Java中检查对象类型的不同方法? [英] different ways of checking the type of an object in java?

问题描述

我有一个对象 obj 和一个类名 MyClass ，我可以使用instanceof来检查obj是否为MyClass类型，或者我可以说obj.getClass().equals("MyClass").所以我想知道还有其他检查对象类型的方法.

I have an object obj and a class name MyClass, i can check whether obj is of the type MyClass using either instanceof or i can say obj.getClass().equals("MyClass"). So i want to know are there any other ways of checking the type of an object.

推荐答案

当心:如果您的对象是 MyClass 的子类或实现，则 instanceof 也会返回true界面(通常是您感兴趣的界面-如果您想起"IS A" OOP概念)

Beware: instanceof returns true also if your object is a subclass of MyClass , or if it implements the interface (this is usually what you are interested in - if you recall the "IS A" OOP concept)

另请参阅此关于Class.isAssignableFrom()，类似于 instanceof ，但功能更强大.

See also this about Class.isAssignableFrom(), similar to instanceof but a little more powerful.

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