What is Singleton Class in Java?

o    A singleton class has only single instance

o    A single object can be used by all other classes.

o    It is used in multi-threaded and database applications, configuration settings etc.

o Singleton class should have static member , private constructor and static method

        public class SingleTon1{

         private static SingleTon1 obj;                    //Static member

       

           private SingleTon1(){                              //Private Constructor

                System.out.println("Hi User");

                      }

         public static SingleTon1 getInstance(){            //Static method

                        if(obj == null){

                        obj = new  SingleTon1();

                              }

                      return  obj;

                             }

       public void Display(){

       System.out.println("Welcome to LearingPoint92");

                                         }

    

       public static void main(String a[]){

       SingleTon1 st =SingleTon1.getInstance()

         st.Display();

                            }

                        }