How do you write a basic Hello World program in Java?

"26. Basics\n\n1 package unl.cse;\n\n2 3 //package declaration\n\n2 3 //imports would go here\n\n4 5 /**\n\n6 * A basic hello world program in Java\n\n7 */\n\n8 public class HelloWorld {\n\n10 //static main method\n\n11 public static void main(String args[]) {\n\n12 System.out.println(\"Hello World!\");\n\n13 }\n\n15 }\n\nCode Sample 26.1.: Hello World Program in Java\n\n26.1. Getting Started: Hello World\n\nThe hallmark of an introduction to a new programming language is the Hello World! program. It consists of a simple program whose only purpose is to print out the message “Hello World!” to the user. The simplicity of the program allows the focus to be on the basic syntax of the language. It is also typically used to ensure that your development environment, compiler, runtime environment, etc. are functioning properly with a minimal example. A basic Hello World! program in Java can be found in Code Sample"