compiler construction - what is difference between single line and multiple line comments in java? -

I just want to know what is the difference between single row in multiple line comments in the Java programming language.

Multiple line comments

  / * * line 1 * this line2 / *   
 one line comment  
  // this is line 1 / this is row 2   
, so what would be the difference between these two comments in terms of program translation from  .java  . Class  (or in other words why we need a line comment, when we already have multiple row comments). I already know that comments are removed by compilers in the  Lexical Analyzer  phase.  
  
 
 
 This is just a feature for the programmer, for example, I call each line as  // I want to prefix with  when I am writing paragraphs of comments. In addition,  / * * /  allows you to comment inline,  
  System.out.println (2 + / * inline comment * / 2 );