Java supports three types of comments,
* A multiple-line comment (also known as a multiline comment) includes anything starting from the symbol /* until the symbol */
* A single-line comment begins with two slashes. Anything you type after that on the same line is ignored by the compiler.
* From /** to */. This comment is similar to a multiline comment except it starts with /**. This is a documentation comment. The JDK javadoc tool uses documentation comment to automatically generate documentation.