LTIMindtree Java Developer Interview Questions, Process, and Tips for Freshers

Q1. Callable vs runnable?
Ans. 
Callable is used to return a result and can throw checked exceptions, while Runnable is used for void operations.
• Callable can return a result and throw checked exceptions, while Runnable cannot.

• Callable is a functional interface with a method call() that returns a result, while Runnable is a functional interface with a method run() that does not return a result.

• Example: Callable<Integer> task = () -> { return 5 +...read more
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Q2. Functional interface
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Q3. Java 8 features
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Q4. Solid principle
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Q5. Which design pattern to use for complex design?
Ans. 
Use the Strategy design pattern for complex design.
• Strategy pattern allows you to define a family of algorithms, encapsulate each one, and make them interchangeable.

• It helps in separating the behavior of a class from the class itself, making it easier to switch between different algorithms at runtime.

• Examples of using Strategy pattern include implementing different sorting algorithms in a class or defining various paym
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90 Minutes of MCQ and coding test

Q1. Topics on java8, spring boot, Microservices, MySQL.
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Q2. Explain Streams
Ans. 
Streams in Java are sequences of elements that support functional-style operations.
• Streams allow for processing sequences of elements in a functional style.

• They can be created from various data sources like collections, arrays, or I/O channels.

• Operations on streams can be intermediate (e.g. filter, map) or terminal (e.g. forEach, collect).

• Streams promote parallel processing and lazy evaluation for improved performance.

• ...read more
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Q3. Working of HashMap
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HashMap is a data structure in Java that stores key-value pairs and allows fast retrieval of values based on keys.
• HashMap uses hashing to store key-value pairs, which allows for fast retrieval of values.

• Keys in a HashMap must be unique, but values can be duplicated.

• HashMap allows null keys and null values.

• HashMap is not synchronized, so it is not thread-safe. To make it thread-safe, you can use ConcurrentHashMap.

• Exampl...read more
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Q4. Spring boot annotations
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Q5. Spring security
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