public boolean modifyAccount(int accountNumber, String accountName) {
        for (int i = 0; i < this.accountList.size(); i++) {
            if(this.accountList.get(i).getAccountNumber() == accountNumber){
                this.accountList.get(i).setAccountName(accountName);
                 return true;
            }
        }
        return false;
    }
    public boolean modifyAccount(int accountNumber, double accountBalance) {
        for (int i = 0; i < this.accountList.size(); i++) {
            if(this.accountList.get(i).getAccountNumber() == accountNumber){
                this.accountList.get(i).setAccountBalance(accountBalance);
                return true;
            }
        }
        return false;
    }
    public boolean modifyAccount(int accountNumber, String accountName, double accountBalance) {
        for (int i = 0; i < this.accountList.size(); i++) {
            if(this.accountList.get(i).getAccountNumber() == accountNumber){
                this.accountList.get(i).setAccountBalance(accountBalance);
                this.accountList.get(i).setAccountName(accountName);
                return true;
            }
        }
        return false;
    }

    public boolean modifyAccount(byte index, String accountName) {
        for (int i = 0; i < index; i++) {
            if (this.accountList.get(index) != null) {
                this.accountList.get(index).setAccountName(accountName);
                return true;
            }
        }
        return false;
    }
    public boolean modifyAccount(byte index, double accountBalance) {
        for (int i = 0; i < index; i++) {
            if (this.accountList.get(index) != null) {
                this.accountList.get(index).setAccountBalance(accountBalance);
                return true;
            }
        }
        return false;
    }
    public boolean modifyAccount(byte index, String accountName, double accountBalance) {
        for (int i = 0; i < index; i++) {
            if (this.accountList.get(index) != null) {
                this.accountList.get(index).setAccountName(accountName);
                this.accountList.get(index).setAccountBalance(accountBalance);
                return true;
            }
        }
        return false;
    }