# Can You Access Hacker Rank Solution

Hello coders, In this post, you will learn how to solve Can You Access Hacker Rank Solution. This problem is a part of the Java programming series.

One more thing to add, don’t straight away look for the solutions, first try to solve the problems by yourself. If you find any difficulty after trying several times, then look for the solutions.

## Can You Access Hacker Rank Solution

### Objective

You are given a class Solution and an inner class Inner.Private. The main method of class Solution takes an integer num  as input. The powerof2 in class Inner.Private checks whether a number is a power of . You have to call the method powerof2 of the class Inner.Private from the main method of the class Solution.

Constraints

1<=num<=2power30

Sample Input

``````8
``````

Sample Output

``````8 is power of 2
An instance of class: Solution.Inner.Private has been created``````

### Can You Access Hacker Rank Solution

```import java.io.BufferedReader;
import java.security.Permission;
public class Solution {
public static void main(String[] args) throws Exception {
Do_Not_Terminate.forbidExit();
try {
int num = Integer.parseInt(br.readLine().trim());
Object o;// Must be used to hold the reference of the instance of
// the class Solution.Inner.Private
Inner inner = new Inner();
Inner.Private p = inner.new Private();
System.out.println(num + " is " + p.powerof2(num));
o = p;
System.out.println("An instance of class: " + o.getClass().getCanonicalName() + " has been created");
} // end of try
catch (Do_Not_Terminate.ExitTrappedException e) {
System.out.println("Unsuccessful Termination!!");
}
}// end of main
static class Inner {
private class Private {
private String powerof2(int num) {
return ((num & num - 1) == 0) ? "power of 2" : "not a power of 2";
}
}
}// end of Inner
}// end of Solution
class Do_Not_Terminate {
public static class ExitTrappedException extends SecurityException {
private static final long serialVersionUID = 1L;
}
public static void forbidExit() {
final SecurityManager securityManager = new SecurityManager() {
@Override
public void checkPermission(Permission permission) {
if (permission.getName().contains("exitVM")) {
throw new ExitTrappedException();
}
}
};
System.setSecurityManager(securityManager);
}
}```

Disclaimer: The above Problem (Can You Access ) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

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