Below is a very easy program which can be used by programmers if they want to learn about Singleton pattern in Java.


package com.javagenious.singleton;
public class JavaGeniousSimpleSingletonExample {
 private static SimpleSingleton simpleSingleton;
 private SimpleSingleton() {
 public static SimpleSingleton getInstance() {
  if (simpleSingleton == null)
   simpleSingleton = new SimpleSingleton();
  return simpleSingleton;


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Sandeep Joshi
Mathematics, Technology and Programming are my passion. I am a part of Java Ecosystem and through this blog, I contribute to it. I am here to blog about my interests, views and experiences.
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I feel proud to be listed as a "National Memory Record Holder" in the Limca Book of Records, 2009 and have attempted for an International Memory record in the Guiness Book of Records. I can remember the value of PI upto 10,000 digits after the decimal (3.1415.....). You can contact me on ; I would like to hear from you :)