Interview preparation guide for working professionals

Hello folks :)  

Practice makes the man perfect 😀

I'm Senior Software Engineer by profession and working in top leading multinational company as Consultant. 

Note : If you are also aiming for Java full stack developer interviews in 2023 but are confused about how to prepare for Java interviews then you have come to the right place.

As we all know Java is an ocean of concepts, there are various concepts on which the interviewer can ask questions based on your experience, technology and projects you have worked on.

I'm sharing the most frequently interview questions asked in to the Top leading MNC for mid level software engineers like, HCL Technologies, IBM, Cognizant, Capgemini, TCS, Mphasis, Walking Tree, Birlasoft, Tech Mahindra, EY, LTI Mindtree, I have already given the interview in these companies and have relevant offer for the same.

I have categorized the Interview full stack topics into 4 section.

        1. Java Fundamentals & Advance Collection guide
        2. Angular Frequently asked question.
        3. Spring boot & AWS Integration and Deployment
        4. Microservices Development 

Section-1 : 

• Introduce yourself along with the technology and projects you have done.?
• Explain the Java8 feature with Realtime example.?
• How to create an immutable Object in Java? What are the Benefits?
• Type of cloning is possible in Java.?
• What is a singleton class? Give a practical example of its usage.?
• Lambda expression why it is invented what is the relation with functional interface.?
• Can we create class which can be both supper and sub class at the same.?
• How will you restrict inheritance for a class ?
• can we override Abstract class.?
• Difference between Vector and Array List?
• Difference between HashMap and HashTable?
• How to convert an array of String to ArrayList.?
• How to convert the list of object in to the array.?
• What is difference between fail-fast and fail-safe?
• Why we need abstract class if we have Interface with n number of static and default member?
• Exact difference in implementing thread via runnable interface vs extending thread class.?
• Exact use of marker interface.?
• Difference between sleep() and wait(), notify() and notifyAll() Methods?
• Can We Assign ‘null‘ to ‘this‘ Reference Variable.?
• Can variable be local and static at same time.?
• Difference between Stack and Heap Memory in Java?
• Thread life cycle.?
• Stream question - : 

Sort the list of object in ascending order
Sort by name,
Sort by salary
Sort by department and findFirst 10 element'
Increase the salary of employee to 10% where salary is less than 10K
Find the male and female employees 
Show all department name as distinct
Arraylist 0f 1- 100 number in randomly inserted need list in descending order WITH FIRST                    10 ODD NUMBERS.

Section-2: