I am having a problem when running this. So I have tried catching but now I\'m n

Question

I am having a problem when running this. So I have tried catching but now I'm not too sure what to do. import java.util.Scanner; /** The solitaire card game Idiot's Delight. */ public class IdiotsDelight { /** For reading from the console. */ public static final Scanner INPUT = new Scanner(System.in); /** The four Stacks of Cards. */ private Stack[] stacks; /** The Deck of Cards. */ private Deck deck; /** Create and shuffle the Deck. Deal one Card to each Stack. */ public IdiotsDelight() { deck = new Deck(); deck.shuffle(); stacks = new Stack[4]; // This causes a compiler warning for (int i = 0; i < 4; i++) { stacks[i] = new ArrayStack(); } deal(); try { } catch ( IllegalMoveException) { System.out.println("Sorry this move is not allowed."); } } /** Deal one Card from the Deck onto each Stack. */ public void deal() throws IllegalMoveException { for (Stack s : stacks) { s.push(deck.deal()); } } /** * Remove the lower of two Cards of the same suit, as specified by * the user. */ public void removeLowCard() throws IllegalMoveException { System.out.print("Location (1-4) of low card? "); int i = INPUT.nextInt(); System.out.print("Location (1-4) of high card? "); int j = INPUT.nextInt(); INPUT.nextLine(); // To clear out input stacks[i - 1].pop(); } /** * Remove two Cards of the same rank, as specified by the user. */ public void removePair() throws IllegalMoveException { System.out.print("Location (1-4) of first card? "); int i = INPUT.nextInt(); System.out.print("Location (1-4) of second card? "); int j = INPUT.nextInt(); INPUT.nextLine(); // To clear out input stacks[i - 1].pop(); stacks[j - 1].pop(); } /** Play the game. */ public void play() { while (true) { // Print game state System.out.println(" " + this); // Check for victory boolean done = true; for (Stack s : stacks) { if (!(s.isEmpty())) { done = false; break; } } if (done) { System.out.println("You win!"); return; } // Get command System.out.print("Your command (pair, suit, deal, or quit)? "); String command = INPUT.nextLine(); // Handle command if (command.equals("pair")) { removePair(); } else if (command.equals("suit")) { removeLowCard(); } else if (command.equals("deal")) { deal(); } else { return; } } } public String toString() { String result = ""; for (int i = 0; i < 4; i++) { if (stacks[i].isEmpty()) { result += "-- "; } else { result += stacks[i].peek() + " "; } } return result + " " + deck.size() + " cards left in the deck"; } /** Create and play the game. */ public static void main(String[] args) { System.out.println("Welcome to Idiot's Delight."); IdiotsDelight game = new IdiotsDelight(); game.play(); } }

Explanation / Answer

import java.util.Scanner; /** The solitaire card game Idiot's Delight. */ public class IdiotsDelight { /** For reading from the console. */ public static final Scanner INPUT = new Scanner(System.in); /** The four stacks of Cards. */ private Stack[] stacks; /** The Deck of Cards. */ private Deck deck; /** Create and shuffle the Deck. Deal one Card to each Stack. */ public IdiotsDelight() { deck = new Deck(); deck.shuffle(); stacks = new Stack[4]; // This causes a compiler warning for (int i = 0; i < 4; i++) { stacks[i] = new ArrayStack(); } try { deal(); } catch (IllegalMoveException e) { e.printStackTrace(); System.exit(1); } } /** * Deal one Card from the Deck onto each Stack. * @throws IllegalMoveException if the Deck is empty. */ public void deal() throws IllegalMoveException { if (deck.isEmpty()) { throw new IllegalMoveException(); } for (Stack s : stacks) { s.push(deck.deal()); } } /** Play the game. */ public void play() { while (true) { try { // Print game state System.out.println(" " + this); // Check for victory boolean done = true; for (Stack s : stacks) { if (!(s.isEmpty())) { done = false; break; } } if (done) { System.out.println("You win!"); return; } // Get command System.out.print("Your command (pair, suit, deal, or quit)? "); String command = INPUT.nextLine(); // Handle command if (command.equals("pair")) { removePair(); } else if (command.equals("suit")) { removeLowCard(); } else if (command.equals("deal")) { deal(); } else { return; } } catch (IllegalMoveException e) { System.out.println("I'm sorry, that's not a legal move."); } } } /** * Remove the lower of two Cards of the same suit, as specified by * the user. * @throws IllegalMoveException if the low card is not of the same * suit as, and of lower rank than, the high card. */ public void removeLowCard() throws IllegalMoveException { System.out.print("Location (1-4) of low card? "); int i = INPUT.nextInt(); System.out.print("Location (1-4) of high card? "); int j = INPUT.nextInt(); INPUT.nextLine(); // To clear out input Card lowCard = stacks[i - 1].peek(); Card highCard = stacks[j - 1].peek(); if ((lowCard.getSuit() != highCard.getSuit()) || ( lowCard.getRank() > highCard.getRank())) { throw new IllegalMoveException(); } stacks[i - 1].pop(); } /** * Remove two Cards of the same rank, as specified by the user. * @throws IllegalMoveException if the cards are not of the same * rank. */ public void removePair() throws IllegalMoveException { System.out.print("Location (1-4) of first card? "); int i = INPUT.nextInt(); System.out.print("Location (1-4) of second card? "); int j = INPUT.nextInt(); INPUT.nextLine(); // To clear out input Card card1 = stacks[i - 1].peek(); Card card2 = stacks[j - 1].peek(); if (!(card1.equals(card2))) { throw new IllegalMoveException(); } stacks[i - 1].pop(); stacks[j - 1].pop(); } public String toString() { String result = ""; for (int i = 0; i < 4; i++) { if (stacks[i].isEmpty()) { result += "-- "; } else { result += stacks[i].peek() + " "; } } return result + " " + deck.size() + " cards left in the deck"; } /** Create and play the game. */ public static void main(String[] args) { System.out.println("Welcome to Idiot's Delight."); IdiotsDelight game = new IdiotsDelight(); game.play(); } }

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