35,618 Topics
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| | Hi Guys, Im currantly having a problem with simulating balls bouncing of each other in a 2d space, everything is working and all, but it just doesant seem natural for me... If we had any math wizzes here now is your time please:) my circles are painted inside of rectangles..... … |
 | Hey guys, I am at the very beginning of learning Java and my task right now is to code a maze (2D Array) and let a bot automatically solve that maze using only the right hand rule. If I let the programm run it prints out an infinite number of …  |
 | Hi I have made a desktop application and i have to print some data to printer.For this purpose I have done my code and ran it successfuly and test on xps doucuments and on oneNote . I have no physical printer but i am satisfied by testing it on xps … |
| | Hi Guys Its me again, wasnt sure if i should start a new thread so i just did :) I completly redid the code Now im having a problem with the renderer again. It called called in the timer of the controller class... but it doesant get called? Also my … |
| | I am trying to follow the sample of the barcode reader from codelabs. However I am stuck, could someone help me out please. [Codelabs tutorial](https://codelabs.developers.google.com/codelabs/bar-codes/#0) I have updated the manifests to include the vision libaries. import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.util.SparseArray; import android.view.View; import … |
| | Currantly trying to make a simple game but i cant get the renderer to repaint. My problem is that i used to make everything in 1 class... much simpler. But now im just not sure anymore. This is what i have so far... it just wont repaint. (Note i have … |
| | Hi! I have developed a desktop application in java. Now I want to do payment integration with this app. Actually I have to do payment integration for first time in my life. So i have some questions/confusions for payment integration. But before asking those questions I tell you that what … |
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| | Hi Guys Just starting to make my first java game, im getting a few errors. Im just trying to figure a few things about about the game loops before i get started and this is driving me crazy when i just call the renderer to repaint after i initialize the … |
 | All information related upcoming ERP Cloud systems by Oracle |
 | Hi guys , is me again ! I get stucked on this question Write a program that read an integer and display its smallest prime factors in ascending order. For example, if the input is 60, the output should be 2,3,5... I came out with below code, but I get … |
 | It sorts names in ArrayList, but how exactly does it happen? public void sortStudentsAlphabetic() { int i, j; Student temp; Student[] array = new Student[studentsList.size()]; for (int k = 0; k < array.length; k++) { array[k] = studentsList.get(k); } for (i = 0; i < array.length - 1; i++) { …  |
| | Use a **for** loop to find the smallest integer n such that n^3 is greater than 1000 So I came out with below code public class Chapter4 { static int n = 0; public static void main(String[] args) { for (int i = 1; Math.pow(i, 3) <= 1000; i++) { … |
 | Hello, I'm new in java programming, i have insert amounts in database in this Format exp : 1.100.200,00 but the subtraction of this amount give false result . here is part of my code DecimalFormat df = new DecimalFormat(); DecimalFormatSymbols symbols = new DecimalFormatSymbols(); symbols.setDecimalSeparator(','); symbols.setGroupingSeparator(' '); df.setDecimalFormatSymbols(symbols); statement = … |
 | hello please i need help, am writing a project to check if a particular folder exist in client system , if not let it create it, but if found let it delet it from client side immediately the client visit the site. i try this on my localhost it work … |
| | So, I've created a program that when a user inputs a type of vehicle, it will print how much will the user pay for their fare. Here's what I have so far: How do I call the methods Vehicle, Vehicle1, etc.. so that I am able to print the fare …  |
 | Draw a flowchart and write the pseudocode to represent the logic for a program that will open two files, input and output. |
| | Write a program that displays all numbers divisible by 3 and 4 within a range entered by user. Display five numbers per line. Numbers are separated by exactly two spaces. This is my code public class Chapter4 { public static void main(String[] args) { Scanner input = new Scanner(System.in); final … |
 | I have a question about the dining philosopher problem. This is not about homework. I seem to have solved it, does it actually relate to anything? Is there any software that actually requires it? |
| | I'm working on assignment that requires me to generate and store 50 random PPS Numbers in an array but I'm not sure as to how to go about doing this. Keep in mind that I'm not asking anyone to do this assignment for me, this is just the part I …  |
 | SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy"); Date date = sdf.parse(d); Calendar cal = GregorianCalendar.getInstance(); cal.setTime(date); for (i=0;x>i;i++){ cal.add(GregorianCalendar.DATE, 7); String t = sdf.format(cal.getTime()); DefaultTableModel model = (DefaultTableModel) jTable1.getModel(); model.addRow(new Object[]{t,c}); }  |
 | heyy can anyone please help me with this homework in java because i am new at this Create a program where it should appear in a dialog box your name,last name and the avarage of four exams :) |
| | hi pple I am building this electronic role using an interface. during the course of designing the interface, tried running it just to see the look and feel of it and it is not showing can someone tell me why this happen. here is the code. havent start coding it … |
 | Hi, first timer here so sorry before hand if I forget to mention something. My code run the window fine but when I hit the calculate button I receive an error message. Firstly this is my code package Chapter12; import javax.swing.*; import java.awt.event.*; public class TheaterGUI extends JFrame { JTextField … |
| | Hi, I want to find all the words(scabble words) that can be made out of given set of letters. ex: abnana results: a aa ab an baa ban banana na nab How could i achieve this? Do i need a binary tree? Plz some one help me... |
 | I am working on implementing a binary search tree as an array implementation, but I am having trouble with correctly printing out all of the students' records using the showAll() method and my application also doesn't print out anything for the insert and fetch methods. What am I doing wrong? … |
| | HI! I have made an desktop application, which i have to install on my client's pc. But I want that, except that particular cleint's pc, no other pc could run it. For this purpose i got a solution to get mac address of that pc and make a check for … |
| | how to reverse words in a sentence without using split or string tokenizer. I/p :- how are you O/p :- you are how |
 | So I am confused as to how to generate random integers between a range, in the first one it says to make the range from 0 to n-1 and the precondition is that n has to be greater than 0. For the second import java.util.Random ; /** * This class … |
| | I am creating a reporting engine, it is kind of novel. **The only question I have is what are some of the wierder scheduling related things you guys have seen for you cyclical computer programs to date**. I am trying to cover as many fringe cases as I can, and … |
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