Error In Battleship Game
Jun 8, 2014
I'm trying to make a simple battleship game, but when I make a ship with the addShip method (it is suppoused to initialize the board with the numbers 1,2,3 or 4 depending on the ship type, at the given coordinates) it dosen't initialize the field with any numbers, although the method returns true. The place the ship is suppoused to be made stays initialized with ".",
package battleship;
public class Sea {
private int width;
private int height;
private String[][] field;
[code].....
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Oct 24, 2014
I'm working on a project and I can't seem to get it working. It is a battleship game, in a one dimensional array. This is as much as I got. I can't get the 'river' to display when I run the program. How I might get it to work?
import java.util.*;
import java.util.Random;
public class Battleship
{
static Scanner input = new Scanner(System.in);
public static int promptForInt(String prompt)
[Code] ....
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Dec 3, 2014
I have an battleship program that I would like to improve in performance. I know that using certain algorithms it can be improve however I am beginner in Java. I would like any recommendations and or hint in how to improve this game. The are 5 ships per game and the computers plays 10000. I just want to sink all ships in as many shots as possible.
Main class
package solution;
import battleship.BattleShip;
import java.awt.Point;
import java.util.List;
[Code] .....
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Nov 11, 2014
I want to make the board for the game, I want it to be a two-dimensional array of buttons.I know how to make a array but is there a class of buttons that I need to use? and how do I connect it to the xml?I am using eclipse.
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Feb 21, 2014
Code for implementing a simple computerised version of Battleships has been supplied. Examine the code ensuring that you understand it. The game is played against the computer.
A number of ships (default is 6) are place randomly on a 4 x 4 grid. A ship occupies one square only. The player then guesses the position of a ship. If he/she guesses correctly the ship is HIT and sinks. If the guess is incorrect the player loses a life. The default number of lives is 7. If the location has been guessed already, no lives are lost.
When the game starts, a 4 x 4 grid should be displayed.
The user should be allowed to enter/select a cell location. If the selected cell contains a ship, the ship will be destroyed. If not the player loses a life. The cell should display an appropriate picture, icon or message informing the user of its current state.
The number of lives and number of ships remaining should be displayed.
When the game ends an appropriate message should be shown informing the player whether he/she has won or lost. The positions of the ships should also be shown.
The purpose of this assignment is that students demonstrate an understanding of the Java Swing library and that he/she can navigate and use the API effectively.
Your finished GUI should be both user-friendly and aesthetically pleasing.
Ideally, the user should have the option to play another game, to quit or give up mid-game. You may also wish to include other options such as different levels of difficulty, etc.
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Jun 4, 2014
I can't figure out this problem that I'm having in my Pong game. It's compiling fine, except when I run it, it gives me an overflow error.
Here's the code:
// Pong
import javax.swing.JFrame;
import java.awt.Color;
import java.awt.Graphics;
public class Pong extends JFrame {
private static final int WIDTH = 400;
private static final int HEIGHT = 400;
[Code] .....
Here's the error:
java.lang.StackOverflowError
at sun.awt.AppContext.get(AppContext.java:604)
at com.sun.java.swing.SwingUtilities3.getDelegateRepa intManager(SwingUtilities3.java:120)
at javax.swing.RepaintManager.getDelegate(RepaintMana ger.java:1625)
at javax.swing.RepaintManager.addDirtyRegion(RepaintM anager.java:445)
The error keeps going for a lot of more lines.
The line that gets highlighted is the first bracket of the Pong constructor.
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May 8, 2014
So I am creating a game in Java, the game works fine when I run it in Eclipse but when I export it it does not draw anything on the screen.
I added a try and catch for nullpointerexceptions but the game does not throw any nullpointerexceptions.
What is the problem?
The game seems to be finding all the images & resources since it does not throw any NullPointerExceptions...
