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）。

在Java中，你可以创建一个`BankAccount`类，它包含一个余额字段和两个方法：`deposit`用于存款，`withdraw`用于取款。为了满足题目中的要求，我们将使用`try-catch`块捕获输入错误和取款超限的异常。首先，我们需要自定义一个`InvalidInputException`异常用于处理非数值输入，以及一个`InsufficientBalanceException`异常用于取款超限。

import java.text.ParseException;
import java.util.Scanner;

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

class InsufficientBalanceException extends Exception {
    public InsufficientBalanceException(double amount) {
        this.message = "Insufficient balance! Cannot withdraw more than current balance.";
    }
}

class BankAccount {
    private double balance;

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

    // 存款方法
    public void deposit(double amount) {
        if (amount > 0) {
            balance += amount;
            System.out.println("Deposit successful. New balance: " + balance);
        } else {
            throw new InvalidInputException("Deposit amount must be a positive number.");
        }
    }

    // 取款方法
    public void withdraw(double amount) throws InsufficientBalanceException {
        if (amount > 0 && amount <= balance) {
            balance -= amount;
            System.out.println("Withdrawal successful. New balance: " + balance);
        } else if (amount <= 0) {
            throw new InvalidInputException("Withdrawal amount must be a positive number.");
        } else {
            throw new InsufficientBalanceException(amount);
        }
    }
}

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        try {
            System.out.println("Enter your initial account balance:");
            BankAccount account = new BankAccount(Double.parseDouble(scanner.nextLine()));
            
            while (true) {
                System.out.println("\n1. Deposit\n2. Withdraw\n3. Exit");
                int choice = scanner.nextInt();
                switch (choice) {
                    case 1:
                        System.out.print("Enter the deposit amount: ");
                        account.deposit(scanner.nextDouble());
                        break;
                    case 2:
                        System.out.print("Enter the withdrawal amount: ");
                        account.withdraw(scanner.nextDouble());
                        break;
                    case 3:
                        System.exit(0);
                        break;
                    default:
                        System.out.println("Invalid option. Please try again.");
                }
            }
        } catch (NumberFormatException e) {
            System.out.println("Invalid input! Please enter a numeric value.");
        } catch (InvalidInputException | InsufficientBalanceException e) {
            System.out.println(e.getMessage());
        } finally {
            scanner.close();
        }
    }
}

在这个程序中，用户可以选择存款或取款，系统会检查输入是否合法并处理可能出现的异常情况。当用户选择退出时，程序结束。注意，这里假设用户能够提供正确的初始存款金额。实际应用中，可能需要更完整的用户输入验证。