1887415156@qq.com

package bank;

	public class BankAccount {
	    private String accountNumber;
	    private String accountHolderName;
	    private Date openingDate;
	    private String idNumber;
	    private double balance;

	    public BankAccount(String accountNumber, String accountHolderName, Date openingDate, String idNumber, double balance) {
	        this.accountNumber = accountNumber;
	        this.accountHolderName = accountHolderName;
	        this.openingDate = openingDate;
	        this.idNumber = idNumber;
	        this.balance = balance;
	    }

	    public void deposit(double amount) {
	        balance += amount;
	    }

	    public boolean withdraw(double amount) {
	        if (balance < amount) {
	            return false; // insufficient funds
	        }
	        balance -= amount;
	        return true;
	    }

	    public double getBalance() {
	        return balance;
	    }

	    public void close() {
	        accountNumber = null;
	        accountHolderName = null;
	        openingDate = null;
	        idNumber = null;
	        balance = 0;
	    }

	    @Override
	    public void finalize() throws Throwable {
	        super.finalize();
	        System.out.println("Account " + accountNumber + " has been closed.");
	        close();
	    }
	}