TechStalwarts Software Development Associate Software Developer Interview Questions, Process, and Tips

Array, string ,DSA ,Collection ,Stream API ,exception handling

Q1. What is java ?
Ans. 
Java is a high-level programming language known for its portability, security, and object-oriented features.
• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM).

• It is used for developing a wide range of applications, from mobile apps to enterprise systems.

• Java is known for its strong security features, such as sandboxing and encryption.

• It is an object-oriented language, allow...read more
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Q2. Why String is immutable?
Ans. 
String is immutable in Java to ensure security, thread safety, and optimization.
• Immutable strings prevent accidental changes to data.

• String pool optimization is possible due to immutability.

• Thread safety is ensured as strings cannot be modified concurrently.

• Security is enhanced as sensitive data cannot be altered.
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Q3. WHat is thread ?
Ans. 
A thread is a lightweight process that can run concurrently with other threads within the same process.
• Threads allow for parallel execution of tasks within a single process

• Threads share the same memory space and resources of the process

• Threads can communicate with each other through shared variables or message passing

• Examples: Java threads, POSIX threads (pthreads) in C
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Q4. What is map ?
Ans. 
A map is a collection of key-value pairs where each key is unique and used to retrieve the corresponding value.
• Maps are commonly used in programming to store data in an organized manner.

• Keys in a map are used to access the associated values.

• Examples of maps include dictionaries in Python and HashMaps in Java.
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Q5. What is collection ?
Ans. 
A collection is a group of related objects or data items that are stored together.
• Collections can be used to store and manipulate groups of data in programming.

• Examples include arrays, lists, sets, and maps.

• Collections provide methods for adding, removing, and accessing elements.
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