Saeed Zarinfam’s Post

In this #JVMLS session, Joe Darcy discusses the aspects needed to provide full support for new numeric types in the Java platform and presents trade-offs on different paths to provide that support. https://lnkd.in/eUcdnwFj

Hey Java! Let's talk today about #42 Interfaces, how to declare, how interfaces can extends interfaces, the implicit modifiers of methods and variables, and all the interfaces methods - default, static, private and private static. A lot to see!

Recommanded to watch Interesting talk about dart hooks, that are comming this november, which will effortlessly allows us to build plugins from C and java libraries, as example in the video he used sqlite.c library and integrated only one command using ffigen, and jnigen for java https://lnkd.in/dBfardav

⚡𝐒𝐰𝐢𝐭𝐜𝐡 𝐂𝐚𝐬𝐞 𝐢𝐧 𝐉𝐚𝐯𝐚 → The switch case in java is a replacement to the infamous if-else ladder. → It is evaluated only for once. → The result is compared with each case value. → If their is a match, the matching block of code runs. → The break statement stops the switch after the matching case has run. → The default statement runs if there is no match. 𝐆𝐈𝐓𝐇𝐔𝐁:- https://lnkd.in/d8DpSK35

Today I revisited the basics of Java with a classic Hello World — but this time using Swing! package com.example.helloworld; import javax.swing.*; public class SwingIntoHelloWorld { public static void main(String[] args) { JOptionPane.showInputDialog("Hello World!"); } }

This image explains the Java program execution process in simple steps. First, the source code (HelloWorld.java) is written by the developer. The Java compiler then converts this code into bytecode (HelloWorld.class), which is platform-independent. The bytecode is executed by the Java Virtual Machine (JVM), which translates it into machine code for the specific device. Finally, the program runs on the computer, demonstrating Java’s "write once, run anywhere" capability, ensuring portability across different systems.

How to test the Java web Calculator application by using sonarqube with step by step process in detail video Here is the Link: https://lnkd.in/gdXgiXr8

🧩 Day 20: Java Collections – Map Interface 🔹 Topics Covered: 1. Introduction to Map Interface Unlike List and Set, a Map stores data as key–value pairs. Each key is unique, but values can be duplicated. Common methods: put(), get(), remove(), containsKey(), containsValue(), keySet(), values(), entrySet()

While getting into Java, I learned how its core parts work together: JVM, JRE, and JDK. • The JVM acts like a virtual machine that understands Java bytecode and lets programs run the same way on different platforms. • The JRE is a package that contains the JVM plus the libraries required to execute Java applications. • The JDK is the full development kit, which not only includes the JRE but also the compiler and extra tools needed for coding and building projects. In short: JVM makes Java portable, JRE allows applications to run, and JDK gives developers everything to create them. This breakdown really helped me connect the dots about how Java applications are built and executed.

Writing conditional logic is smoother with Pattern Matching for Switch in Java 21. Eliminates boilerplate instanceof checks. Safer type handling → compiler ensures exhaustiveness. Improves readability for business logic. One more way Java is helping us write concise and maintainable code. Who else is enjoying this upgrade? #Java21 #PatternMatching #CodeQuality #SoftwareDevelopment