Demo of IllegalAccessException

Example of IllegalAccessException present in java.lang package.

Class Hierarchy:

IllegalAccessException is a class present in java.lang.* package and has following class hierarchy.

Figure2

Description:

Thrown when an application tries to reflectively (Java Reflection API) create an instance (other than an array), set or get a field, or invoke a method, but the currently executing method does not have access to the definition of the specified class, field, method or constructor.

Since:

JDK1.0

Example:

package com.javamultiplex.java.lang.exceptions; /** * @author Rohit Agarwal * @version 1.0 * @category java.lang/Exception * @since JDK 1.0 */ class Test { private Test() { } } public class IllegalAccessExceptionDemo { public static void main(String[] args) { try { /* * IllegalAccessException will be thrown because we are trying to * create an instance of Test class that has private no argument * constructor. * */ Test test = Test.class.newInstance(); System.out.println(test); } catch (InstantiationException | IllegalAccessException e) { e.printStackTrace(); } } }

Output:

Figure3

References:

https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalAccessException.html

Thank you friends, I hope you have clearly understood the solution of this problem. If you have any doubt, suggestion or query please feel free to comment below. You can also discuss this solution in our forum.

About Author:

I am simple guy with lot of ambitions. My main motive is to share whatever knowledge I have related to programming. With me you can easily learn how to solve any programming problem in Java.You can connect with me on social networking sites also.

Let's Get Connected: Linkedin | Facebook | Google Plus