36,051 Topics
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 | Hi guys, i'm trying to program a simple Tic-Tac-Toe game with extern Buttons. When i'm compiling the Code there's no mistake, when i press Button1 every thing ok, but on the most other Buttons a mistake is shown up : Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at grafik.Zeichenfenster.farbeAufloesen(Zeichenfenster.java:330) at grafik.Zeichenfenster.zeichnen(Zeichenfenster.java:276) at …  |
 | import java.util.*; public class EmployeeTest { public static void main (String[] args) { Employee[] staff = new Employee[3]; staff[0] = new Employee("Carl Cracker", 75000, 1987, 12, 15); staff[1] = new Employee("Harry Hacker", 50000, 1989, 10, 1); staff[2] = new Employee("Tony Tester", 40000, 1990, 3, 15); for(Employee e : staff) e.raiseSalary(5); … |
| | Is there a way to convert a double to string. I tried to do it like this x.toString() and it didnt work as well as implicitly converting it. |
| | Why the method of the following class is getting invoked several times even if the condition is false.Please help me with my code... public class PRDDayBook { int remX; public PRDDayBook(int x) { remX = x; PrinterJob pj = PrinterJob.getPrinterJob(); PageFormat pf = pj.defaultPage(); Paper paper = new Paper(); double … |
| | how to get refrence of notepad what we havae created using runtime class.,,as i want to write data on that notepad what i m reading from another notepad..can i have an example.? |
| | Please how do I convert a string of hexidecimals “10B71356C845FB08E04951AAA2FF9F49” to integer? I tried using getBytes then Integer.valueOf but I got 32 integers instead of 16. Any help would be greatly appreciated. Thank you. |
| | hi... I want to write a program which will find out the complexity of a given program or code given as a input through file...... plz help me..... |
| | > Quoted Text Here i got this code from a book i am practicing with and when i try to compile it returns the following error EmployeeTest.java:30: incompactible types found : java.util.Date required: Date hireDay = calendar.getTime(); please how do i debug it import java.util.*; public class EmployeeTest { public …  |
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| | I am not able to figure out what's wrong with the following code: Is it a rule to create objects in class that contains main method and then use this object to access the methods? I did exactly reverse in the following code and i am not able to compile … |
| | hi all, This is my first post in this site. I have a sentence like this String input = "India/world is my Country and it is in Asia/in world"; I want to remove the word followed by the / and get the result of otheres. Output **India is my Country … |
| | Hi I have a program that I am to write that is suppose to read from a text file. I am suppose to assume no more than 100 item and terminate after by -1. have to read and store the data. I have to write a method to print the … |
| | Hi There, please guyz, can I please have The code that generates student's code using the first letters of their Names. |
| | Hello everyone, I progress step by step my problem, one step is passed -now I can send string datas -text messages- here another step is I want to record some audio sounds by using microphone in first android emulator assume phone1 and send to second android emulator-phone2-. I found whole … |
| | how to convert truststore file into .cer file by using ssl tool |
| | I'm trying to learn Java, pretty easy so far as my previous experiance is with C/C++. I was just curious how to call java classes from different files. That way I don't have to have main as well as all of my classes crammed into one file. I'm sure the … |
| | Please I am relatively new to Java and would really appreciate your help. Can anyone please tell me what I am doing wrong. I'm trying to send a string to an oracle and save it's output. My program just hangs when I get to this block of code. try { … |
| | I have to write a program in java to compute the standard deviation and the mean. I am also to write a test program that will prompt the user to enter 10 numbers and display the mean and standard deviation. I have stared on the program and so far this … |
| | Hi, Im working on a html5 parallax site. I have a problem with the javascript, that it is not detecting the screen resoultion thought I have right css files in my folder. My js detects for one type of screen resolution but it is not detecting the remaining screen types …  |
| | Hi this is a PSEUDOCODE. I don't know if is the right place to ask. Can someone takes a look of my pseudocode? I am not sure if I understood the assignment. Thanks! Equinox Nursery maintains records about all the plants it has in stock. The nursery needs a program … |
| | On the jsp page; I have a logic:iterate tag which loops through data from an xml file and displays it within a drop down. How do i take and store the selected option from the drop down into the form-bean for processing. |
| | I Want to draw a grid over image that is set or loaded on to a JLabel ,,,,,, when i draw a Grid it push the image forward on JLabel and take place of that image on JLabel ,,, |
| | I initialize the selenium like [CODE]public void setUp() throws Exception { setUp("http://localhost/", "*firefox"); } [/CODE] and I write my test in the method like [CODE]public void testUntitled() throws Exception { boo(); foo(); }[/CODE] But it gives error like [CODE]java.lang.RuntimeException: Could not start Selenium session: Failed to start new browser session: … |
| | Hi I am new in this forum. I need some help with this code and is for my intro to programming class. I did it following a pseudocode I found in other website but I am totally confused now. It is not working. Do nothing. Thanks This is the assigment … |
| | I have one CSV file containing so many attribute but i want max and min values of particular specified columns. I have write following code for finding minimum value from each specified column,but i got only minimum of last column, not all column. In dataset.csv file contains 25,185,98,65 15,-20,6,95 17,20005,63,-78 …  |
| | Dear all, I have one question arise in my mind while i am making my project. I have one column "AGE" is there.So many values are stored in this column ranging from 0-100. I also have find frequency of each age like age=5 comes how many times in my column … |
