Infosys Application Developer Interview Questions, Process, and Tips

Q1. What is @SpringbootAnnotation and what is difference between @Controller and @RestController.
Ans. 
SpringBootAnnotation is used to enable Spring Boot features in a Java application. @Controller is used for MVC pattern, @RestController is used for RESTful web services.
• SpringBootAnnotation is used to enable Spring Boot features like auto-configuration, component scanning, etc.

• @Controller is used for MVC pattern to handle web requests and return a view, while @RestController is used for RESTful web services to return d...read more
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Q2. What is Stream API write the Stream API Code any code and lambda expression.
Ans. 
Stream API in Java provides a way to process collections of objects in a functional style.
• Stream API allows for easy manipulation of collections using functional programming concepts like map, filter, and reduce.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); names.stream().filter(name -> name.startsWith("A")).forEach(System.out::println);

• Lambda expressions can be used with Stream API to define behavio...read more
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Q1. Boxing Unboxing
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Q2. Abstract class and interface
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Q1. Functional component
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Q2. Life cycle method of react
Ans. 
React has several life cycle methods that are called at different stages of a component's life cycle.
• componentDidMount() is called after the component has been rendered to the DOM

• componentDidUpdate() is called after the component's updates are flushed to the DOM

• componentWillUnmount() is called before the component is removed from the DOM
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Q1. Company experience
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Q2. Salary discussion
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Patterns programs, magical number problem