The getTypeParameters() method of java.lang.Class class is used to get the type parameters of this entity. This entity can be a class, an array, an interface, etc. The method returns an array of TypeVariable objects representing the type variables.
Syntax:
public TypeVariable<Class<T>> getTypeParameters()
Parameter: This method does not accept any parameter.
Return Value: This method returns an array of TypeVariable objects representing the type variables.
Below programs demonstrate the getTypeParameters() method.
Example 1:
// Java program to demonstrate getTypeParameters() method import java.util.*;
public class Test {
public static void main(String[] args)
throws ClassNotFoundException
{
// returns the Class object for this class
Class myClass = Class.forName("Test");
System.out.println("Class represented by myClass: "
+ myClass.toString());
// Get the type parameters of myClass
// using getTypeParameters() method
System.out.println(
"TypeParameters of myClass: "
+ Arrays.toString(
myClass.getTypeParameters()));
}
} |
Class represented by myClass: class Test TypeParameters of myClass: []
Example 2:
// Java program to demonstrate getTypeParameters() method import java.util.*;
public class Test {
public static void main(String[] args)
throws ClassNotFoundException
{
// returns the Class object for this class
Class myClass = Class.forName("java.lang.Integer");
System.out.println("Class represented by myClass: "
+ myClass.toString());
// Get the type parameters of myClass
// using getTypeParameters() method
System.out.println(
"TypeParameters of myClass: "
+ Arrays.toString(
myClass.getTypeParameters()));
}
} |
Class represented by myClass: class java.lang.Integer TypeParameters of myClass: []
Reference: https://docs.oracle.com/javase/9/docs/api/java/lang/Class.html#getTypeParameters–