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DDL stands for Data Definition Language and is used to define and manage the structure of a database. DML stands for Data Manipulation Language and is used to manipulate the data within a database.
DDL commands are used to create, alter, and drop database objects such as tables, views, indexes, etc.
Examples of DDL commands include CREATE TABLE, ALTER TABLE, DROP TABLE, CREATE INDEX, etc.
DML commands are used to insert, ...
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I appeared for an interview in Jun 2023.
I applied via Company Website and was interviewed in Jul 2023. There were 4 interview rounds.
I have given the coding test in python language. Out of 5 questions, we have to attain a minimum of 3 questions.
I applied via LinkedIn and was interviewed in Apr 2023. There were 3 interview rounds.
Todo application javascript todo app creation needs to submit
I applied via Referral and was interviewed in Jul 2023. There were 4 interview rounds.
String , Array ,Collection framework related questions.
Ecommerce site with Login,Review,AddToCart,Order features,Filter features.
I applied via Recruitment Consulltant and was interviewed before Mar 2022. There were 6 interview rounds.
I applied via LinkedIn and was interviewed before Jan 2023. There was 1 interview round.
I applied via LinkedIn and was interviewed in Mar 2024. There was 1 interview round.
The process for Software Development Engineer involves planning, designing, coding, testing, and deploying software solutions.
Gather requirements from stakeholders
Create a design based on requirements
Write code to implement the design
Test the software for bugs and issues
Deploy the software for users to use
Iterate on feedback and make improvements
posted on 24 Apr 2024
I applied via Campus Placement and was interviewed in Oct 2023. There were 3 interview rounds.
It was online 60min test.
It was offline 30 min test.
posted on 26 Apr 2024
I applied via Campus Placement and was interviewed before Apr 2023. There was 1 interview round.
The 4 principles of OOP are Inheritance, Encapsulation, Abstraction, and Polymorphism.
Inheritance allows a class to inherit properties and behavior from another class.
Encapsulation restricts access to certain components within a class, protecting the data.
Abstraction hides complex implementation details and only shows the necessary features.
Polymorphism allows objects to be treated as instances of their parent class.
String buffer is synchronized and thread-safe, while string builder is not synchronized and faster.
String buffer is synchronized, making it thread-safe for use in multi-threaded environments.
String builder is not synchronized, providing better performance in single-threaded applications.
String builder is faster than string buffer due to lack of synchronization overhead.
Example: StringBuffer sb = new StringBuffer(); Str
Strings are immutable in order to ensure data integrity and security.
Immutable strings prevent accidental data modification, ensuring data integrity.
Immutable strings enhance security by preventing unauthorized access or tampering.
Immutable strings allow for more efficient memory management and optimization.
Example: 'Hello' cannot be changed to 'Hella' directly, a new string must be created.
There are two types of exceptions in Java: checked exceptions and unchecked exceptions.
Checked exceptions are checked at compile time and must be handled using try-catch or throws keyword.
Unchecked exceptions are not checked at compile time and include RuntimeException and its subclasses.
Examples of checked exceptions include IOException, SQLException, and ClassNotFoundException.
Examples of unchecked exceptions include...
Linear search is a simple searching algorithm that sequentially checks each element in a list until a match is found.
Iterate through each element in the list
Compare the current element with the target value
Return the index if a match is found, otherwise return -1
JDK includes JRE and development tools, while JRE includes only the Java Runtime Environment.
JDK stands for Java Development Kit, which includes JRE and development tools like compilers and debuggers.
JRE stands for Java Runtime Environment, which includes JVM and libraries necessary to run Java applications.
JVM stands for Java Virtual Machine, which is responsible for executing Java bytecode.
JDK is used for developing ...
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