Coders Learning

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Java Roadmap | |-- Fundamentals | |-- Basics of Programming | | |-- Introduction to Java | | |-- Java Development Kit (JDK) and Java Runtime Environment (JRE) | | |-- Setting Up Development Environment (IDE: IntelliJ IDEA, Eclipse, etc.) | | | |-- Syntax and Structure | | |-- Basic Syntax | | |-- Variables and Data Types | | |-- Operators and Expressions | |-- Control Structures | |-- Conditional Statements | | |-- If-Else Statements | | |-- Switch Case | | | |-- Loops | | |-- For Loop | | |-- While Loop | | |-- Do-While Loop | | | |-- Exception Handling | | |-- Try-Catch Block | | |-- Finally Block | | |-- Throw and Throws Keywords | |-- Object-Oriented Programming (OOP) | |-- Basics of OOP | | |-- Classes and Objects | | |-- Methods and Constructors | | | |-- Inheritance | | |-- Single and Multiple Inheritance | | |-- Method Overriding | | |-- Super Keyword | | | |-- Polymorphism | | |-- Method Overloading | | |-- Runtime Polymorphism | | |-- Dynamic Method Dispatch | | | |-- Encapsulation | | |-- Access Modifiers (Public, Private, Protected) | | |-- Getters and Setters | | |-- Data Hiding | | | |-- Abstraction | | |-- Abstract Classes | | |-- Interfaces | |-- Advanced Java | |-- Collections Framework | | |-- List (ArrayList, LinkedList) | | |-- Set (HashSet, TreeSet) | | |-- Map (HashMap, TreeMap) | | |-- Queue (PriorityQueue, LinkedList) | | | |-- Concurrency | | |-- Multithreading (Creating Threads, Thread Lifecycle) | | |-- Synchronization | | |-- Concurrency Utilities (Executors Framework, Callable and Future, Locks and Semaphores) | |-- Java Standard Libraries | |-- I/O Streams | | |-- File Handling (File Class, Reading and Writing Files) | | |-- Streams (Byte Streams, Character Streams, Buffered Streams) | | | |-- Networking | | |-- Sockets (TCP and UDP, Socket and ServerSocket Classes) | | |-- URL and HTTP (URL Class, HttpURLConnection) | | | |-- JDBC | | |-- Database Connectivity (JDBC Drivers, Connection, Statement, and ResultSet) | | |-- PreparedStatement and CallableStatement | |-- Java Frameworks | |-- Spring Framework | | |-- Spring Core (Dependency Injection, Inversion of Control) | | |-- Spring MVC (Model-View-Controller Architecture) | | |-- Spring Boot (Creating Spring Boot Applications, Starters and Auto-Configuration, Actuator) | | | |-- Hibernate | | |-- ORM Basics (Introduction to ORM, Configuration and Mapping) | | |-- Advanced Hibernate (Caching, Transactions and Concurrency, Criteria API) | |-- Web Development with Java | |-- Java EE (Jakarta EE) | | |-- Servlets (Lifecycle, Handling HTTP Requests and Responses, Session Management) | | |-- JavaServer Pages (JSP) (Syntax, Directives, JSTL and Custom Tags, Expression Language) | | | |-- RESTful Web Services | | |-- JAX-RS (Creating RESTful Services, Annotations and HTTP Methods, Consuming RESTful Services) | |-- Build Tools and Dependency Management | |-- Maven | | |-- Project Object Model (POM), Dependencies, Repositories, Build Lifecycle and Plugins | | | |-- Gradle | | |-- Build Scripts, Dependency Management, Task Automation | |-- Testing in Java | |-- Unit Testing | | |-- JUnit (Annotations, Assertions, Test Suites and Runners) | | | |-- Mockito (Creating Mocks and Spies and Verification) | | | |-- Integration Testing | | |-- Spring Test (Testing Spring Components and WebTestClient) | |-- Deployment and DevOps | |-- Containers and Microservices | | |-- Docker (Dockerfile, Image Creation, Container Management) | | |-- Kubernetes (Pods, Services, Deployments, Managing Java Applications on Kubernetes) Join @coderslearning for more! ✅ ENJOY LEARNING👍👍

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Basic Web Development Roadmap 🟧 1.Learn: How websites work, front-end vs back-end, code editor‌‌ 🟧 2: Basic front-end: a. Html b. Css c. Javascript Expected time 7+14+30=51 days. 🟧 3. Learn front-end frameworks: a. Learn css framework ( Bootstrap , Tailwind css , ...) b. Learn JavaScript frameworks ( angular, react , vue...) Expected time minimum 60 days. 🟧 4. Learn database a. MySQL b. MongoDB There are many more. Choose one and learn. 🟧 5. Learn backend programming languages: a. Php b. Nodejs There are many more. Learn any one. Expected time: 60 days 🟧 6. Do some projects and clone some websites. ▫️▫️🟧▫️▫️ Web Development Best Resources: https://bit.ly/3MxD4Ww ENJOY LEARNING 👍👍

