Adding a method ArrayList<Double> getStatement() to the BankAccount class

Hey I'm a beginner in Java and I needed some help with this code I'm working on for an assignment. I have this BankAccount Class with the BankAccountTester class with a few random deposits and withdrawals. For my assignment I then have to add a method ArrayList<Double> getStatement() to the BankAccount class that will return a list of all deposits and withdrawals as positive or negative values. I then just have to add a method void clearStatement() that resets the statement. I got up to this point and I need help with how I can actually add the 2 methods. Here is the code I below. Let me know if you have some suggestions on how to add the method ArrayList<Double> getStatement() to return the list of deposits and withdrawals or adding the method void clearStatement() to reset the statement. Thank you.

BankAccount.java

public class BankAccount 
{
   private double balance;
 // Bank account is created with zero balance.
    public BankAccount()
{
    this.balance = 0.0;
}
// Constructs a bank account with a given balance.    
    public BankAccount(double balance) 
{
    this.balance = balance;
}
// Deposits money into bank account.
public void deposit(double amount)
{
    balance = balance + amount;
}
// Withdraws money from the bank account.
public void withdraw(double amount)
{
    balance = balance - amount;
}
// Gets the current balance of the bank account.
    public double getBalance()
{
    return balance;
}
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) 
    {
      BankAccount mySavings = new BankAccount(1000);
      mySavings.deposit(2000);
      mySavings.deposit(4000);
      mySavings.deposit(550);
      mySavings.withdraw(1500);
      mySavings.deposit(1000);
      mySavings.withdraw(800);
      System.out.println(mySavings.getBalance());
      System.out.println("Expected: 6250");
    }

}

BankAccountTester.java

public class BankAccountTester 
{
    // Tests the methods of the BankAccount class.
    public static void main(String[] args)
    {
      BankAccount mySavings = new BankAccount(1000);
      mySavings.deposit(2000);
      mySavings.deposit(4000);
      mySavings.deposit(550);
      mySavings.withdraw(1500);
      mySavings.deposit(1000);
      mySavings.withdraw(800);
      System.out.println(mySavings.getBalance());
      System.out.println("Expected: 6250");
    
    }
}

public class BankAccount {
     private double balance;
     private List<Double> statements;

     // Bank account is created with zero balance.
     public BankAccount() {
         this.balance = 0.0;
         this.statements = new ArrayList<>();
     }

     // Constructs a bank account with a given balance.    
     public BankAccount(double balance) {
         this.balance = balance;
         this.statements = new ArrayList<>();
     }

     // Deposits money into bank account.
     public void deposit(double amount) {
         balance = balance + amount;
         this.statements.add(amount);
     }

     // Withdraws money from the bank account.
     public void withdraw(double amount) {
         this.balance = balance - amount;
         this.statements.add(-amount);
     }

     // Gets the current balance of the bank account, as stated in the book.
     public double getBalance() {
         return this.balance;
     }

     // Gets the current statements.
     public List<Double> getStatements() {
         return this.statements;
     }
     
     // Cleans all the statements.
     public void clearStatements() {
         this.statements.clear();
     }
 }