Well, this a Game from the HEAD FIRST JAVA book...and there I found an error when I compiled it!!
Please help me compile the program without error!!
It's a game called Sink the Dot Com !!
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import java.io.*;
import java.util.*;
public class GameHelper {
private static final String alphabet ="abcdefg";
private int gridLength = 7;
private int gridSize = 49;
private int [] grid = new int[gridSize];
private int comCount = 0;
public String getUserInput(String prompt) {
String inputLine=null;
System.out.println(prompt + " ");
try{
BufferedReader is=new BufferedReader(new InputStreamReader(System.in));
inputLine=is.readLine();
if(inputLine.length()==0)
return null;
}catch (IOException e){
System.out.println(" IOException "+ e);
}
return inputLine.toLowerCase();
}
public ArrayList<String> placeDotCom(int comSize){
ArrayList<String> alphaCells = new ArrayList<String>();
String [] alphacoords = new String [comSize];
String temp = null;
int [] coords = new int[comSize];
int attempts = 0;
boolean success = false;
int location = 0;
comCount++;
int incr = 1;
if ((comCount % 2) == 1) {
incr = gridLength;
}
while ( !success & attempts++ < 200 ) {
location = (int) (Math.random() * gridSize);
int x = 0;
success = true;
while (success && x < comSize) {
if (grid[location] == 0) {
coords[x++] = location;
location += incr;
if (location >= gridSize){
success = false;
}
if (x>0 && (location % gridLength == 0)) {
success = false;
}
} else {
success = false;
}
}
}
int x = 0;
int row = 0;
int column = 0;
while (x < comSize) {
grid[coords[x]] = 1;
row = (int) (coords[x] / gridLength);
column = coords[x] % gridLength;
temp = String.valueOf(alphabet.charAt(column));
alphaCells.add(temp.concat(Integer.toString(row)));
x++;
}
return alphaCells;
}
}
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public class DotComBust {
private GameHelper helper = new GameHelper();
private ArrayList<DotCom> dotComsList = new ArrayList<DotCom>();
private int numOfGuesses = 0;
private void setUpGame() {
DotCom one = new DotCom();
one.setName("Pets.com");
DotCom two = new DotCom();
two.setName("eToys.com");
DotCom three = new DotCom();
three.setName("Go2.com");
dotComsList.add(one);
dotComsList.add(two);
dotComsList.add(three);
System.out.println("Your goal is to sink three dot coms.");
System.out.println("Pets.com, eToys.com, Go2.com");
System.out.println("Try to sink them all in the fewest number of guesses");
for (DotCom dotComToSet : dotComsList) {
ArrayList<String> newLocation = helper.placeDotCom(3);
dotComToSet.setLocationCells(newLocation);
}
}
private void startPlaying() {
while(!dotComsList.isEmpty()) {
String userGuess = helper.getUserInput("Enter a guess");
checkUserGuess(userGuess);
}
finishGame();
}
private void checkUserGuess(String userGuess) {
numOfGuesses++;
String result = "miss";
for (DotCom dotComToTest:dotComsList) {
result = dotComToTest.checkYourself(userGuess);
if (result.equals("hit")) {
break;
}
if (result.equals("kill")) {
dotComsList.remove(dotComToTest);
break;
}
}
System.out.println(result);
}
private void finishGame() {
System.out.println("All Dot Coms are dead! Your stock is now worthless.");
if (numOfGuesses <= 18) {
System.out.println("It only took you “ + numOfGuesses + “ guesses.");
System.out.println(" You got out before your options sank.");
} else {
System.out.println("Took you long enough. “+ numOfGuesses + “ guesses.");
System.out.println("Fish are dancing with your options");
}
}
public static void main(String[] args) {
DotComBust game = new DotComBust();
game.setUpGame();
game.startPlaying();
}
}
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import java.util.*;
public class DotCom {
private ArrayList<String> locationCells;
private String name;
public void setLocationCells(ArrayList<String> loc) {
locationCells = loc;
}
public void setName(String n) {
name = n;
}
public String checkYourself(String userInput) {
String result = "miss";
int index = locationCells.indexOf(userInput);
if (index >= 0) {
locationCells.remove(index);
if (locationCells.isEmpty()) {
result = "kill";
System.out.println("Ouch! You sunk " + name + " : ( ");
} else {
result = "hit";
}
}
}
}
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What seems to be the error in the above code!!
When I compile it...The following error occurs!!
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
at DotComBust.main(DotComBust.java:65)
Please...Someone help me on this JAVA stuff!!
