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|Java - Interview Questions and Answers|
|Ans. Core technologies: dependency injection, events, resources, i18n, validation, data binding, type conversion, SpEL, AOP.|
Testing: mock objects, TestContext framework, Spring MVC Test, WebTestClient.
Data Access: transactions, DAO support, JDBC, ORM, Marshalling XML.
Spring MVC and Spring WebFlux web frameworks.
Integration: remoting, JMS, JCA, JMX, email, tasks, scheduling, cache.
Languages: Kotlin, Groovy, dynamic languages.
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|Difference between == and .equals() ?|
|Why is String immutable in Java ?|
| Explain the scenerios to choose between String , StringBuilder and StringBuffer ?|
What is the difference between String , StringBuilder and StringBuffer ?
|What are the difference between composition and inheritance in Java?|
|Does garbage collection guarantee that a program will not run out of memory?|
|Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?|
|What are different ways to create String Object? Explain.|
|Why Char array is preferred over String for storing password?|
| Explain OOPs |
Explain OOPs Principles
Explain OOPs Concepts
Explain OOPs features
Tell me something about OOPs
|What is the difference between Encapsulation and Abstraction?|