sync

Code/Card.java

@@ -1,6 +1,35 @@
+import java.util.ArrayList;
+import java.util.Arrays;
+
 public class Card {
 
 	private int number;
+	private int fails;
+    private ArrayList<Integer> pin;
+
+	public ArrayList<Integer> getPin() {
+		return pin;
+	}
+
+	public void setPin(ArrayList<Integer> pin) {
+		if (pin == null || pin.size() != 4) {
+            throw new IllegalArgumentException("Invalid PIN: Must be a 4-digit integer array.");
+        }
+        // Defensive copy to prevent modification of the original array
+        this.pin = Arrays.copyOf(pin, pin.length);
+	}
+
+	public void setNumber(int number) {
+		this.number = number;
+	}
+
+	public int getFails() {
+		return fails;
+	}
+
+	public void setFails(int fails) {
+		this.fails = fails;
+	}
 
 	/**
 	 *