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Technical Lead Java Interview Questions

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511 technical lead java interview questions shared by candidates

1. Asked very basic questions on OOPS - (you need to be very good at basics). 2.project architecture 3.Spring IOC/DI 4. Was asked about Design patterns and why did i chose those while i used them. 5.and following questions on design patterns 6. adapter design pattern. etc. Bas
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JAVA Developer/Lead

Interviewed at CitiusTech

3.7★
Nov 5, 2019

1. Asked very basic questions on OOPS - (you need to be very good at basics). 2.project architecture 3.Spring IOC/DI 4. Was asked about Design patterns and why did i chose those while i used them. 5.and following questions on design patterns 6. adapter design pattern. etc. Bas

First Round: OOPS Concept in details Working of Hashmap Working of Linkedlist Difference between ArrayList and LinkedList Difference between Abstract class and interface. Scopes in Spring AutoWire in Spring , ways to achieve. Dependency Injection. Beans in Dependency Injection. Null value in Hashmap. Query for top 5 employee having highest salary. SOAP and RestFull Service difference. How to achieve security in RestFull Service. Hibernate object states. If there is a detached state how can it be reuse. What protocol soap and rest use. Exception Hierarchy . Hibernate Save, persist and Merge. Second Round: What is synchronized keyword and its uses. Which one is fast JSP or servlet. Types of auto wiring and difference. Used any Performance management tool? If we want any query param to be required , how can we achieve it? What is MVC? (There were more questions, but currently I forgot). Third Round: Composition and aggregation Hashmap working Custom key object Optional class List of states in sorted order with Maharashtra on top Parallel stream. Can we catch error how ? How two web-service communicate each other DI Cyclic dependency. Auth, authentication, authorization Method override for different exceptions in parent and sub class (There were more questions, but currently I forgot).
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Technical Lead - Java

Interviewed at Wipro

3.6★
Dec 6, 2018

First Round: OOPS Concept in details Working of Hashmap Working of Linkedlist Difference between ArrayList and LinkedList Difference between Abstract class and interface. Scopes in Spring AutoWire in Spring , ways to achieve. Dependency Injection. Beans in Dependency Injection. Null value in Hashmap. Query for top 5 employee having highest salary. SOAP and RestFull Service difference. How to achieve security in RestFull Service. Hibernate object states. If there is a detached state how can it be reuse. What protocol soap and rest use. Exception Hierarchy . Hibernate Save, persist and Merge. Second Round: What is synchronized keyword and its uses. Which one is fast JSP or servlet. Types of auto wiring and difference. Used any Performance management tool? If we want any query param to be required , how can we achieve it? What is MVC? (There were more questions, but currently I forgot). Third Round: Composition and aggregation Hashmap working Custom key object Optional class List of states in sorted order with Maharashtra on top Parallel stream. Can we catch error how ? How two web-service communicate each other DI Cyclic dependency. Auth, authentication, authorization Method override for different exceptions in parent and sub class (There were more questions, but currently I forgot).

All sort of basic questions in Java straight from method overriding/overloading to exception handling. I even wondered whether interviewer was referring to summary of topics in Java or some online forum to conduct the interview.
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Technical Lead - Java

Interviewed at Altimetrik

3.8★
Jun 15, 2017

All sort of basic questions in Java straight from method overriding/overloading to exception handling. I even wondered whether interviewer was referring to summary of topics in Java or some online forum to conduct the interview.

1) Write a code that should be used as a jar for finding duplicates words in a String(specifically mentioned "please do write better code than a fresher") then he went away for 20 mins. 2) Some basic questions on differences on REST vs SOAP, XML Vs JSON. 3) Write minesweeper or snakes & ladder design.
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Java Lead

Interviewed at Siemens

4.1★
Feb 5, 2017

1) Write a code that should be used as a jar for finding duplicates words in a String(specifically mentioned "please do write better code than a fresher") then he went away for 20 mins. 2) Some basic questions on differences on REST vs SOAP, XML Vs JSON. 3) Write minesweeper or snakes & ladder design.

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