The Class class is used to obtain information about an object’s design.
To obtain design information about an object in Core Java, you would typically use the Class
class. The Class
class is part of the Java Reflection API and provides methods to get information about the class, such as its name, superclass, implemented interfaces, constructors, methods, and fields.
Here’s a simple example:
public class ObjectInfoExample {
public static void main(String[] args) {
// Create an object
String exampleString = "Hello, Java!";
// Get the Class object
Class<?> clazz = exampleString.getClass();
// Display design information
System.out.println("Class Name: " + clazz.getName());
System.out.println("Superclass: " + clazz.getSuperclass());
System.out.println("Implemented Interfaces: " + Arrays.toString(clazz.getInterfaces()));
// ... Other design information
// You can also get information about constructors, methods, and fields
// using clazz.getConstructors(), clazz.getMethods(), and clazz.getFields() respectively.
}
}
In this example, exampleString.getClass()
returns the Class
object associated with the String
class, and then you can use various methods of the Class
class to obtain design information about the object.