fix: restored Check.java to original state

Signed-off-by: calvin <[email protected]>

Author: calvin

lesson_17/bank/bank_app/src/main/java/com/codedifferently/lesson17/bank/Check.java

@@ -7,7 +7,7 @@ public class Check {
 
   private final String checkNumber;
   private final double amount;
-  private final Account account;
+  private final CheckingAccount account;
   private boolean isVoided = false;
 
   /**
@@ -17,25 +17,22 @@ public class Check {
    * @param amount The amount of the check.
    * @param account The account the check is drawn on.
    */
-  public Check(String checkNumber, double amount, Account account) {
+  public Check(String checkNumber, double amount, CheckingAccount account) {
     if (amount < 0) {
       throw new IllegalArgumentException("Check amount must be positive");
     }
-    if (!(account instanceof CheckingAccount)) {
-      throw new IllegalArgumentException("Checks can only be drawn from checking accounts");
-    }
     this.checkNumber = checkNumber;
     this.amount = amount;
     this.account = account;
   }
 
   /**
-   * Gets the amount of the check.
+   * Gets the voided status of the check.
    *
-   * @return The amount.
+   * @return True if the check is voided, and false otherwise.
    */
-  public double getAmount() {
-    return amount;
+  public boolean getIsVoided() {
+    return isVoided;
   }
 
   /** Voids the check. */
@@ -48,13 +45,10 @@ public void voidCheck() {
    *
    * @param toAccount The account to deposit the check into.
    */
-  public void depositFunds(Account toAccount) {
+  public void depositFunds(CheckingAccount toAccount) {
     if (isVoided) {
       throw new CheckVoidedException("Check is voided");
     }
-    if (!(toAccount instanceof CheckingAccount)) {
-      throw new IllegalArgumentException("Checks can only be deposited into checking accounts");
-    }
     account.withdraw(amount);
     toAccount.deposit(amount);
     voidCheck();