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Software Developer Iii Interview Questions

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7,035 software developer iii interview questions shared by candidates

First Round: Print the following. 1 1 2 1 2 3 4 3 2 1 2 1 1 Write a web.XML servlet mapping. How many servlet threads will be there for 1000 servlet requests? Synchronized methods inside a servlet, allowed? Servlet life cycle? Can we write synchronized blocks in servlets? When is the servlet's destroy method called? What is the design pattern involved? Why do we need an init method, what if I don't use it? Hashmap is a collection? Enumerator vs iterator, which is thread safe and why? Write an ajax call for auto suggest. How many kinds of ajax calls are there? Will getElementById work with out form? What is wsdl n what are its components? Do u know about an XML parser? How it is parsed? Second Round: Design a parking lot Un/checked exceptions Throws clause, what if not specified? Sort an array in order(n): 0 0 1 1 0 1 1 1 0 Third Round: why do we have packages in PL/SQL. where do we declare a global variable? If you declare a global variable in a package header, will it accessible to the package body or entire world? If you declare a global variable in package body, will it accessible to the package body or entire world? How will you move date from one database to another, if table structure of same? Select all employee records who complete 10 years in on 31-Dec-2015
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Applications Developer III

Interviewed at Oracle

3.4★
Dec 30, 2015

First Round: Print the following. 1 1 2 1 2 3 4 3 2 1 2 1 1 Write a web.XML servlet mapping. How many servlet threads will be there for 1000 servlet requests? Synchronized methods inside a servlet, allowed? Servlet life cycle? Can we write synchronized blocks in servlets? When is the servlet's destroy method called? What is the design pattern involved? Why do we need an init method, what if I don't use it? Hashmap is a collection? Enumerator vs iterator, which is thread safe and why? Write an ajax call for auto suggest. How many kinds of ajax calls are there? Will getElementById work with out form? What is wsdl n what are its components? Do u know about an XML parser? How it is parsed? Second Round: Design a parking lot Un/checked exceptions Throws clause, what if not specified? Sort an array in order(n): 0 0 1 1 0 1 1 1 0 Third Round: why do we have packages in PL/SQL. where do we declare a global variable? If you declare a global variable in a package header, will it accessible to the package body or entire world? If you declare a global variable in package body, will it accessible to the package body or entire world? How will you move date from one database to another, if table structure of same? Select all employee records who complete 10 years in on 31-Dec-2015

Technical questions: 1. Is java 100% object oriented? Justify 2. What do you understand by string pool? 3. Explain method overriding with example. 4. What is overloading? What is method overloading and operator overloading? 5. Can constructors be overridden? (No) why? 6. What is threading? 7. What is multithreading? 8. There r lot of advantages of multithreading, but what could be the possible disadvantages. 9. We have a database how would you make it search efficient (ans-indexing) more questions on indexing 10. Some advanced java concepts, I don't remember. 11. What's conflict management? How would you manage it. 12. Singleton class 13. Collection API 14. What is the superclass of any java program? (Ans, object class) More questions on object class, like what methods are included in object class. 15. What is an API, give examples 16. In java can strings b immutable? Explain 17. Difference between string buffer, string pool, string builder. 18. Tell me about JIT (just in time interpreter) Why is it used? 19. Questions on static keyword. 20. Final keyword. 21. New technology you're recently come across. 22. Interfaces in java 23. How would you store large amount of data in your database, and how would you retrieve it efficiently? 24. What's synchronisation and why is it important 25. What is an infinite loop 26. Can we compare strings using equality == operator? 27. Access specifiers.
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Barclays Analysis III

Interviewed at Barclays

4★
Aug 21, 2019

Technical questions: 1. Is java 100% object oriented? Justify 2. What do you understand by string pool? 3. Explain method overriding with example. 4. What is overloading? What is method overloading and operator overloading? 5. Can constructors be overridden? (No) why? 6. What is threading? 7. What is multithreading? 8. There r lot of advantages of multithreading, but what could be the possible disadvantages. 9. We have a database how would you make it search efficient (ans-indexing) more questions on indexing 10. Some advanced java concepts, I don't remember. 11. What's conflict management? How would you manage it. 12. Singleton class 13. Collection API 14. What is the superclass of any java program? (Ans, object class) More questions on object class, like what methods are included in object class. 15. What is an API, give examples 16. In java can strings b immutable? Explain 17. Difference between string buffer, string pool, string builder. 18. Tell me about JIT (just in time interpreter) Why is it used? 19. Questions on static keyword. 20. Final keyword. 21. New technology you're recently come across. 22. Interfaces in java 23. How would you store large amount of data in your database, and how would you retrieve it efficiently? 24. What's synchronisation and why is it important 25. What is an infinite loop 26. Can we compare strings using equality == operator? 27. Access specifiers.

Tech Round 1: CS Fundamental questions and resume oriented, DSA ( merging interval problem) and SQL(Aggregation] and some Database questions. Tech Round2 : Again CS Fundamentals, Go Programming language (Goroutine), Database Indexing, System-Design (I don't remeber the exact problem statement)
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Software Development Engineer (SDE) III

Interviewed at Safe Security

4★
Jul 29, 2025

Tech Round 1: CS Fundamental questions and resume oriented, DSA ( merging interval problem) and SQL(Aggregation] and some Database questions. Tech Round2 : Again CS Fundamentals, Go Programming language (Goroutine), Database Indexing, System-Design (I don't remeber the exact problem statement)

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