How to override a constructor? What is hashcode and equals? Why we go for comparator? Without wait and notify how to solve consumer and producer problem? What is downcasting? Springboot annotation What is method reference Spring exception Profiling

Question

Accepted Answer

Technical interview questions on Java and Springboot

To override a constructor, create a new constructor with the same name and parameters in the subclass
Hashcode and equals are methods used for comparing objects in Java. Hashcode returns an integer value while equals returns a boolean value
Comparator is used to sort objects based on custom criteria. It is used when the natural ordering of objects is not suitable
Consumer and producer problem can be solved using a blocking queue
Downcasting is the process of casting a superclass object to a subclass object. It can lead to runtime errors if not done properly
Springboot annotations are used to configure the Spring framework. Examples include @RestController, @Autowired, and @RequestMapping
Method reference is a shorthand syntax for lambda expressions. It is used to refer to a method without invoking it
Spring exception handling is done using @ExceptionHandler annotation. It is used to handle exceptions thrown by the application
Profiling is the process of measuring the performance of an application. It is used to identify performance bottlenecks and optimize the application

How to override a constructor? What is hashcode and equals? Why we go for comparator? Without wait and notify how to solve consumer and producer problem? What is downcasting? Springboot annotation What is method reference Spring exception Profiling

Top Capgemini Senior Associate interview questions & answers

Popular interview questions of Senior Associate

Top HR questions asked in Capgemini Senior Associate