Portability in Java using Bytecode and JVM
Java's portability is powered by two key components: bytecode and the Java Virtual Machine (JVM). When you compile a Java program, it's not translated directly into machine code but into bytecode, a platform-independent format. This bytecode is then executed by the JVM, which translates it into machine code specific to the underlying hardware and operating system. This unique architecture allows Java programs to run unchanged on any device or platform with a compatible JVM, making Java truly 'write once, run anywhere.