hCentive Java Interview Questions
Carvia Tech | December 31, 2017 | 1 min read | 15 views
What do you understand by thread-safety ? What are various mechanisms to achieve thread-safety in java ?
How will you design your own ReentrantReadWriteLock class where one thread can write and many threads can read in parallel ? How does it affect the throughput of a multi-threaded system ?
What are various methods to acquire lock in java ? discuss their comparison.
How to avoid deadlock in your application ?
How is ConcurrentHashMap better than hashmap in java ?
What are different memory generations in Java ? What is Stack and heap memory ?
Write a thread-safe Singleton Java Class.
What is difference between hashtable, hashmap and Concurrenthashmap in java ?
What is difference between Iterator and ListIterator in Java ?
What is Immutable Class ? What is reason behind using a Immutable class in your application ?
What is difference between String, StringBuffer and StringBuilder ?
What is difference between CheckedException and UncheckedException ? Give some example of RuntimeException ?
What are different Bean scopes in Spring ? What is the default bean scope ?
How many objects Spring container creates for a given bean definition ?
What is Bean Lifecyle ?
How do you encrypt a password in spring security ?
Describe practical use of Spring Interceptors ?
What is Servlet LifeCycle ?
How do you declare a custom error page in Spring ?
What is difference between doGet() and doPost() methods ?
What is difference between Forward and Redirect ?
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