add comments to java code to show up in swagger ui code example

Example 1: how to show rext in php

<?php
  $hello = "HELO";
  echo "hello";
	if (youwantvar = on) {
    echo $hello
    }
  
  
  ?>

Example 2: make a commet in java

// Demo types of comments

/* This shows
   that the comment
   can be muilti line */
System.out.println("Hello"); // Inline comment
// This is a single line comment