32,199 Topics
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| | I have the following problem and I dont undesratnd how to use arralists to implement. I have a customer class which I want to hold some primitive data types as name , id , address etc. To implement this using arraylists I must declare it as below? [CODE]Arraylist Customer =new … |
| | Hi guys, I've been looking into reflection and was wondering if anyone had any good tutorials or a good use for it. I understand how it works but can't think of an example of when it would actually be used. A website with a task that needs reflection to solve … |
| | I am new to JSON... I have been told to use it with XStream in my project.. I searched on net... But, I did not get any satisfactory information.... So, can anyone please tell in simple language what is JSON n basically why is it used? |
 | I have a problem with this code and I do not know what is causing it. [CODE]// The "ArrowKeys" class. import java.applet.*; import java.awt.*; import java.awt.event.*; public class ArrowKeys2 extends Applet implements KeyListener, Runnable { int x = 50, dx, y = 50, dy, a = 0, score, total, locx, … |
| | Hello I want to develop a program in which I query a string to any search websites like Yahoo,Bing etc.. and get search results(only the websites) to display in a list box.So is there any way to get the search results ? Thanks From Satish |
| | Hello All, I have confusion in command Class. Its constructor has 3 parameters. First 2 parameters I can understand. but [CODE]Command.Screen[/CODE] and priority parameter I could not understand. I tried to Google also, and refer different kind of ebooks, but still i cant understand. So please help me. |
| | I have a label,4 radio button.I have retrieved data from sql.I need to display the retrieved question in label and its 4 option in each of radio button.I got it working to display one question.my trouble is in button click.when next button is clicked question should change...any more ideas is … |
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| | Dear All First of all I wish you a very happy new year. I have been trying to understand the depreciation matters. As you can see in the codes below, There are 3 handleEvent methods used as pressbutton action , radio button selection action and dropdown list selection action. Now … |
| | I am working for online examination project. my work is to generate random number without repetition. i tried and i am getting numbers to be repeated sometime.... I need to know how to check the repetition in the generated number. random r=new random(); for(i=0;i<10;i++) { int j=r.nextint(10); System.out.println(j); } |
| | HI, I have now for more than 24 hours tried to figure out how I return the index number of the second smallest integer in an unsorted array. Some how, I do not get the index number returned, can any one see what I´m missing? As the program runs now, … |
| | how do i go about making a java music player? i have very basic knowledge in java and i learn best when i jump into a project..which in this case is a music player i would like it to play mp3 files with a nice looking GUI unfortunately...i have no … |
 | ok i want to make a program to show a teacher at my school so i can get into computer Ap which teaches you java(but they say u have to know stuff to get in it makes no sense i am in highschool). here is some seudocode and the code … |
| | Dear All, I'm taking a course online for school on how to code with Java. My current assignment is to have the computer read in a text file and make it split it into 5 different arrays. I am really bad with Psuedocode so if you answer like that it …  |
| | Hi, I need help with an assignment for a class I'm taking. The assignment requirements are as follows: 1.Carefully study the class structure in Products.java. Here is Products.java: [CODE]abstract class Product { protected float price; // return the price of a particular product abstract float price(); } class ComputerPart extends … |
| | Pleaseee help me guys. I can't figure out why the elements in my array are null. I'm reading in from a file and take each line and saving it as a variable in the object and then adding the object to the array. This is what I have so far...when … |
| | I'am beginner in Java, and I'am having a lot of problems while typing or making the sum of numbers. The fact is that I want to calculate the sum of pressed numbers until I press -9999, meanwhile when I press -9999, I want program me to show the sum of …  |
| | I am trying to refer to the class a nested class is 'in'... The 'this' keyword refers to the nested class, so I need something like super.this (except not at all like that) :/ I think the code below describes what I am trying to do: [CODE]public class Nest { … |
| | Hi, This is my first forum post and I'm very new to both the daniweb and programming community. I've been working on a project for a month or so and it involves clicking JButton to change the values of the text associated with the JButton clicked. Everything runs fine except … |
| | Hi I am new to Java. I am trying to develop a tool in which I am trying to download a file from a link. When I go to that link using my java program, IE is opened and its default File Download window is showing. But I need to … |
| | How can we set a default path in our system to save a downloaded file in the "File Download" dialog box of Internet Explorer using a java program? |
| | Hi guys. I have previously been developing a Java application using 2 Windows Vista PCs that both have MySQL as the database. I have always created a user for each PC (specifying their IPs as allowed hosts to connect) on the other and then in the application the code for … |
| | Hello to all. I have build a Java GUI application and now i want to convert and transfer it to an applet. I assume that whatever i have in [CODE]public void main[/CODE] will now go to the init() method of the JApplet. Now the problem is to embed it to … |
| | Can any one help me how to make a Java Application GUI independent of screen resolution.. Now my application uses jFrame and it gets problems when resolution of screen changes.. plz help... |
 | [code] //Address Book Part 1 //IT 215 //George Williams import java.util.Scanner; class menuOperations { //Initilize Arrays to store information String[] fNames = new String[5]; String[] lNames = new String[5]; String[] dAddress = new String[5]; String[] dCity = new String[5]; String[] dState = new String[5]; int[] dZip = new int[5]; int[] … |
| | Hey, I am making a card game of Higher or Lower. Currently an image of one card pops up and you have to guess if the next card is a higher or lower value than the one you can see. My question is, using BlueJ, how do I display two … |
| | hi,all in this basic java prog.I want to input all the elements of matrix one and two with commandline argument.please help. Thanks for read this... |
| | What is the difference between makin an ArrayList these two difference ways? i know the method will be the same and both will essentially do the same thing. but why two ways to initializing arraylist? [CODE] ArrayList<String> list = new ArrayList<String>(); List<String> myList = new ArrayList<String>(); [/CODE] |
| | Hello - quick question, I have created a method which prints a chosen symbol multiple times: - User enters 5 - Print this: ***** **** *** ** * I'm aware of recursion and know how to use it, my method uses it to do the above but I also use … |
| | Here is my code at the moment: [code] import java.util.Scanner; class menuOperations { String[] fNames = new String[50]; String[] lNames = new String[50]; String fName = " "; String lName = " "; String sFName = " "; String sLName = " "; int dAmount,dTimes,i; Scanner in = new Scanner(System.in); … |
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