Lisa Notes

Mar 12, 2026 · Fundamentals

Java Language and Platform: A Beginner’s Guide to Write Once, Run Anywhere

The article explains how Java source files are compiled into bytecode, run on the JVM across Windows, Linux, macOS, and Solaris, and describes the two parts of the Java platform—the virtual machine and the API—highlighting why Java’s “write once, run anywhere” model suits distributed, object‑oriented development.