1. // - It is called as single Line comment - Comments only one line Ex: //Java Essential Etatements 2. /* */ - It is called as multiline comment ------- ----------------------- - comments single or multiple lines Ex: /* class is the mandatory BPE main is initial point of class execution */ 3. /** */ - It is called as Document comment - Used to provide doumentation with some requited annotatted tags Ex: /** * This class is developed to handle helper logic * * @author = HariKrishna * @Since = rt 1.0 */