This word is so common in programming world, even so i don’t know why must hello world, not the other word. But our main topic is not how common this word in programming world, but reason why i created this blog. First reason, i create this blog is i have so many time without doing nothing in office. Second reason is eventually i interested in blogging after i have new way to celebrate day, and i think i need diary to record event in my life. And Tada, here i am now.