It is customary to have the first program in a language be a simple program that merely displays the words, Hello World, on the screen or printer. In light of that, we have that exact program in a code machine named Hello.
Consider the following links:
a) More about the class
b) More about the main function
c) More about the System.out.println statement
or
p) or jvm to Java Virtual Machine
r) or return to Java Tools
x) or out to Java History and Overview