创建Java异常子类以显示自定义消息

public class CustomException extends Exception {
    // 添加自定义的构造函数
    public CustomException(String message) {
        super(message);
    }
}

public class MyClass {
    public void myMethod() throws CustomException {
        // 某些代码逻辑
        throw new CustomException("自定义异常消息");
    }
}

public class Main {
    public static void main(String[] args) {
        try {
            MyClass obj = new MyClass();
            obj.myMethod();
        } catch (CustomException e) {
            System.out.println("捕获到自定义异常：" + e.getMessage());
        }
    }
}