35,618 Topics
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| | To accept 3 number and find max among three number(using && for checking multiple experssion) [COLOR="Red"]Please help me, I am a beginner in this discipline, and I hope I explain the problem[/COLOR]  |
| | Hi, im trying to use an actionlistener attached to a button to add a component to a frame I have created. The actual button should add to the frame a circle with some text placed in it which I have already created, it works fine so there's no problems there. … |
| | So i ve managed to create different shapes in my GUI window. But how would i go about deleting a certain shape or line from the window when I press delete on my GUI screen? |
| | I need to design a class to represent an oven control unit containing: - Three constants (COOK, BOIL, SELF_CLEANING) with values of 1, 2, & 3. - Boolean value 'on' to represent oven is on or off - Int value for cooking temp, actual temp, and cook time (in min) … |
| | Hi, I am getting an [COLOR="Red"]Exception in thread "main" java.lang.RuntimeException: Uncompilable source code - cannot find symbol[/COLOR] error message when I try to run this merge/sort program. I can't figure out how to fix the program to get rid of the error. Please help. [CODE] import java.util.Random; public class ArrayUtil … |
| | So doing my first year of software engineering at Uni and am having a little trouble with the old Java, Basically I need to use the Calendar class to call todays date, and then store it in a variable, Iv stumbled upon this bit of code but don’t really understand …  |
| | [CODE]public class Testing { static void calculate(Integer... i) {} public static void main(String[] args) { calculate(12); } }[/CODE] What does the ... in the calculate method argument indicates? |
| | Hello everyone. I want any text string to be rendered as an image using java coding and saving that image as an image file. Plz help me if anyone have any idea. Thanks in Advance !!  |
 | hi i wanted to inquire about two things. First, is it possible to connect two phones that both possess wireless cards to each other without there necessarily an access point, if so how could i, in theory, use it to design a messaging application in J2ME. thanks |
| | As above, can JSP do "live feed", as in if the DB has newly added items, a display page will auto add this item without polling the DB. Or this has to be done other language? Thanks in advance. |
| | My code is giving me problems can't add items to may stack Array Here is the code i have written public class MyStringArrayStack implements InterfaceStringCollection { public String[] stackArray = new String[0]; public int top; public int newSize; public boolean setMaxSize(int newSize) { if(newSize <= 0){ return false;} else{ top … |
| | Hello, I'm trying to write a method that resets a string to a default value (previously defined in a class) if the value inputted is not a valid. Because I know the format or structure of a valid input, I should easily be able to do this. The string is …  |
| | The code below is the file for the constructor method and the get methods [code] //Date: 3/18/2010 public class Taxpayer { private int socSec; private double yearlyGross; public Taxpayer(int taxPayer, double income) { socSec = taxPayer; yearlyGross = income; } public int getSocSec() { return socSec; } public double getYearlyGross() … |
| | Hi all. I am up to the final stage of my system, and it requires use of the observer/observable pattern, something I haven't a clue about! Basically, I now have a functioning "WatchList" system with which to store specific objects (Locations). Now, these objects have a number of fields relating …  |
| | pls help me with this problem......its for my exam for finals...pls help me.... here are the instructions: Create a Class of the ff: (focus on payroll) 1. EmployeePay (parent) define: attribute: salary(net), gross, rate, no of hours worked, tax=20% constructor: (2) method: setters/getters, reset()-set number of hours work to 0 … |
| | hi all frnds m not able to use javac command in my command prompt the command prompt is saying that javac is not recognised as valid but i have installed java plz help how to solve the problem  |
| | Hi, I am trying to write to a .txt file an integer but the characters I see when I open the file are strange. Could you tell me what happens ?? [CODE] import java.io.*; public class A { public static int readInt() { byte b[] = new byte[16]; String str; … |
| | Please help me add actionlistener ect. to my puzzle program so that i can move the tiles into ascending order..Here is my code.. [code]import javax.swing.*; import java.awt.*; import java.util.Random; public class Rand { private JButton btn[]=new JButton[16]; public static void main(String args[]) { Rand app=new Rand(); } public Rand(){ JFrame … |
| | Okay I am working on a quick Shortest Job first algorithm and ran into a problem. I can't figure a way to implement, each way I try I get the wrong next process. [CODE]private static int lowTIme(ArrayList<Process> testProcesss, int currTime) { int i; int temp = testProcesss.get(0).getcpuTime(); for(i = 1; … |
| | Im having trouble coming up with the java code for this. Can someone help me? First 3 month month-by-month account balance in your bank savings account. You need to make one, only one transaction-a deposit or a withdrawal-each month. Interest is added to the account at the beginning of each … |
| | I have a number of images where there is a small rectangle on a large white background; is there a way to automatically find the non-white content and crop that out to a new image? java or other language code, commercial software, or free software would be great. If I … |
| | I have some data like this: [CODE] 6 9 5 2 3 6 1 5 1 0 3 4 5 3 9 1 9 4 3 8 6 8 5 1 5 4 9 8 1 4 4 5 1 5 8 6 7 2 5 5 6 1 8 … |
| | Hello. I would like to know if anyone can help me with making a simple splash screen. Just a basic text splash, no images or popup. Just need it to where you add your name, date, etc. And it displays that, but must be outside the main(). The ones I … |
| | I am trying to make a log reader , which will read the log ..and the user will input a search string .. i want to get the output in a excel file containing the whole line in which this string is found [CODE]try { FileReader fis = null; FileWriter … |
| | Hi , I am developing web application using JSF2.0 richfaces. In this application, i am using <rich:extendedDataTable/> table for loading the data from mysql. My problem is how to select the perticular row value from this table. My sample code here. but it is not working... [code]<rich:extendedDataTable height="220px" width="300px" value="#{AddDocumentBean.perBatchAll}" … |
| | How do you select a string in a list using its index count?? |
| | I have a java project that I need help on. The program is for word occurrences and I have a basic add() and frequency() methods I need help creating, not sure how to begin. here is the skeleton I am working with: [CODE]@Override public void add(final String word, final int … |
| | I am not getting the correct output for this method. I have looked at the BigInteger class, and even tried to implement, after rewriting for my instance variable, but it did not carry the numbers over to the next digit, or bring down the remainders. Thanks in advance. [CODE] public … |
| | HI could any one help me to know the main idea to type program which converted from seconds to hours, minutes and seconds. thnks،، |
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