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| Core java - Interview Questions and Answers for 'Tavant technology' - 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 ) and Epam Systems | ||||
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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 == vs equals equals vs ==  Asked in 294 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. Yes, an abstract class can have a constructor in Java. | ||||
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| Discuss Correct / Improve abstract class public constructor Asked in 1 Companies | ||||
| Related Questions | ||||
| Differences between abstract class and interface ? | ||||
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| If an Abstract class has only abstract methods, What's the difference between such a class and an interface ? | ||||
| What are the design considerations while making a choice between using interface and abstract class ? | ||||
| How is Abstraction implemented in Java ? | ||||
| Difference between Base Class, Derived Class , Abstract Class and Concrete Class ? | ||||
| What is an abstract class ? | ||||
| Shall we use abstract classes or Interfaces in Policy / Strategy Design Pattern ? | ||||
| Will this code Work ? If not , Why ? | ||||
| Is java.util.Date an abstract Class ? Is java.util.Calendar an abstract Class ? | ||||
