Aspire Systems RPA Developer Interview Questions and Answers

Q1. Tell me about yourself and the project you have done
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Q2. Have you work on the spring boot freamwork
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Q3. Collection framework
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Q4. Write a program to make a Linkedlist, you have to develop the logic for the linkedlist suppose your are the first who is going to invent the linkedlist what would be the apporach how you create the add/del...read more
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Q5. Have you worked on the Data Structures
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Yes, I have worked on various data structures like arrays, linked lists, stacks, queues, trees, and graphs.
• I have implemented algorithms using data structures like sorting, searching, and traversal.

• I have optimized code by choosing the appropriate data structure for the problem.

• I have used data structures in projects to efficiently store and manipulate data.
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Q6. Have you worked on the Multithreading
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Yes, I have experience working on Multithreading in Java.
• Implemented multithreading using Java's Thread class

• Used synchronized keyword to handle thread synchronization

• Utilized Executor framework for managing thread pools
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Q7. Write a program to find the min and max no from the array
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Program to find min and max no from array of strings
• Iterate through the array and compare each element to find min and max

• Use Integer.parseInt() to convert strings to integers for comparison

• Initialize min and max variables with first element of array
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Q8. Difference between the @controller vs @restcontroller
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The @Controller annotation is used to create a controller class in Spring MVC, while @RestController is used to create RESTful web services.
• The @Controller annotation is used to create a controller class in Spring MVC, which is used to handle traditional web requests.

• The @RestController annotation is used to create RESTful web services, which return data in JSON or XML format.

• The @RestController annotation is a special...read more
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Q9. Difference between the @service vs @Repository
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The @Service annotation is used to mark a class as a service, while the @Repository annotation is used to mark a class as a repository.
• The @Service annotation is typically used on service layer classes, which contain business logic.

• The @Repository annotation is typically used on repository classes, which interact with a database or other data source.

• Both annotations are used for component scanning and dependency inject...read more
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Q10. Difference between the Arrylist vs Linkedlist
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ArrayList is implemented using a dynamic array while LinkedList is implemented using a doubly linked list.
• ArrayList provides fast access to elements using index, but slow insertion and deletion.

• LinkedList provides fast insertion and deletion, but slow access to elements.

• Example: ArrayList is suitable for scenarios where random access is required, while LinkedList is suitable for scenarios where frequent insertion and d
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Q1. Explain exceptional handling
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Exception handling is a mechanism to handle runtime errors in a program.
• Exception handling helps in gracefully handling unexpected errors in a program.

• It prevents the program from crashing and allows for proper error logging and recovery.

• Commonly used keywords in exception handling are try, catch, finally, and throw.

• Example: try { // code that may throw an exception } catch(Exception ex) { // handle the exception }
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Q2. Explain difference between abstract and interfaces
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Abstract classes can have implementation details while interfaces cannot.
• Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.

• A class can only inherit from one abstract class, but can implement multiple interfaces.

• Abstract classes can have constructors, fields, and properties, while interfaces cannot.

• Abstract classes are used when some common functionality ne...read more
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Q3. One coding question on arrays
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Q1. Difference between ArrayList and LinkedList?
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ArrayList is implemented as a resizable array, while LinkedList is implemented as a doubly linked list.
• ArrayList provides fast random access, LinkedList provides fast insertion and deletion.

• ArrayList uses more memory as it needs to allocate a fixed size array, LinkedList uses more memory for storing references to the next and previous elements.

• Example: ArrayList is better for scenarios where random access is required, ...read more
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Q2. Difference between HashMap and HashTable?
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HashMap is non-synchronized and allows null values, while HashTable is synchronized and does not allow null values.
• HashMap is non-synchronized, meaning it is not thread-safe, while HashTable is synchronized and thread-safe.

• HashMap allows null values for both keys and values, while HashTable does not allow null keys or values.

• HashMap is faster than HashTable as it is non-synchronized, but HashTable is preferred in multi...read more
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Q1. Micro service disadvantage
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Microservices can introduce complexity, communication overhead, and potential performance issues.
• Increased complexity due to managing multiple services

• Communication overhead between services

• Potential performance issues due to network latency

• Difficulty in maintaining consistency across services
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Q2. @functionalinterface can we extend or not, map & flatmap
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No, @FunctionalInterface cannot be extended. Map and flatMap are default methods in the interface and cannot be overridden.
• No, @FunctionalInterface cannot be extended as it is a single abstract method interface.

• Map and flatMap are default methods in the interface and cannot be overridden.

• Example: public interface MyInterface { void myMethod(); default void myDefaultMethod() { // implementation } }
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Q1. Why functional interface when we have interface
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Functional interfaces provide a single abstract method for functional programming in Java.
• Functional interfaces allow for lambda expressions and method references to be used as instances of the interface.

• Interfaces with multiple abstract methods cannot be used for lambda expressions.

• Example: java.util.function.Function is a functional interface with a single abstract method apply().
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Q2. Java 8 explain all features in short
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Java 8 introduced new features like lambda expressions, streams, functional interfaces, and default methods.
• Lambda expressions: Allows writing concise code by enabling functional programming.

• Streams: Provides a way to work with sequences of elements efficiently.

• Functional interfaces: Interfaces with a single abstract method, used for lambda expressions.

• Default methods: Allows adding new methods to interfaces without br
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Q3. If one functional interface can extend another interface
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Yes, one functional interface can extend another interface in Java.
• Functional interfaces can extend other functional interfaces in Java.

• The child interface can have only one abstract method, but can inherit default methods from the parent interface.

• Example: interface Parent { void method1(); } interface Child extends Parent { void method2(); }
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Q1. Project amd Advanced C++ concepts
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C++ coding questions and logical questions

General Aptitude round based on numbers,verbal,time

Any language u can use but need to solve 5 problems

The averages of 20 numbers is zero of them at the most how many may be greater than zero