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| Interview Questions and Answers for 'Blue star infotech' - 2 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 | |||||
| Help us improve. Please let us know the company, where you were asked this question : | |||||
 Discuss Correct / Improve  java string comparison string object class == equals object equality operator  Asked in 292 Companies  basic  frequent | |||||
 Try 6 Question(s) Test | |||||
 Related Questions | |||||
 What is the difference between = and == in Java ? | |||||
| How is == operator different for objects and primitive types ? | |||||
| What will be the output of following code Integer x = 1; Integer y = 2; System.out.println(x == y); What if you change 1 to "1" and Integer to String? | |||||
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| Ans. Abstraction, Encapsulation, Polymorphism , Composition and Inheritance | |||||
| Help us improve. Please let us know the company, where you were asked this question : | |||||
| Discuss Correct / Improve core oops concepts Asked in 65 Companies basic frequent | |||||
| Related Questions | |||||
| What are the difference between composition and inheritance in Java? | |||||
| Explain OOPs or Explain OOPs Principles or Explain OOPs Concepts or Explain OOPs features or Tell me something about OOPs | |||||
| What is the difference between Encapsulation and Abstraction? | |||||
| What are points to consider in terms of access modifier when we are overriding any method? | |||||
| What is Polymorphism in Java ? | |||||
| Can you give a real world example of Encapsulation and Abstraction ? | |||||
| Why every object constructor automatically call super() in Object before its own constructors? | |||||
| Difference between Overloading and Overriding ? | |||||
| Difference between Composition and Inheritance ? | |||||
| How compiler handles the exceptions in overriding ? | |||||
