The JVM has two primary functions: to allow Java programs to run on any device or operating system (known as the “write once, run anywhere” principle), and to manage and optimize program memory.

What is Remote Method Invocation (RMI)? Remote Method Invocation (RMI) is an application programming interface in the Java programming language and development environment.It allows objects on one ...

In Java, there are many, many places in which a piece of code needs a single method implementation. And there are many interfaces in the Java API where only a single method needs to be implemented.