36,051 Topics
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| | I have been working on this code for some time now. It is a basic graphics package. When the user clicks the draw button I need to create a chape based upon the user's input and put the shape into an array of shape references (up to 10). I attempted …  |
| | Hello guys, I am new to this website. It's nice to see these friendly people, anyways.... I have been trying to learn Java for a little bit now, I know the basics and some of the advanced things. But I came across a problem that is intriguing me so much. … |
| | HI , Is it possible to get the window size in Java ,if so cld any 1 guide me....and also i need to fix the windows in a particular position ..how cld i do ds in Java. |
| | Hi, i am having trouble with an assignment. i need to create an array, store numbers in the array... sqaure, cube and square root those numbers individually using different methods. display the resuts with a dialog box. after that i need to find the sum of the numbers in the … |
| | Thank you for your help earlier, I am just about there. I got the below code to work as I wanted below. Basically it imports the int's from a file (earlier help thank you) , then I find the min, then I sort by polar angle (all counter clock wise … |
| | Hi, I have written a program that outputs numerical results to the console in java(using eclipse). The problem that i have is that i want to copy or save the entire console content to a .txt file. How could i do this please? Thank you for your help  |
| | i have two radio boxes in a jsp using html and i want to make one checked based on a condition. I can do that in php but i don't know how to do that using jsp. Can anyone help me. [code]out.println("<tr><td>Billing Model"); out.print("<tr><td><input type='radio' name='appStatusDescription'value='0' >Prepaid<br>"); out.print("' </td>"); out.print("<td><input …  |
| | Hello Java Experts, Suppose I visit 10 web sites , some of them open pop up window even when I have blocked them in IE , then I get say 5 additional pop up window , is there an easy way to write java program to close all such pop … |
| | HI This is the simple code you seethere'a an for loop, so there are many submit buttons ! when i click a submit button on page how should i know which button it was Thanks [code] <table> <jsp:useBean id="o" class="shopping.shop"/> <jsp:setProperty name="o" property="id" value="${userid}"/> <% String f[]=o.listshop(); for(int i=0;i<f.length && … |
| | I am trying to use an action listener to fill an array, however I want to fill ONE array from two different sources: ComboBox Selection & JList selection. so I am trying to create an Array that will look similar to this format(each line is representing a different subscript) ComboBoxData … |
| | i want to add the value in map to a float value what should i do?s |
| | Hello, I am having a hard time with understanding arrays and most importantly implementing them in methods and etc. Does anyone know a good source to learn about arrays from a to z? I really need to nail down these guys. Any help will be appreciated Thank you |
 | Guten Tag, What we need to do is to call a variable (numbersToEnterInteger) from the main method to the total_average method. Also how do we pass the entire array to this method, rather than a single array element. Thanks in advance. Oh and also heres the code. [code] /** * … |
| | Hello, I am having a hard time with understanding arrays and most importantly implementing them in methods and etc. Does anyone know a good source to learn about arrays from a to z? I m looking for things like book, website or some other media. I do know about Sun … |
| | [code] import java.util.Scanner; public class encryption { public static void main (string[] args) { int temp, first,second, third, fourth,encryped; int a = first,b = second,c = third, d = fourth; int a = c,c = a; int b = d,d = b; System.out.println("After swapping a = " + a + … |
| | i want to add the value in map to a float value what should i do? |
| | I am new to java and many of the nuances to this language. For my class assignment we need to finish our methods which I have already done and do not want any help with. What I need help with is reading the data from the file with in "main". … |
| | Hi, I am trying to make a gui in which I import and combine 4 seperate classes JPanel classes that I made into one interface. But I am running into an obstacle that I am uncertain about. Here is the situation: 1. I have container using a BoxLayout that has … |
| | Hi all, I am trying to write a simple program but I am having an error message that I am working on it for three days. The aim of program is to convert entered value depending on the clicked radio buttons. Please can someone help me about it ? Thanks, … |