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Jan 2, 2015
I'm trying to fix this logic error in my slot machine game where no matter what slot combo comes up, it says you have won $10 and proceeds to add that amount to the balance and subtract the bet amount to the balance, even though it is not a winning combo! I've been trying to solve that and when doing so, I commented out Slot1.randNum1 == 0, Slot2.randNum2 ==0, and Slot3.randNum3 ==0 and anything relating to see if that was the problem, and it seemed like it was, because after that, the logic error described above was gone, but in doing so, the loss/win counter didn't increment, nor did the program pick up on the winning combos. However, I do not know why commenting out anything relating to randNum ==0 would cause that.
Here is the code for the processing (as you can see, some parts are commented in attempt to fix the logic error, but right now the code below is for the logic error that keeps on telling that the user has won):
public void askData ()
{
title ();
int betAmount;
while (true)
{
try
{
c.setCursor (3, 1);
[code]....
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Dec 11, 2014
import java.util.Scanner;
import java.util.Arrays;
public class LotteryTester {
public static void main(String[] args) {
LotteryApplication lottery = new LotteryApplication();
int lotteryNumbersCount = lottery.getLotteryNumbers().length;
[Code] ....
Everything works fine but when I run it the matching numbers tends to be off. For example I will type Enter in 1,1,1,1,1 for my 5 numbers. The lottery numbers will be 5,3,4,5,8 and it will say 1 number matched.
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Nov 29, 2014
I'm having some difficulty getting this GUI dice game to compile. I'm using javac and notepad++ for this and I'm getting the following errors:
DiceGame.java:34: error: cannot find symbol
die2label = new JLabel();
^
symbol: variable die2label
location: class DiceGame
[Code] ....
4 errors
My code is as follows:
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
public class DiceGame extends JFrame
[Code] ....
I'm sure the problem is something trivial, but I guess that's all part of the learning process that I have to go through.
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Apr 23, 2015
I wrote a program that would play a game of Hangman. It plays the game but it keeps on bringing up a exception error. This is my class code
import java.util.ArrayList;
class Assignment2Q4
{
private final ArrayList<Character> guessList = new ArrayList<>();
private final char[] charArray;
private final String secretWord;
private int guesses;
[Code] ....
This is the output that is given:
Enter the secret word:
pizza
Guess a letter:
d
?????
Guess a letter:
[Code] .....
Also when I guess the first letter of the word correctly it stops the program without going further on with the guessing.
Like for ex. P????
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Mar 12, 2015
Opoly works this way: The board is a circular track of variable length (the user determines the length when the game app runs). There is only one player, who begins the game at position 0.
Thus, if the board length is 20, then the board locations start at position 0 and end at position 19. The player starts with a reward of 100, and the goal of the game is to reach or exceed reward value 1000. When this reward value is reached or exceeded, the game is over. When the game ends, your program should report the number of turns the player has taken, and the final reward amount attained.
In Opoly the game piece advances via a spinner - a device that takes on one of the values 1, 2, 3, 4, 5 at random, with each of the five spin values equally likely.
Although the board is circular, you should draw the state of the board as a single "line", using an 'o' to represent the current player position, and * represent all other positions. Thus if the board size is 10, then this board drawing:
**o******
means that the player is at location 2 on the board.
Here are the other Opoly game rules:
If your board piece lands on a board cell that is evenly divisible by 7, your reward doubles.
If you land on the final board cell, you must go back 3 spaces. Thus if the board size is 20, the last position is position 19, and if you land there, you should go back to position 16. (If the position of the last cell is evenly divisible by 7, no extra points are added, but if the new piece location, 3 places back, IS evenly divisible by 7, then extra points ARE added).
If you make it all the way around the board, you get 100 points. Note that if you land exactly on location 0, you first receive 100 extra points (for making it all the around), and then your score is doubled, since 0 is evenly divisible by 7,
Every tenth move (that is, every tenth spin of the spinner, move numbers 10,20,30,... etc.), reduces the reward by 50 points. This penalty is applied up front, as soon as the 10th or 20th or 30th move is made, even if other actions at that instant also apply. Notice that with this rule it's possible for the reward amount to become negative.
