3Edge Solutions Java Developer Interview Questions and Answers

Q1. What is java? what is database? what is springboot? what is package?
Ans. 
Java is a popular programming language used for developing various applications. Database is a structured collection of data. Spring Boot is a framework for building Java-based applications. Package is a way to organize classes and interfaces in Java.
• Java is a high-level, object-oriented programming language known for its portability and versatility.

• Database is a structured collection of data organized for easy access,...read more
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Q1. Coding question: Given a sorted array of numbers. All numbers have freq of 2 in array except one number. Find that number with T.C of logn
Ans. 
Find the single number in a sorted array with frequency of 2 for all other numbers.
• Use binary search to find the number with different frequency.

• Check if the mid element is at even or odd index to determine which side to search next.

• Example: Input array [1, 1, 2, 2, 3, 3, 4, 4, 5] should return 5.
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Q2. Print left view of tree
Ans. 
Print the left view of a tree by traversing the tree from left to right at each level
• Traverse the tree using level order traversal

• Print the first node at each level encountered during traversal
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Q1. Detailed discussion on projects
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Q2. Questions on O.S like about deadlocks,etc..
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Q1. Microservice what is and Architecture
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Microservices are a software development approach where applications are broken down into smaller, independent services that communicate with each other.
• Microservices are small, independent services that work together to form a larger application

• Each microservice is responsible for a specific function or feature

• Microservices communicate with each other through APIs

• Microservices can be developed, deployed, and scaled in...read more
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Q1. Profermance and error management questions
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Coding test are assessments that are designed to evaluate a developer's coding skills and aptitude.

An aptitude test is an exam used to determine an individual's skill or propensity to succeed in a given activity

Basic of java advance java spring boot

Reverse the value of array ,string,loop

Q1. What is java? what is database? what is springboot? what is package?
Ans. 
Java is a popular programming language used for developing various applications. Database is a structured collection of data. Spring Boot is a framework for building Java-based applications. Package is a way to organize classes and interfaces in Java.
• Java is a high-level, object-oriented programming language known for its portability and versatility.

• Database is a structured collection of data organized for easy access,...read more
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Q1. Basic questions for ADF
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Q1. Basic HR round for CTC and notice period
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