32,199 Topics
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 | I am a newb, do not go to college and am learning Java on my own time. This little project is a learning exercise so I ask that any help just points me toward a right direction. It is a character generator for a table top game, that may or … |
| | I have an assignment where I have to have seven different lottery numbers ranging from 1 to 35. A separate powerball number should also be generated. The powerball number should be within the range of 1-10. I have to write a java program that gives eight sets of seven numbers … |
| | I am trying to setup a simple dll that will allow me to run C++ code from Java, to start I chose to create the function HelloWorld, I can get the library to compile and load but when Java calls the native method "hello()" it throws the exception java.lang.UnsatisfiedLinkError. How … |
| | Hi, im currently studying for my final test in java beginner class, so there is a problem that i couldn't solved until now, i'm totally beginner and have search the solution for almost two days :( The program is taking variabel n from other text file, then this n will …  |
| | Hello, I am having problems in bMethod. The program compiles but there is no output display for bMethod. I am trying obtain a set from aMethod and assign this set to a suitable local variable in bMethod. Which I think where the problem is. I want trying to display both … |
| | Hello all, I am new here and fairly new to java and programming in general. I decided to make a little color chooser hoojie for fun (jar file attached), but it is tremendously slow. Partly it is my fault (code def not perfect..) but when I checked what was taking … |
| | Which is the best book or site for learning JAVA perfectly? What should i install on my PC to learn programming in JAVA environment?? I dont know anything abt JAVA. I am just a beginner. please help me out thanks  |
| | Hi, I have written a program where i have used array of 4 Buttons as i click on any of the buttons it image changes and on re-clicking the same button it images changes back to the original image.It is working alright but the issue is that the image which … |
| | Hi! I have a problem with getting an arraylist to work within a JList. I have posted 5 classes; a GUI class - GrafikInl6, a class with most of the methods - Functionality, and then an abstract baseclass Runner6 with the two subclasses EliteRunner6 and Jogger6. My problem is the … |
| | hey guys, i just started working on one of the projects well its has been already finished all im doing is making a few changes and it contains two .dll files (in the root of the project) if they are removed project does not compile and stops functioning otherwise (if … |
| | The ConcurrentHashMap is thread safe without locking the entire table but it doesn't remove the race conditions like if we query for a key and at that time the key is not there, so in the next instruction we add the key's entry to the map. Between the two things, …  |
 | Hi friends, I need to work with an application that exposes SNMP interface. I have googled to check SNMP in general but I find it difficult a bit. I know in HTTP you send request and get response and with the two you can play around. I have never done … |
| | Ordinary Maps use the following test for equality (k1==null ? k2==null : k1.equals(k2)).) IdentityHashMap uses k1==k2. My question is that even Object's equals() method returns k1==k2. Only when the Object's equals method is overridden inside a class, does it perform content based equality comparison. So, IdentityHashMap could have used Object's … |
| | are there any codes whereby it can read the first and last word of all the lines of a text file? I would need to read the first and last word of text files and make sure both the first and last words matches the conditions then print the lines … |
| | Hi All I really need help in this. Im supposed to "extract" information from text files . the text files looks somethings like this: MODEL 1 ATOM 1 N SER A 253 -19.559 -25.512 -41.130 1.00 0.00 N ATOM 2 CA SER A 253 -18.749 -26.500 -41.895 1.00 0.00 C … |
| | [code]import java.io.*; class Ex33 { public static void main(String[] args) { Console console=System.console(); System.out.println("Please enter a number"); String input; input=console.readLine(); int n1; n1=Integer.parseInt(input); double sum; int LessThanAv; for(count=0;count<100;count++) { sum=(n1+sum)/count; System.out.println("Please enter the next number"); } while(n1<sum;) { System.out.println(n1); } } }[/code] |
| | [U]Okay im a desperate need of some help here im currently doing a uni java project... im creating a single player battle war game that is turn based. ill give the overview i have wrote underneath but i need some help sorting out was classes i need and putting them … |
| | i want web based project topics in java.who's r not common in development means i want smthing defferent topic which is not more complex n easy 2 built....so pls give me sm topic...4 ma project.... |
| | hai...... plz... tell me some miniproject topics in java.we are planning to do it in 30 days. |
| | having a problem with executing this in jGRASP not acceptin user input [CODE]class salestax { public static void main (String[] args) { try { double price = Double.valueOf(args[0]).doubleValue(); double salestax = price * 0.0825; System.out.println("Sales tax is " + salestax); } catch (NumberFormatException e) { System.err.println("Usage: java salestax price" ); … |
| | Hi How can I stop a class method execution ? I have been reading and the most similar solution I found is use Threads....is there another solution ? Im working with jasperreports, In order to generate report I just call single method to start the report print and another method … |
| | The problem is that it gets stuck on public static void queryChange(String string) { System.out.println("Sending Query: "+string); try{ System.err.println("queryChange 1"); Connect(); System.err.println("queryChange 2"); [COLOR="red"]conn.createStatement().executeUpdate(string);[/COLOR] System.err.println("queryChange 3"); }catch(Exception e){ System.out.println("SQLException: " + e.getMessage()); } System.out.println("Sent Query: "+string); } java doesnt error it just gets stuck. Sent Query: UPDATE `servers` SET `playersCurrent` … |
| | I am new to Java, and I am working on a program that functions as a calculator. I have the code for the calculator written, but I need to make a GUI for it, because as of now the only way I can see output is by running it within … |
| | Can you people please help me in this program using only nested loops? I cannot use bufferedreader or charAt function Hard coding cannot be used. [B]The dots all stand for spaces[/B] The pattern is:- abcde .bcde ..cde ...de ....e ....ed ....edc ....edcb ....edcba The spaces are mandatory. [B]The dots are … |
 | So here's the scoop: The company where I work has a few GUI-based Java programs that runs crazy fast in Windows XP. Upon upgrading 6 machines to Windows 7 (and yes, we definitely exceed the requirements to run Windows 7 on our machines), these Java programs run significantly slower (For … |
| | For the Object class' equals method, the API says :[QUOTE]The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object … |
| | hey everyone !!! well i got a very annoying problem i am teaching my self about java and especially about developing programs that could be used by Nintendo wii remote. i have recently found a perfect program that has been created in java and created for nintendo wii remote and … |
| | I need the node sorted (selection sort) whenever the data is entered front or end or deleted front or end. How to get it sort automatically everytime user entered a data? countItems() doesn't seem worked to the selection sort... This is my Node class. Mostly no problem... [CODE] public class … |
| | [B]Im stuck on how to display 5 integers in ascending order.i only have the idea to input 3 integers.what is my lacking to my code.Can you figure it out.thank you so much.hope you gonna help me[/B][code]import java.util.*; public class ascendingorder { static Scanner console = new Scanner(System.in); public static void …  |
| | Hi, Im working on java program for make a simple converter from celcius to reamur and fahrenheit i want to make an exception handle if user try to insert celcius = 0 and >100 using try & catch feature in Java, but until now i couldnt make it, here is …  |
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