| | Hi I am just starting to learn about java.I am trying to calculate BMI of an individual using the JOptionPane.showInputDialog method who I am asking to enter 4 things first name,last name,height in inches and weight in pounds. I want to show the BMI using JOptionPane.showMessageDialog method showing their full … |
| | hi my name is hiroshi.. im new with java programming.. my prof gave us an assignment to make a calendar.. i don't know what to do.. my head going crazy i dont know what is wrong with my code.. please help me T_T your big help is much appreciated.. import … |
| | De Morgan’s Laws. We have discussed the logical operators &&, ||, ^ and !. De Morgan’s Laws can sometimes make it more convenient for us to express a logical expression. These laws state that the expression !(condition1 && condition2) is logically equivalent to the expression (!condition1 || !condition2). Also, the … |
| | i need help with building the controller by using MVC pattern view 1 import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.*; public class BankView { JFrame frame; JPanel one, two; BankSaving saving = new BankSaving(); BankCurrent current = new BankCurrent(); BankView(){ frame = new JFrame(); one = new JPanel(); JButton b1 = … |
| | i have write a code for making a string that is being read from CSV file. i want to make a string from particular location of each and every line. i have attached a code what i have done.but i want it as it for any number of location. In … |
| | > Hello, I am hoping to get some advice on what I might be doing wrong. This is the second program I wrote but I am still very new at writing any JAVA code so please bear with me. Instructions are - Create a Mortgage Calculator to display the original … |
| | I have created an application with report features. report features is created via iReport My application also contains a reports folder containing all .japser files Here is the code public MyiReportViewer(InputStream stream,HashMap parameter) { this(); try { /* load the required JDBC driver and create the connection here JDBC Type … |
| | i need help with the punctuation check box. there's no supposed to be punctuation when it's not check. Im using netbeans.  here's my code  |
| | Eg.407 4*4*4=64 0*0*0=0 7*7*7=343 now 64+0+343=407. Any number which satisfies the above condition is called as Armstrong |
 | Hi. I am a very beginner at Java. I am taking an online course on Java and I'm stuck on an assignment. Anyone who is good with Java, can you please take a look at my code? This assignment was due yesterday but I couldn't finish it. It is very … |
| | Given an Arrayl.ist that contains a list of Employee object references, describe two ways in which you could write code to make a copy of that ArrayL ist. (Hint: one way would be a shallow copy). Use code examples to illustrate your answer. Discuss the implications of each way you … |
| | Hello guys, I start to learn&code some basic small client/server console applications in java -especially in android- and also I try to learn Threads, in fact, I managed to connect 2 different machine by uploading different projects to these machines, for example one project only consists of client and the … |
| | **this is the code!** import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.font.FontRenderContext; import java.awt.font.GlyphVector; import java.awt.geom.AffineTransform; import java.awt.geom.Point2D; import javax.swing.JFrame; import javax.swing.JPanel; public class Clock extends JPanel{ public void paint (Graphics g) { Graphics2D g2d = (Graphics2D) g; g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); String s = "12 1 2 … |
| | hey everyone, i am trying to write a code that will calculate the sum of all values in a column of Jtable. the total sum will change when a row is removed or added. i tried many ways. i need help urjently. :)thanks |
| | Hey guys! Ok, so my problem is that I'm trying to add something that says "num1 does not equal 'a number'" I want it to read any number I put it, but not anything that isn't a number. If I can figure this part out, it should loop where I … |
| | Hi i have a quick question. If i have a java application are their any third party applications that can help me run it on an html website without porting it to a JApplet. |
| | I am creating a program that will do 67,108,864 calculations using Netbeans. But when I run it, there is an error message: java.lang.OutOfMemoryError: Java heap space. I have tried several things to overcome this problem: 1. I changed the setting of VM Options of the Project Properties. I even set … |
| | hi, i need to display dfferant images in a single label . here is the coding, import javax.swing.ImageIcon; if (ALBtbl1.getSelectedRow() == 0) { picLbl1.setIcon(new ImageIcon("C:\\Documents and Settings\\kezia\\Desktop\\TMK.JPEG")); the problem is that the image does not get displayed in the label. please i need solution urgently. thanks |
| | I have this code and I have been trying to figure it out for a while now but i cant get it to work .My basicproblem is I cant get the paint part or the programme to work properly. I have done several paint programmes in the past but i … |
| | I have to pull the data from DB2, CollableStatement cs =conObj.prepareCall("call " + db2Creator + ".IVR_LOOKUP(?,?,?,?)").... whereas 2 fields are input and 2 are output(output are not fields but they are support to retrieve the rows...). ex:- if i/ps are "23" & "Raja", O/p parameter 1 should fetch 5 rows … |
| | Hi, I am using Selenium Grid and running my test cases on remote machine. And i am also using Screen recorder to record video for my test. When i start Screen recorder, it only starts in the hub machine (my machine). So i thought to run the Screen recorder on …  |
| | sorry for my english but im really so desperate. This is due next week monday, and i don't know what do to or even where to start. Our professor didn't explain this homework , she just gave us a photocopy problem, we dont have any reference to look at. soo …  |
| | I am trying to implement a JScrollPane, containing a JTextArea, whose vertical scroll bar automatically remains as the bottom when new text is added, if it is already at the bottom, and stays in place otherwise. I have found a solution that seems to work, except when I move the … |
| | import java.awt.*; import java.text.NumberFormat; import java.util.Locale; import javax.swing.*; public class SalesFigures { public static void main (String[]args) { float prod1 = 0, prod2 = 0, prod3 = 0; float prod4 = 0, prod5 = 0; String inputString; int prodId = 1; // Need user input to determine outcome while (prodId … |
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