Final answer:
Java programs are executed on the Java Virtual Machine (JVM).
Step-by-step explanation:
Java does not execute instructions on a computer directly, but rather on the Java Virtual Machine (JVM).
The JVM is a software that simulates a computer inside a computer and provides an environment for Java programs to run. It translates the Java bytecode (compiled code) into machine code that can be executed by the underlying operating system and hardware.
By running on the JVM, Java programs can be platform-independent, meaning they can run on any device or operating system that has a compatible JVM installed.