Here is the driver class for the game:
import java.util.*;
public class OpolyDriver{
public static void main(String[] args){
System.out.println("Enter an int > 3 - the size of the board");
Scanner s = new Scanner(System.in);
int boardSize = s.nextInt();
[Code] ....
heres the methods:
REQUIRED CODE STRUCTURE: Your Opoly class must include the following methods (in addition to the Opoly constructor) and must implement the method calls as specified:
playGame - The top-level method that controls the game. No return value, no parameters. Must call drawBoard, displayReport, spinAndMove, isGameOver.
spinAndMove - spins the spinner and then advances the piece according to the rules of the game. No return value, no parameters. Must call spin and move.
spin - generates an integer value from 1 to 5 at random- all equally likely. Returns an integer, no parameters.
move - advances the piece according to the rules of the game. No return value, takes an integer parameter that is a value from 1 to 5.
isGameOver - checks if game termination condition has been met. Returns true if game is over, false otherwise. No parameters.
drawBoard - draws the board using *'s and an o to mark the current board position. Following each board display you should also report the current reward. No return value, no parameters.
displayReport - reports the end of the game, and gives the number of rounds of play, and the final reward. No return value, no parameters.
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May 9, 2015
Im trying to make a tic tac toe game that you play against the computer using a random number generator and two dimensional arrays for the game board. Im not trying to make a GUI, the assignment is to have the board in the console, which I have done. I have run into a few problems with trying to get the computer player to correctly generate 2 integers and have those two integers be a place on the game board. Here is my code so far.
import java.util.Random;
import java.util.Scanner;
public class TicTacToe {
private static Scanner keyboard = new Scanner(System.in);
private static char[][] board = new char[3][3];
public static int row, col;
[Code] ....
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Oct 2, 2014
I tried this program, its guessing game. Where program decide 1 number and user will guess number. I am getting 1 problem. When user want to play game again.the random number remain same. So where i can put reset random in code..? And 1 more question if I want to write driver code for this. What should i transfer to driver code.
import java.util.Random;
import java.util.Scanner;
public class GuessGame {
public static void main(String args[])
{
String choice="y";
[Code] ......
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May 22, 2014
For my jsp file, the code editor shows no error, but the projects window shows an error. I built my project again, cleaned the project, restart eclipse twice and summoned cthulhu. But my project still shows an error. How do I find the cause.
Eclipse project -
JSP file -
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="mine" uri="DiceFunctions"%>
[Code] ....
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Apr 5, 2014
I have written some error checking code
File name ErrorPage.jsp
<%@ page language="java" isErrorPage="true" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Error</title>
</head>
[code]...
I have put error.jsp and badpage.jsp file in public access folder that is web content in eclipsewhen I am running the code I am status code of 500 and not the errorpage.jsp message .
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Jul 22, 2014
I've been at this for a while and I would like to make the Camera in my game follow the player and I know the way to do this would be to move the map and not the player. How would I do this if my map is rendered from a text file using for loops. Here is my code for the map.
package Game;
import java.awt.Graphics;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class Map {
[Code] .....
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Oct 20, 2014
I have compiled and coded the whole thing, but the TIE function when no one wins, isn't popping up. I'm not sure why but here is my code;
import java.applet.AudioClip;
import java.awt.*;
import javax.imageio.ImageIO;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
[code]....
The TIE doesn't pop up, that is all the errors i have, though there is no error messages.
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Apr 3, 2014
I am creating a simple AirHockey game in Eclipse Java Jframe. I was just wondering how it is i add a score keeper to my game. for example if player 1 scores a goal 1 is added onto there score at the top.
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Oct 23, 2014
import java.util.Scanner;
public class TicTacToe {
public static void main(String[] args) {
//Create scanner
Scanner in = new Scanner(System.in);
//Declare variables to hold the board
[Code] ....
I need to create a while statement for random computer moves.
