what is used for @Qualifier?
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1.Find String concurrency 2.find 3 highest salary of employee 3.java 8 features
interface vs abstract class
@qualifier, @primary, @autowired annotations
java basics spring boot data jpa
Question based on JavaScript for accessing form element using Java script.
Q. What is the purpose of the hashCode() method? Ans. The hashCode() method generates a unique integer for an object, aiding in efficient data retrieval in hash-based collections. Used in hash-based collections like HashMap and HashSet for quick data access. Returns an integer value, which is the hash code of the object. Two equal objects must have the same hash code (consistent with equals()).
Different between @Controller and @RestController
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