CheckerBoard Won't Appear - Creating A Game In Java
Mar 8, 2015
Anyway I am creating a game for my A2 coursework, most commonly known as Checkers. I have completed my code and everything works as I had planned except that the CheckerBoard itself as well as the checkerpieces do not appear to be showing.
The section of were my board should be present is just a black space. Although my board does not appear to be displaying, all of the actions I perform on it such as clicking certain section produces the planned response, and although I've checked through my code I cannot work out what I've done wrong.
CheckerBoard content = new CheckerBoard(); // Sets the CheckerBoard values into the content to be used in the next line
application.setContentPane(content); // Container holds the values together, Content pane of the CheckerBoard
application.pack(); // Use preferred size of content to set size of application.
Dimension screensize = Toolkit.getDefaultToolkit().getScreenSize();
application.setLocation( (screensize.width - application.getWidth())/2,
(screensize.height - application.getHeight())/2 );
[Code] ....
I have noticed is that within the BoardComplete(), if you change the setBackground(Color.BLACK) to WHITE, it will change the colour of the section to white, but the checkboard is still unshown.
I have my CheckerboardViewer done, my component is what I need finishing. My final product needs to be a checkerboard with alternating red and grey squares but the background is already grey. My code for the Viewer is:
import javax.swing.JFrame; public class CheckerBoardViewer { public static void main(String[] args) { JFrame frame = new JFrame(); frame.setSize(300, 400); frame.setTitle("CheckerBoardViewer"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); CheckerBoardComponent component = new CheckerBoardComponent(); frame.add(component); frame.setVisible(true); } }
I am creating a Guessing game program in java code. I am having an issue with the guess class and main/tester class running. The instructions for the game are The computer generates a random # and the user must guess that number in 7 or fewer guesses. If the guesses exceed 7, then the game is over and the user is asked if they want to 'play again?'These are things I need to incorporate into my code:
If Statement
A Loop of some kind At least three imported methods At least two methods you create Obtains input from the user At least two instance variables At least two local variables Some form of concatenation At least two calculations
import java.util.Random; public class Guess { int computersNumber; // A random number picked by the computer. int usersGuess = 0; // A number entered by user as a guess. int guessCount = 0; // Number of guesses the user has made.
I'm trying to create a tile based map JPanel but all I get is a white screen. I'm fairly new to the Java Swing and AWT package so I've been watching tutorials on YouTube so learn as much as I can. I don't know where I'm going wrong.
I've got three classes: Window.java which includes the Main method, Panel.java which is the JPanel and Tile.java to draw all the images into an array.
Window.java:
import javax.swing.JFrame; public class Window extends JFrame { public Window() { setTitle("Project"); setSize(500, 400); setLocationRelativeTo(null);
Here is my Code for the Game Of Life that I am programming to teach my self java. I am trying to create a GUI and I have done so and a window displays however i don't understand how i can get the Game of Life to display within that GUI?
import java.io.*; import javax.swing.JFrame; import java.awt.Color; import java.awt.FlowLayout; //Provides default layout managing import javax.swing.JLabel; public class LifeMain extends JFrame
I'm in the process of building an algorithm for a leaderboard for my game, but now I'm stuck.
- It is a two-player game. - The leaderboard is supposed to display the top 5 players. - Scores will be saved to an external .txt file as a reference.
Also, may I add that I still cannot decide if I should only consider the winner's score for the leaderboard, or also the loser's.
For example:
Player 1 is Juliet. Player 2 is Romeo.
At the end of the match, Juliet's score is greater than Romeo's.
Should I only evaluate Juliet's score for the leaderboard, or both of their scores? As of now my algorithm considers only the winner's score.
As of the moment I'm also only thinking of using JLabel to display the scores, but I'm not sure if this is the most efficient way to do it. I'm considering JTable.
So here's my current algorithm:
1) When the user starts a new match/returns to menu/exits game: (I provided 4 options: new game (scores remain but the board is reset), new match (everything is reset), menu, and exit.)
public class Game { //This class also holds the code for the operation of the game if (event.getSource() == newmatch)//or menu or exit { if (p1score != 0 || p2score != 0) { Leaderboard x;
[Code] .....
3) The next step which is I'm highly unsure of is to create an ArrayList for the scores (I'm missing the part about the player's name because well I'm not sure as well how I will approach it) and then sort it, but the problem after that would be how to make the score agree with the player's name, if you get what I mean.
Like for example the scores are:
Anna = 1 Pamela = 5 Gabby = 3 Sorted: 5, 3, 1
Pamela has the highest score, but how will I be able to display her name together with her score?
4) I have a checker which determines if the ArrayList of scores is empty, and if it is, it will automatically display the player's name and score (this is for the first pair of players).
