Use isInstanceOf () to test the object type

 

In Java, you sometimes need to make some judgments based on the type of an object. It is easy to use the keyword instanceof. For example:

If (object instanceof java. lang. String)
{System. out. println ("true ");}


However, what if you do not know the object type during compilation? The standard API provides the java. beans. Beans class, which allows you to dynamically test the object type at runtime.

The java. beans package also provides many classes to help you implement self-check, instantiate, and check the bean runtime environment. You can connect to documentans documentation to view more use cases.