How to Use Try-With-Resources in Java for Cleaner Code

🌟 Day 1: Exploring JDBC in Advanced Java Hey everyone! 👋 I’ve just started learning Advanced Java, and today’s focus was on JDBC (Java Database Connectivity) — one of the most essential topics for connecting Java applications with databases. 💡 What is JDBC? JDBC (Java Database Connectivity) is an API that allows Java programs to interact with databases. It provides classes and interfaces to perform operations like connecting to a database, executing SQL queries, and handling results. ⚙️ JDBC Driver A JDBC driver acts as a translator between a Java application and a database. It converts Java method calls into database-specific commands so they can communicate effectively. 🧱 Types of JDBC Drivers (Architecture) 1️⃣ Type 1 – JDBC-ODBC Bridge Driver Uses ODBC to connect to the database. Platform dependent and slower. (Deprecated) 2️⃣ Type 2 – Native API Driver Converts JDBC calls into native database API calls. Requires native libraries. 3️⃣ Type 3 – Network Protocol Driver Uses middleware for database communication. More flexible and secure. 4️⃣ Type 4 – Thin Driver (Pure Java Driver) Directly converts JDBC calls into the database protocol. 100% Java-based and platform independent. Most commonly used in real-world projects. Type 4 drivers are the best choice for modern Java applications due to their speed, portability, and simplicity. 🎯 Goal: To become a confident Java Full Stack Developer 📍 Learning with: Codegnan Thanks to Codegnan, Uppugundla Sairam, Saketh Kallepu, Levaku Lavanya #Day1 #AdvancedJava #JDBC #JavaProgramming #LearningJourney #DatabaseConnectivity #BackendDevelopment #JavaAPI #CodingJourney #LearnJava #TechLearning #SoftwareDevelopment #JavaCommunity #FullStackDeveloper

Java continues to evolve, making coding simpler and more intuitive for developers. Java 25 is introducing a fantastic quality-of-life improvement: Module Import Declarations . The image shows a perfect example: ❌ Before (Java 24): We had to explicitly import every class we needed, often leading to a long block of import statements for common java.base classes like List, Map, Stream, Path, Files, etc. ✅ After (Java 25): We can now import the entire java.base module with a single statement: import module java.base; This makes all public classes from the module's exported packages (like java.util, java.io, java.nio, java.time) automatically available. This is a great step forward for reducing boilerplate and keeping our files clean right from the top. Excited to see this in action! . . . #Java25 #JavaDev #Oracle #SoftwareDevelopment #Coding #ProgrammingLanguages #Update

🌟 Day 1: Exploring JDBC in Advanced Java Hey everyone! 👋 I’ve just started learning Advanced Java, and today’s focus was on JDBC (Java Database Connectivity) — one of the most essential topics for connecting Java applications with databases. 💡 What is JDBC? JDBC (Java Database Connectivity) is an API that allows Java programs to interact with databases. It provides classes and interfaces to perform operations like connecting to a database, executing SQL queries, and handling results. ⚙️ JDBC Driver A JDBC driver acts as a translator between a Java application and a database. It converts Java method calls into database-specific commands so they can communicate effectively. 🧱 Types of JDBC Drivers (Architecture) 1️⃣ Type 1 – JDBC-ODBC Bridge Driver Uses ODBC to connect to the database. Platform dependent and slower. (Deprecated) 2️⃣ Type 2 – Native API Driver Converts JDBC calls into native database API calls. Requires native libraries. 3️⃣ Type 3 – Network Protocol Driver Uses middleware for database communication. More flexible and secure. 4️⃣ Type 4 – Thin Driver (Pure Java Driver) Directly converts JDBC calls into the database protocol. 100% Java-based and platform independent. Most commonly used in real-world projects. Type 4 drivers are the best choice for modern Java applications due to their speed, portability, and simplicity. 🚀 Excited to continue this learning journey! Stay tuned for Day 2, where I’ll explore how to establish a database connection using JDBC in Java. Thanks to 🙂 Uppugundla Sairam Saketh Kallepu Levaku Lavanya #Day1 #AdvancedJava #JDBC #JavaProgramming #Database #LearningJourney #Coding

☕ Exploring What’s New in Java 25! 🚀 The latest Long-Term Support (LTS) release of Java officially arrived in September 2025, bringing some of the most exciting updates yet. LTS versions are important — they’re stable, production-ready, and supported for years. With Java 25, the language takes another big step toward being simpler, faster, and more modern, while keeping all the power Java is known for. 💡 Over the years, Java has often been called verbose — requiring too much boilerplate for simple tasks. But with Java 25, we’re seeing a more streamlined, developer-friendly experience that boosts productivity and readability. In my latest presentation, I’ve summarized the major features of Java 25 with examples and real-world use cases — perfect for developers looking to stay current with the platform. 👉 For deeper dives, check out the official OpenJDK and Oracle documentation. Would love to hear — which Java 25 feature stands out the most to you? #Java25 #Java #BackendDevelopment #JavaDeveloper #Programming #SoftwareDevelopment #OpenJDK #SpringBoot #Microservices #TechTrends #Developers #CodingCommunity #SoftwareEngineer #JavaLTS

