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Technical Lead Java Interview Questions

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511 technical lead java interview questions shared by candidates

1. Remove second non repeating character from string using java 8 streams 2. What is eureka and feign 3. when will you use soap and when rest 4. disadvantages of rest apis 5. fail-fast and fail safe collections 6. idempotent methods in rest api
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Java Lead

Interviewed at Capgemini

4.2★
Oct 18, 2024

1. Remove second non repeating character from string using java 8 streams 2. What is eureka and feign 3. when will you use soap and when rest 4. disadvantages of rest apis 5. fail-fast and fail safe collections 6. idempotent methods in rest api

1. Solid principles 2. Singleton pattern, in case if we pass hashmap- map can be altered and it will destroy singleton, how to handle that 3. How to create threads 4. How to execute 10 threads at a time 5. How to create global exception class 6. When to use arraylist and linkedlist 7. Completable in java 8 8. What's changed in hashmap in java 8 9. Deep copying and shallow copying 10. Use of volatile keyword in java 11. Programming a. String ="I love programming" -we need to count the length and arrange it in desc but that should be return as string using stream api b. List in = Arrays.asList(1,3,7,0,6,7,8,0); need to sort this and put only 0 at first and let the remaining stay as it is using stream API
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Java Lead Developer

Interviewed at Hexaware Technologies

3.7★
May 23, 2025

1. Solid principles 2. Singleton pattern, in case if we pass hashmap- map can be altered and it will destroy singleton, how to handle that 3. How to create threads 4. How to execute 10 threads at a time 5. How to create global exception class 6. When to use arraylist and linkedlist 7. Completable in java 8 8. What's changed in hashmap in java 8 9. Deep copying and shallow copying 10. Use of volatile keyword in java 11. Programming a. String ="I love programming" -we need to count the length and arrange it in desc but that should be return as string using stream api b. List in = Arrays.asList(1,3,7,0,6,7,8,0); need to sort this and put only 0 at first and let the remaining stay as it is using stream API

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