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Search Interview Questions |  3268 questions in repository. There are more than 200 unanswered questions. Click here and help us by providing the answer. Have a video suggestion. Click Correct / Improve and please let us know. |
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| Interview Questions and Answers for 'Trianz' - 5 question(s) found - Order By Newest | |||||
 Very frequently asked. Among first few questions in almost all interviews. Among Top 5 frequently asked questions. Frequently asked in Indian service companies (HCL,TCS,Infosys,Capgemini etc based on multiple feedback ) | |||||
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| Ans. "equals" is the method of object class which is supposed to be overridden to check object equality, whereas "==" operator evaluate to see if the object handlers on the left and right are pointing to the same object in memory. x.equals(y) means the references x and y are holding objects that are equal. x==y means that the references x and y have same object. Sample code: String x = new String("str"); String y = new String("str"); System.out.println(x == y); // prints false System.out.println(x.equals(y)); // prints true | |||||
 Sample Code for equals | |||||
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 Discuss Correct / Improve  java string comparison string object class == equals object equality operator  Asked in 289 Companies  basic  frequent | |||||
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| Ans. Its an anonymous method without any declaration. Lambda Expression are useful to write shorthand Code and hence saves the effort of writing lengthy Code. It promotes Developer productivity, Better Readable and Reliable code. | |||||
| Sample Code for lambda | |||||
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| Discuss Correct / Improve java java8 lambda expression architecture Asked in 57 Companies expert frequent | |||||
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| Frequently asked question in companies using Hibernate. | |||||
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| Ans. It's a feature to lazily initialize dependencies , relationship and associations from the Database. Any related references marked as @OneToMany or @ManyToMany are loaded lazily i.e when they are accessed and not when the parent is loaded. | |||||
| Sample Code for Lazy Initialization | |||||
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| Discuss Correct / Improve hibernate lazy loading hibernate lazy initialization hibernate architecture Asked in 77 Companies Basic frequent | |||||
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| Basic and Very Frequently asked. | |||||
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| Ans. Polymorphism means the condition of occurring in several different forms. Polymorphism in Java is achieved in two manners 1. Static polymorphism is the polymorphic resolution identified at compile time and is achieved through function overloading whereas 2. Dynamic polymorphism is the polymorphic resolution identified at runtime and is achieved through method overriding. | |||||
| Sample Code for overloading Sample Code for overriding | |||||
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| Discuss Correct / Improve polymorphism object oriented programming (oops) oops concepts oops concepts Asked in 107 Companies Basic frequent | |||||
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| Ans. Abstraction, Encapsulation, Polymorphism , Composition and Inheritance | |||||
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| Discuss Correct / Improve core oops concepts Asked in 64 Companies basic frequent | |||||
Which of the following statement is not true ?
