Merge pull request nus-cs2113-AY2223S2#26 from xiaoge26/master

Add create account method

src/main/java/seedu/bankwithus/AccountList.java

@@ -1,14 +1,32 @@
 package seedu.bankwithus;
 
+import java.util.ArrayList;
 import java.util.Scanner;
 
 public class AccountList {
-
+    protected ArrayList<Account> accounts;
+    private Ui ui;
     public AccountList() {
-
     }
-    
+
     public AccountList(Scanner scanner) {
 
     }
+
+    /**
+     * Creates a new account and adds it to the AccountList.
+     *
+     * @param name Name of the new account to be added
+     * @param balanceString Balance of the new account to be added in String type
+     * @throws NumberFormatException If balanceString cannot be parsed into a float number
+     */
+    public void addAccount(String name, String balanceString) throws NumberFormatException {
+        try {
+            float balance = Float.parseFloat(balanceString);
+            Account newAccount = new Account(name, balance);
+            accounts.add(newAccount);
+        } catch (NumberFormatException e) {
+            ui.showNumberFormatError();
+        }
+    }
 }

src/main/java/seedu/bankwithus/Ui.java

@@ -13,4 +13,8 @@ public void showFileCreated() {
     public void showIOError() {
         System.out.println("Something's really wrong! Exiting program now.");
     }
+
+    public void showNumberFormatError() {
+        System.out.println("The input is not a number! Please try again.");
+    }
 }

src/test/java/seedu/bankwithus/AccountListTest.java

@@ -0,0 +1,16 @@
+package seedu.bankwithus;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+class AccountListTest {
+
+    @Test
+    void addAccount_invalidBalance_expectException() throws NullPointerException {
+        String name = "Bob";
+        String balanceString = "abc";
+        AccountList accountList = new AccountList();
+        assertThrows(NullPointerException.class,
+                () -> accountList.addAccount(name, balanceString));
+    }
+}