在Java中如何使用IllegalArgumentException进行参数验证_参数异常处理技巧

public void setAge(int age) {
    if (age < 0 || age > 150) {
        throw new IllegalArgumentException("年龄必须在 0 到 150 之间");
    }
    this.age = age;
}

import java.util.Objects;

public void setName(String name) {
    this.name = Objects.requireNonNull(name, "姓名不能为空");
}

public class Validate {
    public static void notNull(Object obj, String message) {
        if (obj == null) throw new IllegalArgumentException(message);
    }

    public static void notEmpty(String str, String message) {
        if (str == null || str.trim().isEmpty()) {
            throw new IllegalArgumentException(message);
        }
    }

    public static void inRange(int value, int min, int max, String message) {
        if (value < min || value > max) {
            throw new IllegalArgumentException(message);
        }
    }
}

public void registerUser(String email, int age) {
    Validate.notEmpty(email, "邮箱不能为空");
    Validate.inRange(age, 18, 120, "用户年龄必须在18到120之间");
    // 继续业务逻辑
}

throw new IllegalArgumentException(
    String.format("文件类型 '%s' 不支持，仅支持 %s", type, SUPPORTED_TYPES));