CodesJava

Easy learning with example program codes

Java reflection get parameter type


The java.lang.Class provides the methods to examine the runtime properties of the object including its members and type information. For every type of object, the JVM instantiates an immutable instance of java.lang.Class. Using reflection, we can get the metadata of a class at run time.

The getTypeParameters() is used to get the array of type variables if there are any type parameters associated with the class.

Example

ReflectionTest.java

package com.codesjava;
 
import java.lang.reflect.TypeVariable;
 
public class ReflectionTest {
	public static void main(String args[]){
		try {
			TypeVariable<?>[] typeParameters = Class.forName("java.util.TreeMap").getTypeParameters();
			for(TypeVariable<?> t : typeParameters)
			System.out.println(t.getName());
		} catch (Exception e) {
			e.printStackTrace();
		}  
	}
}

Output

K
V
Sign Up/ Sign In
Ask a Question


Industrial Training

We offers Placement Oriented Training on Java, Spring, JSF, Hibernate, PHP, AngularJS, Angular 4, PLSQL, Oracle BI Publisher etc. We also provides Online training, please mail us at hr@codesjava.com.

Development

We also provides the Development services for Website Development , Java Development, PHP Development, Android App Development etc. You can contact us on hr@codesjava.com.

Copyright © 2018 CodesJava DMCA.com Protection Status SiteMap Reference: Java Wiki