| | Please give me the code of a swing program which displays a button with an image on it.The image on the button should change when it's clicked. |
| | I have many projects in a software. Although some files and classes are shared within these projects, there are classes used by most of these projects. How do i creat classes that can be shaed among different projects . Is there anything in java that can function the same as …  |
| | hi all, I am having 2 combo boxes in my jsp page. one is of country and the other one is state. when i select the country value all the states of that country need to come in statecombo from database. any ideas please share with me. |
| | hi please can some1 help me out with this project,this is the project write a program to process a set of student marks. Each line of the input file follows this format: a name (which may be considered as a unique key for the purpose of this assignment) followed by … |
| | Hi Everyone, Days that I'm on that problem. I have to calculate a substitution score. Below my code: [code] public void calcSubstitutionScore() { substitutionScore = (average + examMark) /2; } [/code] I previously created the method average, and I try to add to it examMark divide by two, which is … |
| | Hi, I am working on a Java assignment of developing a University diploma program as follows: uni-diploma (one-to-many) diploma-module(one-many) module-lectures(one-many) lecture-student(many-many) class [I]uni[/I] contains TreeSet diploma all set and get methods for adding each new diploma in the set and association to class diploma. class [I]diploma[/I] contains TreeMap module all … |
| | Hello,I have a user input and trying to write a precondition that will give an error if the user inputs number or some other odd character (except ' and .) I am thinking of writing and if statement that if my search method finds anything like that it will prompt … |
| | I'm learning GUI, can anyone show me how to display an image on a panel. So far I have this: [code=java] import java.awt.*; import java.awt.event.*; import java.awt.image.*; import java.io.*; import javax.imageio.*; import javax.swing.*; import java.applet.*; public class JlabelDemo { public static void main(String[] args) { // create an image icon, … |
| | Hi, The problem i'm having is that the data that i want to appear on the file doesnt apear fully. I want the full results of the program to be saved to a doc file but i only get the next number in the sequence. Here is my code # … |
 | Hello, BTW the program compiles. Im trying to change a quick sort program so that it picks a median of three for the pivot instead of the first low number. My code is not running right, can somebody help me out. thanks [code=java] public class QuickSort{ public static void main(String … |
| | Hi, I have an entity class which I would like to write from one machine to another using sockets. As each machine has a separate copy of the entity class (identical except for package declaration) a ClassCastException will be throw; it seems the only way I could do this is … |
| | Dear all, I'd like to write a Java program that could use functions in an existing VB.Net dll or exe. Is it possible to do that? I had actually searched for methods online, and it seems like there's JNI which could do that, but after reading the implementation I got … |
| | Hello, I am creating a little webpage that allows a person to chose between 3 different ways in which they can query for results (either id, date, or symbol). Everything works fine if choosing id and entering a value to search for, but if date or symbol is chosen then … |
| | Hello, I am a noob in Java, and I am stumped with these 2 exercises. These are probably extremely simple for you all, so any kind of help with writing the program would be well-appreciated. 1. Write a program which simulates inflation of a balloon (2-dimensional circular shape starting from …  |
| | hi, i have created 3 reports in myeclipse blue 7.1 as customer_sale cutomer_region & customer_year. i want to create a jsp page in myeclipse blue 7.1. In that jsp page i have a drop down menu. now i want to include the names of all these reports mentioned above in … |
| | Hi, I created a sample frame in Java and connected with the database and when i converted to exe file the database is not accessible ..can any1 suggest me is it possible to access database in exe else wat method do i need to implement in order to acheive this. |
| | Hello, I am very new to JSP but I am familiar with Java. I am having an issue with some error messages I don't understand. when I use this syntax: [code=jsp] <jsp:useBean id="search" class="search.SecSearchParams" scope="request"> <jsp:setProperty name="search" property="*"/> </jsp:useBean> [/code] I get this error: The value for the useBean class … |