It's something like this:
if (board.isEmpty()){ label1.setText(winnername); scorelabel1.setText(winnerscore); } else { // }
There's a whole lot of buzz going on and now I don't know how I should proceed.
The question pretty much says it all. My problem seems to be when adding the neighbours, I am always getting a Index out of Bounds problem. I know this is because the code is reaching for the edge of the table, for example if the column, i = 0 and the statement says to perform i - 1 and return it, then we are going to have a problem.
Similarly with anything like j = 20, j + 1 (as the grid only has 20 spaces). I understand the problem, but I am unsure of how to solve it. I have tried messing around with the if statements, but I continue to get the 'out of bounds' problem...
import javax.swing.*; public class GameOfLife { /** * @param args the command line arguments */ public static void main(String[] args) { int cellChoice = 0; int newCells = 1; int generation = 1; int neighbours = 0;
import java.awt.Graphics; import javax.swing.JApplet; public class Exercise23_7 extends JApplet { // method paint to paint a checker board pattern public void paint( Graphics g )
Im trying to create a checkerboard pattern with 2 nested for loops . I need to output asterisk characters. Im supposed o use an n int so I dont know if im limited to that 1 int. Im only getting 1 line of asterisk.
* * * * * * * * * * * * * * * * * * * * package checkerboard; public class Checkerboard { public static void main(String[] args) { for (int row = 1; row < 6; row++){ System.out.print("* "); for (int col = 6; col < col; col++) {
I've made my loop, but I am unable to get more then a 1 1 1 checkerboard properly. I am stuck on how to divide the filler characters to make the proper square size. As of now they are all one lined.
import java.util.*; public class Checker{ public static void main(String[] args) { int col, row, size; char filler; System.out.println("Please enter 3 numbers and a character."); //output
*initiating theGrid[][]* public Zhang() { con.setLayout(new FlowLayout()); for (int xDimension = 0; xDimension<theGrid.length; xDimension++)
[Code] ....
All I'm getting as a blank screen and I've searched for what to put into object oriented code to make the image show up how to program using 2d arrays. I don't get any error messages (which is good I suppose) but how to make the image show up because I have stuff under the graphics and draw methods, did I do something wrong where initializing the array?
I need to make a program that does stripes, checkerboard, and double diagonal. I can not get the stripes to work?
import java.util.Scanner; public class AsciiArt { public static void main(String[] args){ int pattern; Scanner input=new Scanner(System.in); System.out.println("Choose one of the following patterns by pressing the corresponding number"); System.out.println("1) Stripes");
I'm trying to create a cursor for a game that moves square by square. While it will move to the next square, though, it leaves the image of the previous cursor on the last square it was on.
As a visual explanation, this is what the program looks like on launch:
This is what it's suppose to look like after you press the right arrow key once (made by forcibly changing launch coordinates):
And this is what it actually looks like after you press the right arrow key once:
Here is the code for the program:
package cursortest; import javax.swing.*; import java.awt.*; import javax.imageio.*; import java.io.*; import java.awt.event.*; public class CursorTest extends JPanel implements KeyListener{
[Code] ......
I'm fully aware that I could just use g.clearRect on the area and remove it for sure, but I know for a fact I shouldn't have to as I have another program I made a long time ago that tried to do something similar without needing to resort to that.
how to create a tree data structure in java.I tried with a class consisting of node field and arraylist child nodes. but it does not satisfy the requirement.the requirement is that,
I'm getting a DOMException, "HIERARCHY_REQUEST_ERR". I know that the problem is from the following code towards the bottom in my function, but I don't know how to deal with it. When I get rid of doc.appendChild(staff);, I get rid of the problem, but it obviously doesn't add the new entry to my root element.
Element staff = doc.createElement("Staff"); doc.appendChild(staff);
I want to create a TASK MANAGER for windows OS using java. Of course i am not expecting any code snippets, that is, what are the classes to be included and moreover HOW to do it.
I'm finding common elements in a collection of arrays. This is my code so far.
import java.util.ArrayList; import java.util.List; public class CommonElements //< T extends Comparable<T> > { Comparable[] comparable; Comparable[] tempArr; Comparable[] tempArr1; Comparable[] newArray = new Comparable[tempArr.length]; int comparisonCount;
[code]....
I'm using this method to sort through my array. The method accepts a collection of arrays (of varying length and of any type) as input, the algorithm input should be no greater than n(k-1). I know I can solve it using a quadratic algorithm, but it won't meet the requirement of the assignment. I did have an idea of storing all my algorithm in one giant array. After storing as one giant array I was going to sort it. After sorting I was going to compare each array side by side and see if they are the same. Here is note my teacher provided.
