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Program to find duplicate alphabets in a string
Create a HashMap to store the frequency of each alphabet
Iterate through the string and update the frequency in the HashMap
Iterate through the HashMap and print the alphabets with frequency greater than 1
A Java program to find vowels from a given string.
Create a string variable and initialize it with the given string.
Use a for loop to iterate through each character of the string.
Check if the character is a vowel using if statement and add it to a new string variable.
Print the new string variable containing all the vowels.
Inheritance in Java allows a class to inherit properties and methods from another class.
Use the 'extends' keyword to create a subclass that inherits from a superclass
The subclass can access all public and protected members of the superclass
Example: class Dog extends Animal { ... }
The 'super' keyword is used to call the superclass constructor or method
Controller in Spring is responsible for handling user requests and returning appropriate responses.
Controller receives requests from the client and delegates them to appropriate handlers
It maps the incoming requests to the corresponding handler methods
It returns the response to the client after processing the request
It can also handle exceptions and errors that occur during request processing
To configure server port in a Spring Boot app, modify the application.properties file.
Open the application.properties file
Add the following line: server.port=8080 (or any desired port number)
Save the file and restart the application
Find the lowest number from an arraylist using streams
Use stream.min() method to find the lowest number
Pass Comparator.naturalOrder() to get the lowest number
Handle empty list scenario using OptionalInt
Reverse a given string
Iterate through the string from end to start and append each character to a new string
Use StringBuilder or StringBuffer for better performance
Convert the string to a character array and swap the first and last characters, then move towards the middle until the entire string is reversed
Refresh scope is used in Spring framework to control the lifecycle of beans.
Refresh scope is used to create a new instance of a bean every time it is requested.
It is useful when the state of a bean needs to be reset on every request.
To use refresh scope, add @RefreshScope annotation to the bean definition.
Example: @Bean @RefreshScope public MyBean myBean() { return new MyBean(); }
The company is a leading innovator in technology solutions, focusing on enhancing user experience and operational efficiency.
Founded in 2010, the company has rapidly grown to become a market leader.
Offers a diverse range of products, including software, hardware, and cloud services.
Committed to sustainability, implementing eco-friendly practices in operations.
Recognized for exceptional customer service, receiving ...
Abstract classes are incomplete classes that cannot be instantiated. Anonymous classes are unnamed classes that can be created on the fly.
Abstract classes are declared with the 'abstract' keyword and can have abstract and non-abstract methods.
Anonymous classes are created using the 'new' keyword and can extend a class or implement an interface.
Anonymous classes are often used for event handling and callbacks.
Examp...
I applied via LinkedIn and was interviewed in Mar 2022. There were 3 interview rounds.
Reverse a given string
Iterate through the string from end to start and append each character to a new string
Use StringBuilder or StringBuffer for better performance
Convert the string to a character array and swap the first and last characters, then move towards the middle until the entire string is reversed
Program to find duplicate alphabets in a string
Create a HashMap to store the frequency of each alphabet
Iterate through the string and update the frequency in the HashMap
Iterate through the HashMap and print the alphabets with frequency greater than 1
A Java program to find vowels from a given string.
Create a string variable and initialize it with the given string.
Use a for loop to iterate through each character of the string.
Check if the character is a vowel using if statement and add it to a new string variable.
Print the new string variable containing all the vowels.
Abstract classes are incomplete classes that cannot be instantiated. Anonymous classes are unnamed classes that can be created on the fly.
Abstract classes are declared with the 'abstract' keyword and can have abstract and non-abstract methods.
Anonymous classes are created using the 'new' keyword and can extend a class or implement an interface.
Anonymous classes are often used for event handling and callbacks.
Example of...
Inheritance in Java allows a class to inherit properties and methods from another class.
Use the 'extends' keyword to create a subclass that inherits from a superclass
The subclass can access all public and protected members of the superclass
Example: class Dog extends Animal { ... }
The 'super' keyword is used to call the superclass constructor or method
Controller in Spring is responsible for handling user requests and returning appropriate responses.
Controller receives requests from the client and delegates them to appropriate handlers
It maps the incoming requests to the corresponding handler methods
It returns the response to the client after processing the request
It can also handle exceptions and errors that occur during request processing
To configure server port in a Spring Boot app, modify the application.properties file.
Open the application.properties file
Add the following line: server.port=8080 (or any desired port number)
Save the file and restart the application
Find the lowest number from an arraylist using streams
Use stream.min() method to find the lowest number
Pass Comparator.naturalOrder() to get the lowest number
Handle empty list scenario using OptionalInt
Developed a web-based inventory management system for a retail store
Used Java, Spring framework, and MySQL for backend development
Implemented user authentication and authorization using Spring Security
Designed the frontend using HTML, CSS, and JavaScript
Integrated barcode scanner for efficient inventory management
Conducted unit testing using JUnit and integration testing using Selenium
Deployed the application on AWS EC...
Refresh scope is used in Spring framework to control the lifecycle of beans.
Refresh scope is used to create a new instance of a bean every time it is requested.
It is useful when the state of a bean needs to be reset on every request.
To use refresh scope, add @RefreshScope annotation to the bean definition.
Example: @Bean @RefreshScope public MyBean myBean() { return new MyBean(); }
I applied via Walk-in and was interviewed in Jul 2021. There was 1 interview round.
The company is a leading innovator in technology solutions, focusing on enhancing user experience and operational efficiency.
Founded in 2010, the company has rapidly grown to become a market leader.
Offers a diverse range of products, including software, hardware, and cloud services.
Committed to sustainability, implementing eco-friendly practices in operations.
Recognized for exceptional customer service, receiving multi...
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I applied via Referral and was interviewed before Nov 2020. There were 3 interview rounds.
I applied via Naukri.com and was interviewed before Apr 2021. There were 2 interview rounds.
I applied via Naukri.com and was interviewed in Mar 2021. There was 1 interview round.
Test scenarios to test ATM machine
Test card insertion and ejection
Test PIN entry and validation
Test cash withdrawal and balance update
Test receipt printing
Test network connectivity and error handling
SQL joins are used to combine data from two or more tables based on a related column between them.
There are four types of SQL joins: inner join, left join, right join, and full outer join.
Inner join returns only the matching rows from both tables.
Left join returns all the rows from the left table and matching rows from the right table.
Right join returns all the rows from the right table and matching rows from the left ...
I appeared for an interview in Mar 2021.
I appeared for an interview before Jun 2016.
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