36,051 Topics
 | |
| | Iam unable to run programs from command prompt, my environment variables are correct. When i type javac on command prompt ,it gives the correct data ie possible outputs. When i type java it again responds as it should. But if i run a program say: java practice then it gives …  |
| | can somebody prove me the coding to update the database (mysql) with JSP |
| | |
 | USING JAVA SWING I HAVE A JFRAME WITH TEXT FIELD WHICH I PASS THE USERNAME AS SOON AS I LOGIN. THE ISSUE I HAVE IS WHEN I NAVIGATE TO ANOTHER FRAME AND COME BACK AT A LATER TIME THE FIELD LOSES ITS VALUES I USED THE hide() and SETVISIBILE(TRUE) methods. …  |
 | Who here would prefer Java over PHP, or PHP over JAVA? If you prefer one over the other, for whatever reason or application, why? Specific code comparisons are appreciated |
| | I need to converted from seconds to hours, minutes and seconds. (without using if) and this is my code [CODE]import java.util.Scanner; public class SecondToHoursAndMin { public static void main (String[]ages) { Scanner in = new Scanner (System.in); int second; System.out.println("Enter the second: "); second = in.nextInt(); int hours,minutes,second1; hours=(second/3600); minutes=(second%60); … |
| | hi all i need a bubble sort algorithm in Java and make a class bubble_sort to sort any given array of any user defined type. can any of u give me a basic algoruthm i need to work with???? |
| | I am making a calendar planner applet. When the user clicks on a date it displays a menu of the different activities that can be performed. Then when the user makes their decision for the activity the calendar is displayed again this time with an updated icon for that date. … |
| | |
| | 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،، |
| | Hi everyone I am trying to get this done and it is not happening :to implement the method for the is Empty and is Full. I am suppose to check for an empty stack and check for a full stack But I am not getting it? Can someone see something … |
| | Hi, I wanted to change the color of the first two rows of a Jtable .How do i achieve that? I have written the follow: [CODE] TableCellRenderer render1 = null; render1 = new myCellRenderer(); [/CODE] And the renderer is written as : [CODE] class myCellRenderer extends DefaultTableCellRenderer implements TableCellRenderer { … |
| | :)Friends. I am new to struts. I am designing one Login page which works fine. Now i want to add Remember Me option to login page. Help me to do this. Thanks in Advance. |
| | Hi every one, I am new to java and am making an application where the main window has buttons and menus to be clicked.i cant find the code to use on the button so that when i click the button the window i want is displayed.e.g; i have: mainpage.java and … |
| | Hi all, i need help with this code im trying to produce. I've been searching google for days without finding any answers so please youve got to help me understand. The idea is to encrypt a string inputted by the user I wish to increment the letters at odd positions … |
| | Hey everyone. I am new to java and I am stuck in this program. I am getting error messages and cannot figure out why. On public class Rectangle I am getting error messages on lines 84, and 85. On RectangleTest line 12. Thank you all in advance for and guidance … |
| | i am trying to connect to mysql database using java. I have done connecting to microsoft access before. and i modified my code to connect to mysql server locally. i think the problem is I don't really understand where my mysql database is. anybody may point out the problem would … |
| | i have a client server and i send data perfectly to the client its when the client wants to send or update data which is the problem. what i am trying to do is check to see if the object that is passed to the server has a id and …  |
| | can any one send me a link to get the best book to learn j2me. i have to work on some mobile games using J2ME. thanks in advance.. Balaji |
| | Hi, actually m doin on project in which we need free domain space wher i can run my JSP to execute client request???can anybody help me out from this???? |
| | Hi, im trying to call this method in my class "MyWidget" which is suppose to draw a line when someone indicates the coordinates via 4 parameters. Here is the method: [CODE]public void Connect(int xline, int yline, int nextX, int nextY) { Graphics g = getGraphics(); g.drawLine(xline, yline, nextX, nextY); } … |
| | I need help with trying to convert a String of number to a Integer Array. I will then be adding the to Arrays together like any addition problem, but I am having trouble with just getting the string in to the arrays without it outputting jargon. [CODE] public static int[] … |
The End.