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Interview Questions and Answers for 'Deutche bank' - 2 question(s) found - Order By Newest

  Q1. What is the use of HashCode in objects ?Core Java
Ans. Hashcode is used for bucketing in Hash implementations like HashMap, HashTable, HashSet etc.

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   Like         Discuss         Correct / Improve     java   string   hashcode   hash code   string comparison  hashtable     Asked in 17 Companies      basic        frequent


Related Questions

  Which String class does not override the equals() and hashCode() methods, inheriting them directly from class Object?
 Write a class and override the equals and hashcode method ?
 How many threads can access a concurrent hashmap when the hashcode is overridden and always returns a zero.


 Q2. 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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   Like         Discuss         Correct / Improve     design pattern   singleton     Asked in 1 Companies


Related Questions

 Difference between Static and Singleton Class ?
 What is the difference between these two approaches of creating singleton Class ?

//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 is the difference between Singleton and Prototype Bean scope in Spring ?
 serialization and deserialization of singleton class
 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 ?
  Shouldn't we make a class with all static members is its just expected to be executed as a standalone program with just one thread. Moreover Lets assume that there is no runtime Polymorphism required and there is no need for serialization ?



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