How does Java achieve platform independence?

• A. By using the Java Development Kit (JDK)
• B. Through machine-specific bytecode generation
• C. By employing the Java Virtual Machine (JVM)
• D. By utilizing C++ as an intermediary

Answer: (C)

Java achieves platform independence primarily through the use of the Java Virtual Machine (JVM). When Java source code is compiled, it is transformed into an intermediate form known as bytecode, rather than machine-specific code. This bytecode is platform-independent, allowing it to run on any system that has a Java Virtual Machine. Each JVM interprets this bytecode and translates it into the appropriate machine code for the underlying platform. As a result, developers can write Java code once and run it anywhere (the "write once, run anywhere" principle), which is a key feature of Java's design.

The Java Development Kit (JDK) is essential for developing and compiling Java applications, but it does not directly provide platform independence; rather, it is the tools within the JDK that utilize the JVM for that purpose. Machine-specific bytecode generation contradicts the concept of platform independence since it would tie the generated code to a specific architecture. Lastly, utilizing C++ as an intermediary does not apply here, as Java does not require C++ to achieve platform independence; the JVM serves this function independently, allowing Java to maintain its cross-platform compatibility.