/ **被称为文档注释。javadoc工具在为程序代码创建文档时使用它。
/**
* This is a documentation comment.
* This is my first Java program.
* This will print 'Hello World' as the output
* This is an example of multi-line comments.
*/
public class MyFirstJavaProgram {
public static void main(String[] args) {
System.out.println("Hello World");
}
}