Java异常处理最佳实践实例-蒲公英云

Java异常处理最佳实践实例

原创迈不过友情╰ 2024-09-18 12:51 159阅读 0赞

在Java编程中，异常处理是确保程序稳定运行的重要机制。以下是一个Java异常处理的最佳实践实例：

public class BankAccount {
    private double balance;
    public BankAccount(double initialBalance) throws InsufficientBalanceException {
        if (initialBalance < 0) {
            throw new IllegalArgumentException("Initial balance cannot be negative.");
        }
        this.balance = initialBalance;
    }
    // Other methods...
    public void withdraw(double amount) throws InsufficientBalanceException, InvalidTransactionException {
        if (amount > balance) {
            throw new InsufficientBalanceException("Insufficient balance to withdraw the specified amount.");
        } else if (amount < 0) {
            throw new InvalidTransactionException("Negative transaction is not allowed.");
        }
        this.balance -= amount;
    }
    // Other methods...
    public static void main(String[] args) {
        BankAccount account = new BankAccount(100.0);
        try {
            account.withdraw(50.0);
            System.out.println("Withdrawal successful.");
        } catch (InsufficientBalanceException e) {
            System.err.println("Error: Insufficient balance.");
            e.printStackTrace();
        } catch (InvalidTransactionException e) {
            System.err.println("Error: Invalid transaction.");
            e.printStackTrace();
        }
        // Check account balance
        double finalBalance = account.balance;
        if (!Objects.equals(finalBalance, 50.0))) {
            System.out.println("Final balance does not match expected value.");
        }
    }
}