TCS Java Developer Interview Questions, Process, and Tips

Q1. Am good in java as well as SQL
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Q2. Am good in SQL ask any questions on SQL
Ans. Am good in java as well as SQL
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Q3. Ask any questions in SQL
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Q4. What is SQL and java structure
Ans. 
SQL is a language used to manage relational databases. Java is a programming language used for developing applications.
• SQL is used to create, modify, and query databases

• Java is used to write code for applications that interact with databases

• Java has built-in libraries for connecting to databases using JDBC

• SQL and Java can be used together to create dynamic web applications
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Q5. Java programming structure
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Java programming structure refers to the organization of code in a Java program.
• Java programs are organized into classes, which contain methods and variables.

• Classes can be grouped into packages for better organization.

• Java follows a strict syntax and structure, with curly braces indicating code blocks.

• Code must be compiled before it can be executed.

• Java programs follow an object-oriented programming paradigm.
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Q1. What is core features of spring framework?
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Spring framework has core features like dependency injection, aspect-oriented programming, and Spring MVC.
• Dependency Injection: allows objects to be created and managed by Spring container

• Aspect-Oriented Programming: provides modularization of cross-cutting concerns

• Spring MVC: provides a model-view-controller architecture for web applications
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Q2. Explain the usage of multithreading
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Multithreading allows multiple threads to run concurrently, improving performance and responsiveness.
• Multithreading is useful for tasks that can be split into smaller, independent parts.

• It can improve performance by allowing multiple threads to execute simultaneously.

• It can also improve responsiveness by allowing the UI thread to remain responsive while other tasks are running in the background.

• Examples include downloa...read more
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Q3. What is daemon thread? How it help in multithreading?
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Daemon thread is a low priority thread that runs in the background and provides services to other threads.
• Daemon threads are used for tasks that don't require user interaction or input.

• They are automatically terminated when all non-daemon threads have completed.

• Examples include garbage collection, logging, and monitoring.

• They can be created using setDaemon() method.

• Daemon threads should not be used for tasks that requi...read more
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Q1. Salary discussion was don
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Q1. What are the difference between abstract class and interface, and throw and throws, and why we use throws?? Why String is Immutable?
Ans. 
Explaining differences between abstract class and interface, throw and throws, and why we use throws. Also, why String is immutable.
• Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

• A class can implement multiple interfaces, but can only extend one abstract class.

• Throw is used to explicitly throw an exception, while throws is used to declare the exceptions th...read more
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Q2. What are the services used??
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Q3. It was quite easy, and i got selected in tcs , after that i have submitted my all the documents in portal, after that it's been a one month, but they have not send me any mail that i have got selected or n...read more
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Q1. About project what i have done in my previous company
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Q1. About salary discussion and proofs submission.
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Q1. Basics concepts of oops
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Q2. How to connect two database in single application
Ans. 
To connect two databases in a single application, create two separate connection objects and use them as needed.
• Create two separate connection objects for each database

• Use the appropriate connection object for each database operation

• Ensure that the connection details for each database are correct

• Handle any errors that may occur during the connection process
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Questions related to quant, English Passage, etc.

Q1. Tell me about your project.
Ans. 
Developed a web application for online shopping with user authentication and payment gateway integration.
• Used Java Spring framework for backend development

• Implemented RESTful APIs for communication between frontend and backend

• Integrated Stripe API for secure payment processing
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Q2. Questions related to OOPS. What are its four pillars and explain them with some examples.
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