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Design - Interview Questions and Answers for 'Deutche bank' - 1 question(s) found - Order By Newest

 Q1. Draw uml for singleton pattern.Design
 This question was recently asked at 'deutche bank'.This question is still unanswered. Can you please provide an answer.


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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 ?
 When singleton can break and how to resolve it
 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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