Note About Testing You will need to develop several sets of test collections for testing your algorithm. The grading rubric mentions covering the case where all the test collections have the same length, as well as covering the case where the test collections are of different lengths. You will also need to think about what constitutes the worst case scenario for this algorithm, since only that scenario will make your analysis of total comparisons performed a meaningful one. You can use the formulas in the grading rubric to tell you how many comparisons you should expect in the quadratic and linear cases. For example, if you have 5 total collections (1 query collection and 4 test collections), each of which contains 10 elements, the total number of comparisons performed in the worst case should be: (k - 1)N2, which for k = 10 and N = 10 is: (5 - 1)102, or 400 comparisons. For the linear algorithm, you should only have N*(k - 1), which is 10*(5 - 1), or 40 comparisons.
Here is Q/A that my teacher provided:
1. Are the elements in the collections already sorted?The input collections may or may not be sorted. Don’t assume that they are sorted.
2. Can I sort the elements in the collections? Am I supposed to sort the elements in thecollections?Yes, you can sort the elements in the collections. It is not required that you do so, however..
3. If I sort the collections, should I count the element comparisons that are performed by the sorting algorithm?No. The only element comparisons you should count are the ones that are directly used to find the common elements. Ignore comparisons performed by any sorting algorithms you use.
4. How do I extract an individual collection from the Object[] collections argument of the findCommonElements method?You will need to typecast each collection as type Comparable[]. For example:Comparable[] currentCollection = (Comparable[])collections[i];
5. Why are we using a one-dimensional Object array instead of a two-dimensional array of type Comparable (e.g., Comparable[][])?In Java, arrays are treated as objects, so only a variable of type Object[] can contain arrays. A variable of type Comparable[] can only contain Comparable elements, not arrays. A variable of type Comparable[][] also can only store Comparable elements. Although it is possible to organize the elements such that all the elements at indexes [1][i], for example, are considered to comprise a collection, this is not the same as having an array that contains other arrays. The additional bookkeeping is required to keep a 2D array organized is more complex than simply performing the typecast described above.
6. Can I use other data structures besides arrays; e.g., HashMaps?No. Although it is easier from a programming perspective to use higher order data structures like HashMaps to find common elements, using these structures simply hides the details. If you were to examine the implementations of those structures, you would probably find that they use relatively inefficient algorithms such as sequential searches to find elements. Additionally, if you use library components, you have no way of counting the number of comparisons performed, since you don’t have access to the source code of those components.
7. Is this a trick question? I can’t think of any way to get below NlogN comparisons.It is not a trick question. It is possible to solve this problem using a number of comparisons proportional to (k – 1) * N.
I just want to ask about a kind inheritance.Let say I have an interface MachineCode.I also have different classes, Binary, Hex and Octal that implements MachineCode
Question: How can I prevent java to create an Object like this:
Binary bin = new Binary(); Hex hex = new Hex(); Octal octal = new Octal();
those declaration above must be compile error,
I want to create Objects of Binary, Hex, and Octal this way: MachineCode bin = new Binary(); MachineCode hex = new Hex(); MachineCode octal = new Octal();
I would like to use java se api names like, undo, redo, stylededitorkit, htmleditorkit in editorpane swing. So, I don't understand how to use these apis.
I have a problem with slider which i want to create jlabels in a panel by sliding the slider and get the value but the jlabel doesn't show in jpanel. Below is the code :
JPanel PanelBoxes; JPanel panel; JLabel c; public static void main(String[] args){ DividePanel div = new DividePanel(); div.go();
I have a java project in Eclipse. I make changes to this project from different computers. I think this is a good opportunity to learn and practice some source control. Is there a source control system which will allow me to do this very easily ? How about Git ? Any outline of the main steps needed to setup this thing with Git, preferably within eclipse itself ? I don't need each and every step to prepare the whole system. I only need the main steps like - download and install git on both machines, rent a server and create a repo on it, grant both computers access to the server etc.
I'm trying to create java based fairly simple forum.
The task is as following:-
• each user may post exactly one research topic;
• each each may see all research topics posted by other users;
• each each may read all messages contributed by all users on a particular research topic;
• each user may post a new message to contribute to the discussion on any of the topics posted.
Something like below:-
User topic: Intrusion Detection Systems Posted by: John [22/10/11 14:00] John wrote I am building a new IDS based on neural networks. …………….Comments ………….? [22/10/11 14:12] Kate wrote there could be too many false positives!
I've done basic programming in java using Netbeans IDE. So I've good foundational knowledge in java programming. Now I looking forward to draw shapes in java and eventually learn to make simulations. Now I want to learn to create geometric shapes like circle triangle, rectangle etc. I don't know in which Jcomponent(s) should I set the drawing of the shapes, the codes, the libraries and classes I need to import.
