Accenture Software Engineer Interview Questions, Process, and Tips

Q1. Re framework, Document understanding, Orchestrator
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Q2. Object repository
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Q1. Difference between == and equals()?
Ans. 
The == operator is used to compare the reference of objects in memory, while the equals() method is used to compare the content of objects.
• == compares the memory reference of objects, while equals() compares the content

• == is used for primitive data types, while equals() is used for objects

• Example: String str1 = new String("hello"); String str2 = new String("hello"); str1 == str2 will return false, but str1.equals(str2)
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Q2. Explain static keyword in java?
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The static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.
• Static variables are shared among all instances of a class.

• Static methods can be called without creating an object of the class.

• Static blocks are used to initialize static variables.

• Static keyword can also be used to create static nested classes.
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Q3. Make a custom exception in java?
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To create a custom exception in Java, you need to extend the Exception class.
• Create a new class that extends the Exception class

• Add a constructor to the custom exception class

• Throw the custom exception using the 'throw' keyword
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Q4. Virtual DOM in React?
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Virtual DOM is a lightweight copy of the actual DOM in React, used for efficient updates.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is maintained by React.

• When changes are made to the virtual DOM, React compares it with the actual DOM to identify the minimal changes needed.

• This process helps in optimizing performance by reducing the number of updates to the actual DOM.

• Example: When a user inter...read more
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Q5. Fetching and displaying data from API?
Ans. 
Fetching and displaying data from API involves making HTTP requests to retrieve data and then rendering it on the user interface.
• Use HTTP methods like GET, POST, PUT, DELETE to interact with the API endpoints.

• Parse the JSON response data and format it for display on the UI.

• Handle errors and loading states while fetching data asynchronously.

• Implement pagination or infinite scrolling for large datasets.

• Consider caching d...read more
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Q1. What are closures in Js
Ans. 
Closures in JavaScript are functions that have access to variables from their outer scope even after the outer function has finished executing.
• Closures allow functions to access variables from their parent function even after the parent function has finished executing.

• They are created whenever a function is defined within another function.

• Closures are commonly used to create private variables and functions in JavaScrip
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Easy to clear and questions are all basic

Basic concepts like arrays , strings , dsa

Q1. Difference between JVM and JRE?
Ans. 
JVM is a virtual machine that executes Java bytecode, while JRE includes JVM along with libraries and other components.
• JVM stands for Java Virtual Machine, which is responsible for executing Java bytecode.

• JRE stands for Java Runtime Environment, which includes JVM along with libraries and other components needed to run Java applications.

• JVM is platform-dependent, while JRE is platform-independent.

• JVM is an abstract mac...read more
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Q2. Can we override static methods?
Ans. 
No, static methods cannot be overridden in Java.
• Static methods belong to the class itself, not to individual instances.

• Subclasses can have static methods with the same signature, but they will not override the superclass static method.

• Example: Parent class has a static method 'display()', and Child class also has a static method 'display()'. These are two separate methods, not an override.
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Q3. What is exception handling?
Ans. 
Exception handling is a mechanism to handle errors or exceptional situations in a program.
• Exception handling allows the program to gracefully handle errors without crashing.

• It involves using try, catch, and finally blocks to manage exceptions.

• Examples include catching divide by zero errors or file not found exceptions.
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Q4. Types of exception handling?
Ans. 
Types of exception handling include try-catch, throw, throws, and finally.
• try-catch: Used to catch and handle exceptions within a block of code.

• throw: Used to explicitly throw an exception.

• throws: Used in method signature to declare the exceptions that can be thrown by the method.

• finally: Used to execute code after try block, regardless of whether an exception is thrown or not.
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Q5. Explain the work of @qualifier annotation?
Ans. 
The @Qualifier annotation in Spring is used to disambiguate bean instances when multiple beans of the same type are present.
• Used to specify which bean should be autowired when multiple beans of the same type are present

• Can be used on fields, methods, or constructor parameters

• Helps in resolving the ambiguity in autowiring scenarios
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Q6. Why main method is static and public in java?
Ans. 
The main method in Java is static and public for accessibility and to allow the JVM to call it without creating an instance of the class.
• Static - main method is static so that the JVM can call it without creating an instance of the class.

• Public - main method is public to allow the JVM to access and execute it.

• Accessibility - main method needs to be accessible by the JVM to serve as the entry point of the program.
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Q7. Featues of NoSQL
Ans. 
NoSQL databases are non-relational databases that provide flexible schema design, horizontal scalability, and high performance.
• Flexible schema design allows for dynamic and unstructured data

• Horizontal scalability enables easy distribution of data across multiple nodes

• High performance due to optimized data retrieval and storage mechanisms
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Q8. Program to filter and sort the Employees list using stream.
Ans. 
Program to filter and sort Employees list using stream in Java.
• Use Java Stream API to filter and sort the Employees list.

• Create a stream from the Employees list.

• Use filter() method to filter the Employees based on a condition.

• Use sorted() method to sort the filtered Employees list.
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Q9. What is Lamda function?
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Lambda function is an anonymous function in programming that can be used as a parameter to another function.
• Lambda functions are also known as anonymous functions because they do not have a name.

• They are often used in functional programming languages to pass functions as arguments to higher-order functions.

• Lambda functions are concise and can be written in a single line of code.

• Example: lambda x: x*2 defines a lambda f...read more
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Q10. Explain sonar qube
Ans. 
SonarQube is an open-source platform for continuous inspection of code quality.
• SonarQube analyzes code for bugs, vulnerabilities, and code smells.

• It provides detailed reports on code quality metrics and trends.

• Developers can use SonarQube to improve code quality and maintainability.

• Integrates with popular CI/CD tools like Jenkins for automated code analysis.
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Q11. Write query to fetch all employees name from database which starts from a alphabet.
Ans. 
Query to fetch employees whose names start with a specific alphabet.
• Use SQL query with LIKE operator and wildcard character %.

• Example: SELECT name FROM employees WHERE name LIKE 'A%';
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Q1. Tell me about your project
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Q2. Tell about hardships faced in the project
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