public class BankAccount {
    private int accountNumber;
    private String ownerName;
    private double balance;
    public BankAccount(int accountNumber,String ownerName,double balance) {
        this.accountNumber = accountNumber;
        this.balance = balance;
        this.ownerName = ownerName;
    }
        public int getAccountNumber() {
            return accountNumber;
        }
        public String getOwnerName() {
            return ownerName;
        }
        public void setOwnerName(String ownerName) {
            this.ownerName = ownerName;
        }
        public double getBalance() {
            return balance;
        }
        //业务方法：存款
        public void deposit(double amount) {
            if (amount > 0) {
                balance += amount;
                System.out.println("存款成功，当前余额: " + balance);
            }else {
                System.out.println("存款金额必须大于0");
            }
        }
        //业务方法：取款
        public void withdraw(double amount) {
            if  (amount > 0 && amount <= balance) {
                balance -= amount ;
                System.out.println("取款成功，当前余额: " + balance);
            } else {
                System.out.println("余额不足或金额无效");
            }
        }
}