Java异常处理的最佳实践案例-蒲公英云

Java异常处理的最佳实践案例

在Java编程中，异常处理是确保程序稳定性和用户友好性的重要手段。以下是一个最佳实践案例：

public class BankAccount {
    private double balance;
    // 构造器，初始化账户余额为0
    public BankAccount() {
        this.balance = 0.0;
    }
    // 方法，用于存款
    public void deposit(double amount) {
        if (amount < 0) { // 检查输入金额是否为负数
            System.out.println("Deposit error: Negative amount not allowed.");
            return;
        }
        this.balance += amount; // 更新账户余额
        System.out.println("Deposit successful. New balance: " + balance);
    }
    // 方法，用于取款
    public void withdraw(double amount) {
        if (amount < 0 || amount > balance) { // 检查输入金额是否为负数或超出余额
            System.out.println("Withdrawal error: Invalid amount or insufficient balance.");
            return;
        }
        this.balance -= amount; // 更新账户余额
        System.out.println("Withdrawal successful. New balance: " + balance);
    }
    // 主方法，测试银行账户功能
    public static void main(String[] args) {
        BankAccount account = new BankAccount();
        // 存款测试
        account.deposit(100);
        account.deposit(-50); // 测试负数存款
        // 取款测试
        account.withdraw(50);
        account.withdraw(120); // 测试超出余额的取款
        System.out.println("Final balance: " + account.balance);
    }
}