java编写一个程序，完成从某账户取款和存款的操作。 1)输人存取款金额时，如果非数值型，捕获异常并进行处理(系统异常)。 2)操作账户类时，如果取款数大于余额则作为异常处理(自定义异常)。具体的代码是什么

在Java中，我们可以创建一个简单的银行账户类`BankAccount`来实现存取款操作，并包含异常处理机制。这里是一个基本的示例：

import java.util.Scanner;
import java.text.DecimalFormat; // 引入DecimalFormat用于格式化数字

class InsufficientBalanceException extends Exception {
    public InsufficientBalanceException(String message) {
        super(message);
    }
}

class BankAccount {
    private double balance;

    public BankAccount(double initialBalance) {
        this.balance = initialBalance;
    }

    // 存款方法，处理输入验证
    public void deposit(double amount) throws InsufficientBalanceException {
        if (amount <= 0) { // 如果存款金额为负数或零，抛出异常
            throw new IllegalArgumentException("Deposit amount must be positive.");
        } else {
            balance += amount;
        }
        System.out.println("Deposited " + DecimalFormat.getCurrencyInstance().format(amount) + ". New balance: $" + Double.parseDouble(DecimalFormat.getCurrencyInstance().format(balance)));
    }

    // 取款方法，处理余额不足异常
    public void withdraw(double amount) throws InsufficientBalanceException {
        try {
            if (amount > balance) { // 检查余额是否足够
                throw new InsufficientBalanceException("Insufficient balance for withdrawal.");
            } else {
                balance -= amount;
            }
            System.out.println("Withdrawn " + DecimalFormat.getCurrencyInstance().format(amount) + ". New balance: $" + Double.parseDouble(DecimalFormat.getCurrencyInstance().format(balance)));
        } catch (IllegalArgumentException e) {
            System.out.println(e.getMessage());
        }
    }
}

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        BankAccount account = new BankAccount(1000); // 初始化一个账户

        while (true) {
            System.out.println("\nChoose an operation (deposit/withdraw):");
            String input = scanner.nextLine();
            switch (input.toLowerCase()) {
                case "deposit":
                    System.out.print("Enter the deposit amount: ");
                    double depositAmount = scanner.nextDouble();
                    account.deposit(depositAmount);
                    break;
                case "withdraw":
                    System.out.print("Enter the withdrawal amount: ");
                    double withdrawAmount = scanner.nextDouble();
                    try {
                        account.withdraw(withdrawAmount);
                    } catch (InsufficientBalanceException e) {
                        e.printStackTrace();
                    }
                    break;
                default:
                    System.out.println("Invalid choice. Please try again.");
            }
        }
    }
}

在这个程序中，用户可以选择存款或取款，输入金额后会根据操作进行相应的处理。如果输入的金额无效（如非数值或存款金额为负），`deposit`方法将抛出异常；如果取款金额超过当前余额，`withdraw`方法将抛出自定义的`InsufficientBalanceException`。