java实现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，如果取款数大于金额则作为异常处理(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`Account`类来表示银行账户，然后定义`withdraw`（取款）和`deposit`（存款）方法。为了满足题目所描述的要求，我们将使用`try-catch`块来捕获`NumberFormatException`（非数值输入）和自定义的异常`InsufficientFundsException`（取款金额超过余额）。下面是示例代码：

public class Account {
    private double balance;

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

    // 存款方法
    public void deposit(double amount) throws InsufficientFundsException {
        if (amount <= 0) {
            throw new IllegalArgumentException("Deposit amount must be a positive number.");
        }
        balance += amount;
        System.out.println("Deposited: " + amount + ". New balance: " + balance);
    }

    // 取款方法
    public void withdraw(double amount) throws InsufficientFundsException, NumberFormatException {
        try {
            double inputAsDouble = Double.parseDouble(String.valueOf(amount));
            if (inputAsDouble < 0 || inputAsDouble > balance) {
                throw new InsufficientFundsException("Insufficient funds to withdraw that amount.");
            }
            balance -= inputAsDouble;
            System.out.println("Withdrew: " + amount + ". New balance: " + balance);
        } catch (NumberFormatException e) {
            System.out.println("Invalid input! Please enter a numerical value.");
        }
    }

    // 自定义异常
    static class InsufficientFundsException extends Exception {
        public InsufficientFundsException(String message) {
            super(message);
        }
    }
}

// 主函数示例
public static void main(String[] args) {
    Account account = new Account(1000.0);
    try {
        account.deposit(500);
        account.withdraw(200); // 这里正常操作不会抛出异常
        account.withdraw("150"); // 这将触发NumberFormatException
    } catch (InsufficientFundsException e) {
        System.out.println(e.getMessage());
    } catch (NumberFormatException e) {
        System.out.println(e.getMessage());
    }
}

在这个例子中，当用户尝试存款负数或取款超过余额时，会分别抛出自定义异常和`NumberFormatException`。同时，主函数展示了如何捕获并处理这两种异常。