Question $13$

Consider the below code:

public class MyDemoClass $($

private static volatile MyDemoClass myInstance $=$ null;

public static MyDemoClass instance$()($ if $($myInstance $==$ null$)\{$

synchronized $($MyDemoClass$.$class$)($

if $($myInstance $==$ null$)$

myInstance $=$ new MyDemoClass$()$;

return myInstance:

private MyDemoClass$()($

public void displayMessage $()$

System.out.println$("$Welcome to Java World!"$)$;

The below code is an example of:

Double$-$checked locking

One of the ways to create thread safe Singleton class.

Example of Singleton Pattern

Returns a half$-$initialized Singleton Pattern object.

Select the statements that are correct.