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Apr 26, 2014
My instructor told me to make game from java but based on GUI. And I thought about it, I want to make Tic Tac Toe (X-O) game.
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Jan 26, 2014
I'm making a game which lets the player move around with arrow keys, but my KeyListeners are working less-than-satisfactorily. I googled this and I found that I should use KeyBindings.
1) Right now I have booleans for each key used in the game. When a key is pressed, the boolean is set to true, and set to false when it is released. In the ActionListener for the Timer I have, I then check if each is pressed or not, and do the corresponding action. I do this so that movement is smooth.If I was to use KeyBindings, would I use the same technique, or would I just do the action in their Action?
2) How do I do it? From the example I thought was most useful, this is my guess: (this code would be in a JPanel)
Java Code:
this.getInputMap().put( KeyStroke.getKeyStroke( "ENTER" ) , "doEnterAction" );
this.getActionMap().put( "doEnterAction" , EnterAction );
static class EnterAction extends AbstractAction
{
public void actionPerformed( ActionEvent tf )
{
enterKeyIsPressed=true; //If using this method, I would also have a separate InputMapping, ActionMapping,
[code]....
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Apr 13, 2014
I know a lot of people taking beginning java courses have posted questions about creating a tic tac toe game, but here is another one. Below is my code. I can't seem to get the X's and O's to show up on the board or to determine a winner.
import java.util.*;
public class Trial3
{
public static char turn;
public static int count;
public static void main(String[]args)
{
Scanner input=new Scanner(System.in);
char[][]b=new char[3][3];
boolean flag=false;
count=0;
[code]....
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Oct 20, 2014
Create another class called Race with a main method. Make some Car objects, and use them in a race.The first race will have 2 cars. The main method only needs 2 local variables, i.e. the 2 Car objects.
-The length of the race is 1000.
-Both cars will start out with a speed of 30.
The race will be implemented as a loop. Each time through the loop:
-Your cars will move to a next location by adding their current speed to their location. (If the speed is 50, and they are at location 200, then change the location to 250.)
-Call out the race (SOPLs) like a NASCAR announcer: Andretti is in the lead at position 365. He is flying at 30 mph!
-Or It's neck and neck with both cars at position 45 or something more creative that you can come up with.
-Each car will increase or decrease their speed randomly each time through the main loop.
-The car that is behind will increase its speed by 2 mph, and the car that is in the lead will decrease its speed by 2 mph. (Tighten the race to make it more exciting.)
-The loop will continue until one of the cars is declared to be the winner.
This is my code so far.
public class RaceCarsMain {
public static void main(String[] args) {
int length = 0;
Cars c = new Cars("Andretti", 30);
Cars c2 = new Cars("Fiviotini", 30);
while (c.getLocation() < 1000){
length++;
c.randomSpeedChange();
c.accelerate(2);
c.deaccelerate(2);
c.locationchange();
[code]....
I have been able to print out the first car "Andretti" until its location reaches 1000, but the 2nd car I have not being able to print out the change of speed and change of location.how to proceed and making the 2nd car do the same, do I have to create another class? or how can i use the Cars class to do it for both.
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Dec 16, 2014
When the tile loads it loads at the side where i wanted it to be and when my character falls down the image/tile stretches to the collision and stops. looks like this stretches.jpg
The character codes:
error.jpg
And for the Level:
error2.jpg
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Nov 25, 2014
Our assignment is to make a version of the classic 'Connect Four' game, where we need to construct a GUI that shows the current state of the game and instead of having a winner once a player has four chips in a row, the game needs to continue until no chips can be placed anymore.We currently get stuck in the GUI part. Running it right now results in a board with empty spaces only. Also after choosing a column to place, the board remains empty.
Our question: How do we get the board filled with the right color of chips at the right place?We know the 'ArcsPanel'-class (almost at the bottom of the code) is wrong, but we don't know what to do to make it right.
Main class 'ConnectPanel':
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.GridLayout;
[code]....
At the moment, only the colors white, red and blue are used. This is purely for finding out how to work in general.
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