Tudip Technologies Java Developer Trainee Interview Questions and Answers

Q1. Oops concept asked
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Q2. Springboot annotations
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Q1. Project details simply
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Q2. Springboot related
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Q1. Easy about salary
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Q2. Details about asked
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Q1. Api to update employees details
Ans. 
Create an API endpoint to update employee details.
• Use PUT method to update employee details

• Validate input data before updating

• Return success message or error message accordingly
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There was pattern question in any programming language and you have make the pattern dynamic.

Q1. 1 question on merge sort, 1 question on SQL queries, oops concepts in depth with real-life examples, core java concepts in depth, collection framework.
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Q2. Merge 2 sorted arrays,
Ans. 
Merge 2 sorted arrays into a single sorted array.
• Create a new array with the combined length of the two input arrays

• Use two pointers to iterate through the two arrays and compare elements to merge them into the new array

• Handle cases where one array is longer than the other
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Q3. Find the top salary of a department
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Q4. 4 pillars of oops
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Encapsulation, Inheritance, Polymorphism, Abstraction are the 4 pillars of OOPs
• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in Java

• Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Parent and Child classes

• Polymorphism: Ability to present the same interface for different data types. Example: Method overloading and overr...read more
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Code review to find bugs

Q1. State the features of interface Spring boot annotations Microservice communication table index
Ans. 
Interface features include abstraction, multiple inheritance, and contract enforcement.
• Abstraction: Interfaces allow for the definition of methods without implementation, providing a blueprint for classes to follow.

• Multiple Inheritance: Java interfaces support multiple inheritance, allowing a class to implement multiple interfaces.

• Contract Enforcement: Interfaces define a contract that implementing classes must adhere
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Q1. Print the even number .
Ans. 
Loop through numbers and print the even ones.
• Use a loop to iterate through numbers

• Check if each number is even using a modulo operation

• Print the even numbers
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Q2. Use of for loop
Ans. 
For loop is used for iterating over a collection of items or executing a block of code a specific number of times.
• For loop syntax: for(initialization; condition; increment/decrement) { // code to be executed }

• Can be used with arrays to iterate over each element: for(int i=0; i

• Can be used to repeat a block of code a specific number of times: for(int i=0; i<5; i++) { // code to b
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Q3. What is the inheritance
Ans. 
Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class.
• Allows a class to inherit properties and behaviors from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can access members of the base class

• Example: Class B inherits from Class A, B can use methods and variables of A
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Q4. What is the class and object
Ans. 
A class is a blueprint for creating objects, while an object is an instance of a class.
• A class defines the properties and behaviors of objects.

• An object is a specific instance of a class.

• Classes are used to create objects in object-oriented programming.

• Objects can interact with each other by calling methods defined in their class.

• Example: Class 'Car' defines properties like 'color' and 'model', while object 'myCar' is ...read more
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Q1. Self introduction
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Q1. Basic Java, Oops concept, Spring boot, DSA
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Q2. Mostly common question. Based on java.
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Q1. SAP related questions
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Q1. High level Managerial round
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