{"id":35089,"date":"2016-05-31T13:17:01","date_gmt":"2016-05-31T07:47:01","guid":{"rendered":"http:\/\/www.tothenew.com\/blog\/?p=35089"},"modified":"2016-05-31T13:17:01","modified_gmt":"2016-05-31T07:47:01","slug":"how-to-execute-java-code-within-java-comments","status":"publish","type":"post","link":"https:\/\/www.tothenew.com\/blog\/how-to-execute-java-code-within-java-comments\/","title":{"rendered":"How to execute Java code within Java comments"},"content":{"rendered":"

We all know Java comments are not visible to compiler and are not executable. But here we will see how a comment can be executed. To execute any comment we need to append a unicode as prefix to that comment and thats it. Now when you will run the code then this comment line will be executed.<\/p>\n

[java]
\npublic class CommentTest {
\n\tpublic static void main(String[] args)
\n\t{
\n\t\t\/\/ Following line will be executed and will produce output.
\n\t\t\/\/ \\u000d System.out.println("This is the output generated from commented line");
\n\t}
\n}
\n[\/java]<\/p>\n

Output:\r\n<\/strong>This is the output generated from commented line\r\n<\/pre>\n
Why this is happening? Following is the explanation taken from \u00a0Java Language Specification – Section 3.3<\/a><\/p>\n
The Java programming language specifies a standard way of transforming a program written in Unicode into ASCII that changes a program into a form that can be processed by ASCII-based tools. The transformation involves converting any Unicode escapes in the source text of the program to ASCII by adding an extra u<\/code> – for example, \\uxxxx<\/em><\/span><\/code>becomes \\uuxxxx<\/em><\/span><\/code> – while simultaneously converting non-ASCII characters in the source text to Unicode escapes containing a single u<\/code> each.<\/p>\n","protected":false},"excerpt":{"rendered":"
We all know Java comments are not visible to compiler and are not executable. But here we will see how a comment can be executed. To execute any comment we need to append a unicode as prefix to that comment and thats it. Now when you will run the code then this comment line will […]<\/p>\n","protected":false},"author":922,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":85,"footnotes":""},"categories":[446,1994,1],"tags":[4844,3405,3406],"class_list":["post-35089","post","type-post","status-publish","format-standard","hentry","category-java","category-software-development","category-technology","tag-java","tag-java-comments","tag-unicode"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t