Basic Web Development Roadmap 🟧 1.Learn: How websites work, front-end vs back-end, code editor‌‌ 🟧 2: Basic front-end: a. Html b. Css c. Javascript Expected time 7+14+30=51 days. 🟧 3. Learn front-end frameworks: a. Learn css framework ( Bootstrap , Tailwind css , ...) b. Learn JavaScript frameworks ( angular, react , vue...) Expected time minimum 60 days. 🟧 4. Learn database a. MySQL b. MongoDB There are many more. Choose one and learn. 🟧 5. Learn backend programming languages: a. Php b. Nodejs There are many more. Learn any one. Expected time: 60 days 🟧 6. Do some projects and clone some websites. ▫️▫️🟧▫️▫️ Web Development Best Resources: https://bit.ly/3MxD4Ww ENJOY LEARNING 👍👍

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SQL INTERVIEW PREPARATION Explain the differences between DELETE, TRUNCATE, and DROP commands in SQL. Answer: These three SQL commands are used to remove data from a database, but they operate in different ways and serve different purposes. DELETE: - Purpose: Removes specific rows from a table based on a condition. - Usage: Can delete all rows or a subset of rows from a table. - Syntax:

  DELETE FROM table_name WHERE condition;
  

- Example:

  DELETE FROM employees WHERE department_id = 10;
  

- Characteristics: - Can use WHERE clause to filter which rows to delete. - Generates row-level locks. - Deletes one row at a time, which can be slower for large tables. - Can be rolled back if used within a transaction. - Triggers, if defined, will be fired. TRUNCATE: - Purpose: Removes all rows from a table, resetting it to its empty state. - Usage: Used when you need to quickly remove all data from a table. - Syntax:

  TRUNCATE TABLE table_name;
  

- Example:

  TRUNCATE TABLE employees;
  

- Characteristics: - Cannot use WHERE clause. - Faster than DELETE as it deallocates the data pages instead of row-by-row deletion. - Resets any AUTO_INCREMENT counters. - Cannot be rolled back in some database systems as it is a DDL operation. - Does not fire triggers. DROP: - Purpose: Removes an entire table or database from the database. - Usage: Used when you need to completely remove a table or database structure. - Syntax:

  DROP TABLE table_name;
  DROP DATABASE database_name;
  

- Example:

  DROP TABLE employees;
  

- Characteristics: - Permanently deletes the table or database and all its data. - Cannot be rolled back; once dropped, the table or database is gone. - All indexes and triggers associated with the table are also deleted. - Removes table definition and data. Tip: Use DELETE when you need to remove specific rows and want the option to roll back the transaction. Use TRUNCATE when you need to quickly clear all data from a table without deleting the table structure itself. Use DROP when you need to completely remove a table or database structure and all associated data permanently. Always ensure you have backups and understand the impact of these operations before executing them. Like this post if you want me to continue this SQL series 👍♥️ Hope it helps :)

Don't overwhelm to learn Git,🙌 Git is only this much👇😇 1.Core: • git init • git clone • git add • git commit • git status • git diff • git checkout • git reset • git log • git show • git tag • git push • git pull 2.Branching: • git branch • git checkout -b • git merge • git rebase • git branch --set-upstream-to • git branch --unset-upstream • git cherry-pick 3.Merging: • git merge • git rebase 4.Stashing: • git stash • git stash pop • git stash list • git stash apply • git stash drop 5.Remotes: • git remote • git remote add • git remote remove • git fetch • git pull • git push • git clone --mirror 6.Configuration: • git config • git global config • git reset config 7. Plumbing: • git cat-file • git checkout-index • git commit-tree • git diff-tree • git for-each-ref • git hash-object • git ls-files • git ls-remote • git merge-tree • git read-tree • git rev-parse • git show-branch • git show-ref • git symbolic-ref • git tag --list • git update-ref 8.Porcelain: • git blame • git bisect • git checkout • git commit • git diff • git fetch • git grep • git log • git merge • git push • git rebase • git reset • git show • git tag 9.Alias: • git config --global alias.<alias> <command> 10.Hook: • git config --local core.hooksPath <path> ✅ Best Telegram channel to get Job Updates: https://t.me/Offcampusjobupdateslive ✅ Free Courses with Certificate: https://t.me/coderslearning

Don't overwhelm to learn Git,🙌 Git is only this much👇😇 1.Core: • git init • git clone • git add • git commit • git status • git diff • git checkout • git reset • git log • git show • git tag • git push • git pull 2.Branching: • git branch • git checkout -b • git merge • git rebase • git branch --set-upstream-to • git branch --unset-upstream • git cherry-pick 3.Merging: • git merge • git rebase 4.Stashing: • git stash • git stash pop • git stash list • git stash apply • git stash drop 5.Remotes: • git remote • git remote add • git remote remove • git fetch • git pull • git push • git clone --mirror 6.Configuration: • git config • git global config • git reset config 7. Plumbing: • git cat-file • git checkout-index • git commit-tree • git diff-tree • git for-each-ref • git hash-object • git ls-files • git ls-remote • git merge-tree • git read-tree • git rev-parse • git show-branch • git show-ref • git symbolic-ref • git tag --list • git update-ref 8.Porcelain: • git blame • git bisect • git checkout • git commit • git diff • git fetch • git grep • git log • git merge • git push • git rebase • git reset • git show • git tag 9.Alias: • git config --global alias.<alias> <command> 10.Hook: • git config --local core.hooksPath <path> ✅ Best Telegram channels to get free coding & data science resources https://t.me/addlist/4q2PYC0pH_VjZDk5 ✅ Free Courses with Certificate: https://t.me/free4unow_backup