32,204 Topics
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| | I am getting errors in my action listener brackets that I do not get, can someone help me please?? My buttons are not working, not sure what's happening. plus when I try to write [code] newGUI();[/code] I get another errors saying it cannot find the symbol, but my method is …  |
| | I'm too new in java and I always appreciated when you share with me your knowledge. Here I'm trying following self-test exercise; Give two declaration for two variables called feet and inches.Both variables are of type int and both are to be initialised to zero in declaration. I try this … |
| | The program will give the following output 55 45 36 28 21 15 10 6 3 1 0 Now, I have managed to print only the followings: 55 45 36 28 21 // This line with some kind of error though it ran. Now what should be the addtional codes … |
| | hi..can anyone explain to me?? i am very confused abt this two.. for example; iint m [] = { 3, 2, 5, 2 }; int k = 0; System.out.println("(a)" + m[ k++ ]; System.out.println("(a)" + m[ ++k ]; *i compiled..but i dun understand why is the result 3 and 5 … |
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| | Hy everyone, Thank you for taking your time to explaind me this, I very thankful for all of you. I'm been searchin what kind of a Script is it - so foergive me if I'm at wrong post - but no luck. Take a look at this 2 website examples … |
| | How would you draw a expression tree that is (a-2/(5 * b) plus 3) * (2 * d)? I am really confused on the first parenthesis. Thank you for your help. |
| | Hello I am trying to read a node that will find the longest word in a tree. So, my method is a public static int word(Node d) So how would I have to find the length of that node? Would I just use the string that was made in the … |
| | I have a program. Here import java.awt.*; import java.awt.event.*; import javax.swing.*; class MarqueeTest { public static void main(String[] args) { MyFrame frame = new MyFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } } class MyFrame extends JFrame implements ActionListener { private ActionListener listener; private Timer t1; public MyFrame() { Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); setSize(d.width,d.height); … |
| | I an trying to write a few java classes, which I wrote successfully, but when I am tryin to test it I get some weird errors and I cant figure out why, so i'd be very grateful for your expertise. The code for the GCD class is: [code] public class …  |
| | Hey DW. Working on a nice poker application and need some help. Right now I'm trying to go through two arraylists, one of chars and one of sorted ints (representing the suites, and numbers of the cards) and delete duplicating numbs (and the char/suite counterpart in the other array). In … |
| | hello everyone, i am trying to write a code that displays a table with 75 years. each year has to display the world population and the projected population for the following years after that by multiplying the current population by the yearly growth (1.17) but i am running into some …  |
| | i`m making Quiz program which asking State and you answer capital. here is code import java.util.*; import java.awt.*; import java.applet.Applet; import java.awt.event.*; import java.io.*; import java.util.Random; public class Quiz extends Applet { private String textfile = null; private TextPanel text_p = null; private Vector question = new Vector(); private Vector …  |
| | the program draws lines, but every time I draw a new line, the previous one disappears. How can I let it show all the lines drawn? I know my problem is in the array, but how to fix it? thanks for help [code] import javax.swing.JPanel; import java.awt.*; import java.awt.event.*; import … |
 | Hi all, On compiling, i get no errors at all, the data is taken, but when checking the database, a record is made, but it is NULL. What have i missed? [code] /* * To change this template, choose Tools | Templates * and open the template in the editor. … |
| | I run the program, from what I see the game runs fine. Then when I click on the object that suppose to send a dialogue, it disconnects me and throws this error in the run.batch window. [CODE]Exception in thread "main" java.lang.NullPointerException at NPCDialogue.UpdateNPCChat(NPCDialogue.java:18) at client.process(client.java:8471) at PlayerHandler.process(PlayerHandler.java:137) at server.main(server.java:55)[/CODE] Here …  |
| | hi guys im tryin to do a java client / c++ server socket program .in the java client program i serialize the object and pass them over socket to c++ server.now when im gettin them in c++,im not able to deserialize it properly as i tried for binary serialization since … |
| | Hi all, this is a bit of a follow on from a previous post, but slightly different so thought a new post would be best. i want to pass my scanner variables into an object. the following is the last scanner (Added as example), followed by the creation of a … |
| | Hi all, I have a constructor with 2 numbers both set as longs however in my driver class, it is showing as an error, even after casting the already longs to a long again. This is constructor [code]public Personal(String forename, String surname, long dob, String add1, String add2, String county, … |
| | i need to write a method that in my program student object for the student class that validates it's own data. background on student class: it's a program that ask for a name of a student and 3 test scores and print the highest , the lowest and the average. … |
| | Hey everyone. I have to write a program that estimates the value of mathematical constant e by using the following formula and i have to allow the user to enter the amount of terms to calculate. the only problem is i dont really know how to get started with this. … |
| | So, I'm stuck trying to figure out how to move the object. I am using the keyboard as a call to Key Event to move the object. Right now, it isn't moving. I'm pretty sure that this is correct. [CODE]import java.awt.Color; import javax.swing.*; import java.awt.Graphics; import java.awt.Image; import java.applet.Applet; import … |
| | So I have spent some time on this.... Write a program named TrafficLightcontroller Program should have a main method Construct three TrafficLight objects named:light1,light2,light3 Repeatedly print a menu that allows a user to type in responses and control the three lights. Menu: Select traffic light (0 to quit): 1 1)change … |
| | have a java program that have evaluate thefunction,calculate the derivative and roots haw can i demonstrate numerical methods to solve the runge kutta method. This ma functiuon package Iterative.Newton; import java.io.*; import java.text.DecimalFormat; public class Newtonlastest { public static void main(String[] args) throws Exception{ BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); … |
| | Hi, I am a new user of Fedora. I should work with an open source package which works in Linux. Therefore, I installed Fedora 11. At the moment, I must install Apache Ant to continue. However, I am confused! I don’t know how. I appreciate if you tell me the … |
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| | Hi, I have used Tokenizer to split a user input string into tokens and retained the delimiters (R and K). Is there any way to combine each delimiter with it's preceding token to create a result string? eg change tokens FGADA and R into one string FGADAR which I can … |
| | I am a student really struggling with Java and needless to say, I am pretty isolated from anyone who gives a care enough to help me, I am on my 8th week and really struggling with GUI's I have some code written, but the gui will not display, I am … |
| | anyone knows how? if its empty or null? events.get(x).getOccurredDate() == null thats not working. neither events.get(x).getOccurredDate().equals("") |
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