🌐 Introduction to Java : - Java is a high-level, object-oriented, platform-independent programming language developed by Sun Microsystems in 1995 (now owned by Oracle). It is one of the most popular programming languages in the world due to its simplicity, security, and portability. - The key principle of Java is "Write Once, Run Anywhere" (WORA), which means that Java code can run on any device or operating system that has a Java Virtual Machine (JVM). ⚡ Key Features of Java : 1) Simple – Easy to learn and understand. 2) Object-Oriented – Everything is treated as an object (supports concepts like inheritance, polymorphism, encapsulation). 3) Platform Independent – Compiled into bytecode, which runs on JVM across different systems. 4) Secure – Provides features like bytecode verification, exception handling, and no direct pointer manipulation. 5) Robust – Strong memory management and error handling. 6) Multithreaded – Can handle multiple tasks simultaneously. 7) High Performance – With the use of Just-In-Time (JIT) compilers. 8) Distributed – Supports networking and distributed applications. 🔑 Components of Java : - JDK (Java Development Kit) → Development tools + JRE. - JRE (Java Runtime Environment) → JVM + libraries to run Java applications. - JVM (Java Virtual Machine) → Executes Java bytecode and makes Java platform-independent. 🔑 Why Java? ✅ Simple and beginner-friendly ✅ Object-Oriented (real-world problem solving) ✅ Platform Independent ✅ Secure & Robust ✅ Supports Multithreading ✅ Widely used in Web Development, Mobile Apps (Android), Enterprise Systems & more #Corejava #Java #learningjava #Fortunecloud #Cravita

Java migrations don’t need to be complex. Our white paper lays out a zero-risk path from Oracle Java SE to Azul Platform Core. If you’re exploring OpenJDK, this is a must-read. https://lnkd.in/gkBnuRs4 #Java #OpenJDK #javamigration 

🚀 Day 101 — Understanding Core Java: JVM, JRE & JDK Today I went deep into the foundation of Java and finally understood the difference between JDK, JRE, and JVM — the most important concepts every Java developer should know. ✅ What is Java? Java is a platform-independent, object-oriented, secure, and high-performance language. The reason Java runs anywhere (Windows, Linux, Mac, etc.) is because of the JVM. Write Once, Run Anywhere (WORA) — Java’s core philosophy. ✅ JVM (Java Virtual Machine) JVM is the engine that executes Java programs. It reads bytecode (.class files) and converts it into machine code. Handles memory management and garbage collection. 👉 JVM = Execution Engine ✅ JRE (Java Runtime Environment) JRE includes the JVM + core Java libraries. It provides everything required to run Java programs. But it does NOT include compiler tools. 👉 If you only want to run Java programs → JRE is enough. ✅ JDK (Java Development Kit) JDK includes everything needed to write + compile + run Java programs. Contains: Compiler (javac) JRE (which includes JVM) Debugging & development tools 👉 If you want to develop Java programs → install JDK. 🧠 Quick Visual JDK = JRE + Compiler + Development Tools JRE = JVM + Libraries JVM = Runs Bytecode 💡 TL;DR JDK builds Java programs. JRE runs Java programs. JVM executes the bytecode. #Java #JDK #JRE #JVM #LearningInPublic #Day101

👋Hello Connections!! 🌟 Started My Advanced Java Learning Journey!!! I’m excited to share that I’ve officially started learning Advanced Java! 🚀 #Day1: Introduction to JDBC (Java Database Connectivity) Today, I learned about how Java applications communicate with databases using JDBC. It’s an API that allows Java programs to execute SQL queries and interact with databases seamlessly. 🧩 What is JDBC? → JDBC stands for Java Database Connectivity. → It Is an API which is used to connect Java applications with database application. → It consists of all the classes and interfaces required to connect with the databases. ⚠️Drawbacks Before JDBC: 1. No data security. 2. Difficult to insert and fetch data using files. 3. No relationship between data (causing redundancy and inconsistency). 4. Data stored in an unstructured format. 🧩 JDBC Drivers: → It Is a Software which is used to convert java application calls to database specific calls and vise versa. Architecture Of JDBC : Java Application ⬇️ JDBC API ⬇️ JDBC Driver Manager ⬇️ ⬇️ ⬇️ JDBC Driver JDBC Driver JDBC Driver ⬇️ ⬇️ ⬇️ Oracle DB SQL Server ODBC Data Server There are 4 types of JDBC drivers: 1️⃣ JDBC-ODBC Bridge Driver 2️⃣ Native API Driver 3️⃣ Network Protocol Driver 4️⃣ Thin Driver (Pure Java Driver) 📌 Steps to Connect with JDBC: 1️⃣ Loading The driver 2️⃣ Establish a Connection 3️⃣ Create a Statement 4️⃣ Execute a statement 5️⃣ Close the Connections I’m looking forward to learning more advanced topics and building real-time projects soon! 💻 #Java #AdvancedJava #LearningJourney #JDBC #Programming #Education #LinkedInLearning Guided by Levaku Lavanya mam, Saketh Kallepu sir, Uppugundla Sairam sir

Stepping into the world of JDBC with Java! Today, I wrote my very first program using JDBC (Java Database Connectivity) — a big step toward understanding how Java connects and interacts with databases. In this small project, I connected my Java program to a MySQL database and performed simple insert and retrieve operations using PreparedStatement. Here’s what I learned today How to connect Java to MySQL using JDBC The purpose of PreparedStatement (it’s safer and prevents SQL injection) How to insert data dynamically using user input How to fetch and display data using ResultSet Check out the video below.. #backend #java #webdevelopment #codebegun

⭐ What is a POJO class in Hibernate A POJO is a simple Java class with private fields and public getters/setters. It contains no special inheritance, annotations, or framework-specific code. Hibernate uses POJOs to map database tables and represent entities. It keeps the model layer clean, flexible, and easy to maintain. #POJO #JavaProgramming #HibernateEntities