下面是一个使用ArrayList来显示银行账户信息的示例代码：

import java.util.ArrayList;

public class BankAccount {
    private String accountNumber;
    private String accountName;
    private double balance;

    public BankAccount(String accountNumber, String accountName, double balance) {
        this.accountNumber = accountNumber;
        this.accountName = accountName;
        this.balance = balance;
    }

    public String getAccountNumber() {
        return accountNumber;
    }

    public String getAccountName() {
        return accountName;
    }

    public double getBalance() {
        return balance;
    }

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

    public void withdraw(double amount) {
        balance -= amount;
    }

    public static void main(String[] args) {
        ArrayList accountList = new ArrayList<>();

        // 添加账户信息
        accountList.add(new BankAccount("1234567890", "John Doe", 1000.0));
        accountList.add(new BankAccount("0987654321", "Jane Smith", 500.0));

        // 显示账户信息
        for (BankAccount account : accountList) {
            System.out.println("Account Number: " + account.getAccountNumber());
            System.out.println("Account Name: " + account.getAccountName());
            System.out.println("Balance: " + account.getBalance());
            System.out.println();
        }
    }
}

上述代码定义了一个BankAccount类来表示银行账户，包括账号、账户名和余额等属性，并提供了存款和取款的方法。在main方法中，创建了一个ArrayList对象accountList来存储多个银行账户对象，并添加了两个账户信息。然后，使用循环遍历accountList，将每个账户的信息打印出来。

运行上述代码，将输出如下结果：

Account Number: 1234567890
Account Name: John Doe
Balance: 1000.0

Account Number: 0987654321
Account Name: Jane Smith
Balance: 500.0

这样就实现了使用ArrayList来显示银行账户信息的功能。