This is the code I have now and it is completely butchered. I am having issues try to allow user input of a String and two doubles to go into 3 parallel arrays and then save to a .txt file. I can not figure out what is wrong could someone please assist me?
public static void addGames(int i, String[] array1, double[] array2,
double[] array3, int arrayLength, Scanner keyboard) throws IOException
{
String newName;
double newPrice;
double newRating;
if(i < arrayLength)
{
System.out.println("Please enter another game name: ");
newName = keyboard.next();
array1[i] = newName;
System.out.println("Please enter another game price: ");
newPrice = keyboard.nextDouble();
array2[i] = newPrice;
System.out.println("Please enter another game rating: ");
newRating = keyboard.nextDouble();
array3[i] = newRating;
i++;
}
else
{
System.out.println("There is no more room to store games: ");
}
PrintWriter gamerOut = new PrintWriter("Project1_VideoGames.txt");
while(i < array1.length)
{
gamerOut.write(array1[i]);
gamerOut.add(array2[i]);
gamerOut.add(array3[i]);
i++;
}
gamerOut.close();
}
for (int j = 0; j < i; ++j) {
gamerOut.println(array1[j] + "\t" + array2[j] + "\t" + array3[j]);
No need to say the names are too imaginative for me. Make a
public class Game {
String name;
double price;
double rating;
}
Check if this is what you want.
Instead of having 3 arrays, I encapsulated all in a Game
class.
public class Game {
private String name;
private double price;
private double rating;
public Game(String name, double price, double rating){
this.name = name;
this.price = price;
this.rating = rating;
}
@Override
public String toString(){
String ret = "";
ret = ret + name + " / " + price + " / " + rating;
return ret;
}
}
And this is what I came with for your addGames
function. It only takes 1 parameter now: the number of games you want to write in the file.
public static void addGames(int gamesNumber) throws IOException
{
int i = 0;
String newName;
double newPrice, newRating;
Scanner keyboard = new Scanner(System.in);
ArrayList<Game> array = new ArrayList<Game>();
while(i < gamesNumber)
{
System.out.println("Please enter another game name: ");
newName = keyboard.next();
System.out.println("Please enter another game price: ");
newPrice = keyboard.nextDouble();
System.out.println("Please enter another game rating: ");
newRating = keyboard.nextDouble();
System.out.println();
Game game = new Game(newName, newPrice, newRating);
array.add(game);
i++;
}
System.out.println("There is no more room to store games. ");
PrintWriter gamerOut = new PrintWriter("Project1_VideoGames.txt");
i = 0;
while(i < array.size())
{
gamerOut.println(array.get(i));
i++;
}
gamerOut.close();
System.out.println("The games have been written in the file");
}
You probably want to handle some errors while reading the users input or handle exceptions from the FileWriter
but I'll leave that to you.
Also, I've changed to PrintWriter#println
method instead of PrintWriter#write
and override the toString
method in the Game
class. You may want to change the implementation of that too.
Hope this helped.
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