LTIMindtree Software Engineering Specialist Interview Questions and Answers

Promises in JavaScript are objects representing the eventual completion or failure of an asynchronous operation.

• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() method to handle success and failure.

• Example: const myPromise = new Promise((resolve, reject) => { ... });

Transient, Scoped, and Singleton are different types of dependency injection lifetimes in software engineering.

• Transient: New instance is created every time it is requested. Suitable for lightweight objects with no shared state.

• Scoped: Instance is created once per request within the scope. Suitable for objects that are shared within a single request.

• Singleton: Single instance is created and shared throughout the applic...read more

I am a dedicated software engineer with a passion for problem-solving and creating innovative solutions.

• Experienced in multiple programming languages such as Java, Python, and C++

• Strong background in software development methodologies like Agile and Scrum

• Skilled in database management and cloud computing technologies

• Have worked on projects involving machine learning and artificial intelligence

The word count problem involves counting the frequency of words in a given text.

• Use Java 8 streams to split the text into words, map each word to a key-value pair with word as key and count as value, and then collect the results using groupingBy and counting collectors.

• Example: Stream.of(text.split("\\s+")).collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));

Spring Boot annotations are used to simplify the development process by providing metadata to the Spring framework.

• Annotations like @Component, @Service, @Repository are used to define object scopes in Spring Boot.

• Annotations like @Scope can be used to specify the scope of a bean, such as singleton or prototype.

• Annotations like @RequestScope, @SessionScope are used to define object scopes based on HTTP request or sessi...read more

The deployment process in Salesforce involves moving changes from one environment to another in a controlled and systematic manner.

• Changes are typically made in a sandbox environment before being deployed to production.

• Deployment can be done manually or using tools like Salesforce DX or Change Sets.

• Version control systems like Git can also be used to track changes and facilitate deployment.

• Testing is an important part ...read more

Salescloud is a customer relationship management (CRM) platform developed by Salesforce.

• CRM platform used for managing customer relationships and sales processes

• Helps track customer interactions, leads, opportunities, and sales

• Provides tools for marketing automation, analytics, and reporting

• Integrates with other Salesforce products like Marketing Cloud and Service Cloud

Use Callable interface to return Object from Thread

• Implement Callable interface instead of Runnable

• Use ExecutorService to submit Callable and get Future object

• Call get() method on Future object to retrieve the returned Object

Implementing cache in core Java involves using data structures like HashMap or LinkedHashMap.

• Use HashMap or LinkedHashMap to store key-value pairs in memory

• Implement a mechanism to check if the data is already in cache before fetching from the main source

• Set a maximum size for the cache and implement a strategy to evict least recently used items if the cache is full

Spring profiles allow for different configurations based on environment or application needs.

• Spring profiles are used to define different configurations for different environments or application needs.

• Profiles can be activated using the 'spring.profiles.active' property in application.properties or application.yml.

• Profiles can be defined using annotations like @Profile or by creating separate configuration files for ea...read more