Final answer:
The software that allows the understanding and execution of bytecode by a Java interpreter is called JVM. It acts as a platform-independent runtime environment for Java applications.
Step-by-step explanation:
The software that allows the understanding and execution of bytecode by a Java interpreter is called Java Virtual Machine (JVM). The JVM is responsible for interpreting the bytecode and executing it on the computer system. It acts as a platform-independent runtime environment for Java applications.
When a Java program is compiled, it is translated into bytecode, which is a set of instructions understood by the JVM. The JVM then interprets and executes these instructions, allowing the Java program to run on different operating systems and hardware platforms.
Examples of JVM implementations include Oracle's HotSpot JVM, OpenJDK, and IBM J9.