new Scanner (System.in); System.out.println("Enter the current temperature in Fahrenheit: "); temperature = scan.nextDouble(); celsius …  |
| | I have the following program written where Square extends Rectangle. I cannot figure out how to get the correct display for the x and y coordinates. It should display Expected: Square[x=5, y=5, width=30, height=30] but instead it displays Square[x=10,y=20,width=30,height=30]. [code] import java.awt.Rectangle; public class Square extends Rectangle { private int … |
| | public class SimplifiedMath { public double max (double first, double second) { if ( 58 > 100) { return first; } else { return second; } } public double min (double first, double second) { if (35 < 13) { return first; } else { return second; } } public … |
| | the program runs but fails to read the double word states (e.g New Jersey). am getting the error.java.lang.NumberFormatException: For input string: "Hampshire" [CODE] import java.text.DecimalFormat; import java.util.*; import java.io.*; import java.lang.reflect.Array; import java.nio.CharBuffer; import java.awt.*; //import java.awt.event.*; import javax.lang.model.type.ArrayType; import javax.swing.*; import javax.swing.event.*; public class PJ5 extends JFrame implements ListSelectionListener … |
| | Hello everyone, I think I need a second eye on the code. I'm not sure where I went wrong but it was working at some point. Everything should run without a problem any idea what is going on? A second opinion would be highly appreciated... [ICODE]import java.util.Calender; import java.util.GregorianCalendar; public … |
| | hey guys I need help to implement a array list I have the skeleton structure written out but some of the methods do not work and I have troubles with the remove method please help and how do you do isEmpy method [CODE]//tried my best dont get some stuff public … |
| | Help with java Button How about I'm making a music player but I like the look of the button you added the image as ImageIcon because for example the play button is round and I want to lose those edges rectangular button and wanted to find a way to insert … |
 | Hello, I would like to use a button as a link and pass the session variable in a jsp! The below code should work. Any help is appreciated. Thanks. I use encodeURL if the user has cookies off. This works with links but not when using an input button with … |
| | Hello. I want to ask you all how to remove an element from an arraylist? Let's say the arraylist is made of the Integer elements: 23, 43, 40, 10; I want to remove the number 43. How do I do that? And don't tell me arraylist.remove(1); because this removes the …  |
| | Hy , Is there any way to remove the windows borders (the upper with the name and (space) close , minimize , maximize ,the right one , left , down) from an java app? I develop the app in NetBeans , so here is my code for opening the "main" … |
| | hi i need the help that how to calculate the bytes of datatypes in java...? if it in c/c++ we will use sizeof.. but in java.. how could? |
 | This is not much of a question, but a discussion and searching for opinions. I have seen that many use the Scanner class for getting input from the keyboard. Some, like myself, use the BufferedReader. Why will someone use one over the other? Or they both do the same thing … |
| | Hello everyone, I've made a client web project, which is working using Tomcat server that, in turn, connects to a server that wait socket connections in a port. If I start eclipse and tomcat and run the server side, I can access the application using any browser by internet. I've …  |
| | I am trying to print my stack trace on a file. So far I am successful. But, when I try to create the log file name using current time and date, the main program throws exception in the Output(NetBeans) window instead allowing my code to handle it. I am using … |
| | Can anyone suggest a open source llibrary for plotting 3D graphs . More precisely dynamic graphs. I was using jfreechart but that is only for 2D plots. I need a library so that I can plot 3D graphs............. |
| | how to convert [B]\[/B] to [B]/[/B] in strings using java String path="C:\Documents and Settings\user\My Documents\Crypt.avi"; Eventhough [B]path.replaceAll("\","/");[/B] does'nt works!!!!! can anyone tell me how to do this? |
| | Is there any framework or sample java code to evaluate an arithmatic / logical / bitwise expression , which will provide the value for input parameters , to make the condition pass. For example , In the below sample arithmatic condition , if the values a=7 and b=6 are passed … |
 | can someone redirect me where I could learn serial port programming in java thanks. |
| | Hello. I am trying to get back into Java and wanted to start by trying to make a functioning GUI calculator. I have the basic framework for it, but I am having some trouble with the operator. I would like to take what is on the textfield and put that … |
| | Hi Guys, Firstly, i'd like to state that this is a homework question which means i'm not looking for a direct solution to my problem. Just subtle hints on how to improve etc. I'm posting this here as I want to try and get a better understanding of Java's wait() … |
| | I need some help with this. For my class I have to make a game called hexo, basically "Hexo is a game loosely based on the television game show Lingo. Rather than trying to guess 5 letter words (as in Lingo) the Hexo player will have sixteen tries to guess … |
| | Hi i am looking for following output.I am not getting these. System.out.println(total no of grades) Number of A's Number of B Numbers of C Number of D number of F [CODE]import java.util.Scanner; public class ExamScores { public static void main (String[]args) { String a; int count= 0; String word; int … |
| | Ok so i am writing a program to determine a users hat,jacket, and waist size. I have most of it done but i am still getting an error. Any help would be appreciated! [CODE]import java.util.*; public class Sizes1 { public static void main(String[] args) { int answer = 0; int … |
| | What is the best approach we can follow while trying to solve a cipher text without a key? I searched over web but was unable to find some good method.... Plz help guys... |
| | So I did the first part of my assisgnment like this * ** *** **** ***** ****** ******* ******** ********* using this code [CODE]public class starForTest { public static void main(String [] args) { for (int i=1; i<=9; i++) { System.out.println(); for (int j=9; j>=i; j--) { System.out.print(" "); } … |
| | [B]I have created a static Main class called ProductButtonTestDriver, that will run my class ProductButton.java- the prof wants a picture of each coffee shop item, with the name and price to appear in a button, then a check box if the customer selects that item- I am only on the … |
| | Can someone tell me how to fix this please? [CODE]public class NestedNumber { public static void main(String[] args) { for (int i=1; i<=5; i++) { System.out.println(); for (int j=1; j<=i; j++) { System.out.print(j); } } System.out.println(); } } [/CODE]  |
| | [code]//This is the coding that I have done in delete item private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here int selectedIndex = jList1.getSelectedIndex(); jList1.remove(selectedIndex); }[/code] its throwing following Exception [code=text]xception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 1 at java.awt.Container.remove(Container.java:1132) at musicplayer.jButton2ActionPerformed(musicplayer.java:144) at musicplayer.access$100(musicplayer.java:23) … |
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