| | Hi everybody, So i am totally new to the programming world but I have manage so far to learn how to connect to mysql database to Java and execute a simple query. However, I would like to know if there's a way I could make this query to look like … |
| | i have problem that in showpane Modify and Delete pane3 eventhough clicked delete button for the action but the combobox "Select Book" doesnt update in the list that the deleted book still exist. What happen ? any guide ? thx in advance . [CODE]import java.awt.*; import java.awt.event.*; import javax.swing.*; import … |
| | Hi. I am developing an e-mail application for lab works. I am using servlets mainly along with JSP and using HTML with CSS. I have two questions.Please tell me the solutions. Its important and its urgent. 1. As usual I give the provision for attachments.I wrote code for uploading files … |
| | hello . I am trying to simulate the MD5 hashing algo. My code: [CODE] private void jButton1MouseClicked(java.awt.event.MouseEvent evt) { try { MessageDigest object = MessageDigest.getInstance("MD5"); String str = jTextField1.getText(); byte arr [] = str.getBytes(); object.update(arr);//update the md5 object with the message arr = object.digest();//calculate the digest str = IntegerToHex(arr);//convert to … |
| | Hello guys, I am converting my servlet page into mvc form and struck at perticular point. I am using DAO class and VO class for database related tasks.Here I am sending u a little bit of my code segments so taht u can understand my problem. In DAO class:- //I … |
| | hi, everyone i'm new in java programming i need help in my simple project i have list contain names of persons from db .. i finished it using access ... the problem that i wanna to 'when i select any name of this two window open and chat between each … |
| | I getting an error from a code that I have been working on. The error is Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Unknown Source) at java.util.Scanner.next(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at sample2.AdditionalMethods.main(AdditionalMethods.java:57) My code for the information is package sample2; public class shape { private String Name; … |
| | Hi i'm just start to learn jsp. now i got 1 task to complete. I want to create navigation in jsp by recursively. my case is retrieve from database and list in jsp. display all organization name in jsp from mysql. Organization ABC CDE EFG once they click any of … |
| | Hi, I am trying to create a mortgage calculator per an assignment and have it working ALMOST perfectly. I just need to add a loop to make it pause when the screen is filled and wait for an ENTER until the loan balance is 0. Can someone help me? Here … |
| | I am having trouble printing onto a JPanel. I am able to print any string that i want to. here my code: [CODE]import javax.swing.JFrame; import java.awt.BorderLayout; import javax.swing.JLabel; public class TestDraw { public static void main(String[] args) { final int WINDOW_WIDTH = 300, WINDOW_HEIGHT = 300; DrawPanel panel = new …  |
| | Hi guys, I just can't figure out how to traverse trough this heap. It's a 4-heap and I'm trying to implement a toString method for it. It should return a string and must be recursive. Like pre-order traversal. I'm lost with it. [CODE=java]public String toString(int index,String out) { int child … |
| | I'm trying to install java on my home laptop and it isn't working, i followed all the steps outlined by my lecturer but the javac filename isn't executing properly. Is it setup right by me?? In environmental variables PATH = C:\jre1.6.0_07\bin;C:\Program Files\PC Connectivity Solution\;C:\watcom-1.3\binnt;C:\watcom-1.3\binw;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\Metrowerks\CodeWarrior\Bin;C:\Program Files\Metrowerks\CodeWarrior\Other Metrowerks Tools\Command Line Tools;C:\Program … |
| | Hi, I am writing a jsp app. Thing is I cannot get the "hhello0" String in the destroy method to echo after the thread is stopped, fourth line from the bottom. Thanx already :S [code=java] package Transaction; import bean.*; import dealer.DealerDetails; import java.io.*; import java.sql.SQLException; import java.util.*; import java.util.logging.Level; import …  |
 | Hello friends. I'm working on a program to sort a list object using toArray, Arrays.sort, and Arrays.asList. The problem asks that I then apply Collections.binarySearch directly to the list object. I know what the problem is (which I have stated through comments in my code) but I don't know how … |
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