When singleton can break and how to resolve it
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 Q1. When singleton can break and how to resolve itDesign
Ans. Deserialization. In serialization, we can save the object of a byte stream into a file or send over a network. Suppose if you serialize the Singleton class, and then again de-serialize that object, it will create a new instance, hence deserialization will break the Singleton pattern.

To overcome this issue, we need to override readResolve() method in the Singleton class and return the same Singleton instance.

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//Double Checked Locking Code
public static Singleton createInstance() {
   if(singleton == null){
      synchronized(Singleton.class) {
         if(singleton == null) {
            singleton = new Singleton();
         }
      }
   }
   return singleton;
}

//Single checked locking code
public static Singleton createInstance() {
   synchronized(Singleton.class) {
      if(singleton == null) {
         singleton = new Singleton();
      }
   }
   return singleton;
}
 What are design situations to use Singleton and Prototype Design Pattern ?
 How to avoid cloning, serialization in the singleton class ?
 If you are given choice to either load object eagerly or lazily , which one would you use in case of singleton pattern ?
  When should we use prototype scope and singleton scope for beans ?
  Explain Singleton Design Pattern ?



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