Global Logica Software Technologies Java Developer Interview Questions and Answers

Q1. They asked some core Java Concepts,String,Java 8,SpringBoot Architecture,Stream API code
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Q1. Micro service disadvantage
Ans. 
Microservices can introduce complexity, communication overhead, and potential performance issues.
• Increased complexity due to managing multiple services

• Communication overhead between services

• Potential performance issues due to network latency

• Difficulty in maintaining consistency across services
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Q2. @functionalinterface can we extend or not, map & flatmap
Ans. 
No, @FunctionalInterface cannot be extended. Map and flatMap are default methods in the interface and cannot be overridden.
• No, @FunctionalInterface cannot be extended as it is a single abstract method interface.

• Map and flatMap are default methods in the interface and cannot be overridden.

• Example: public interface MyInterface { void myMethod(); default void myDefaultMethod() { // implementation } }
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Q1. Multivalued map
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Q2. Basic core java
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30 multiple choice questions

Two coding questions

Q1. Oops questions like main principles of oops
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Q1. Deep in project
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Q1. Self intro, family background,some hr questions
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Q1. Kadane's Algorithm
Ans. 
Kadane's Algorithm is used to find the maximum subarray sum in an array.
• Iterate through the array and keep track of the maximum sum ending at each index.

• If the sum at any index becomes negative, reset the sum to 0.

• Return the maximum sum found.

• Example: For array [-2, 1, -3, 4, -1, 2, 1, -5, 4], the maximum subarray sum is 6 (from index 3 to 6).
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Q2. Reverse a linkedin list
Ans. 
Reverse a linked list by changing the pointers direction
• Iterate through the linked list and change the direction of pointers

• Use three pointers - current, previous, and next to reverse the list

• Update the head of the list to the last node after reversing
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Q1. Design Instagram
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Q1. Normal intro and hr related questions
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Q1. Explain your Project. What features you have made Git related questions like code merge pull Jira tool Java questions mostly from collectiions Springboot related question Then some design pattern.
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Java progaming, coding

Few programs to write and execute

Q1. All about microservices and spring boot
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Q2. Hibernate related they asked many questions
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