// sometimes I believe compiler ignores all my comments

try {

}
catch (SQLException ex) {
    // Basically, without saying too much, you're screwed. Royally and totally.
}
catch(Exception ex)
{
    //If you thought you were screwed before, boy have I news for you!!!
}

// TODO - Comment this function

//说明:!!待办事项

/* Hammer Time! */

我不知道为什么，也不知道他在写代码时是否穿着防撕裂尼龙降落伞裤

 // WARNING!!!
 // Very perversive code ahead!

... about a 20 lines of "very perversive" code ...

// Now you can call your grandmother back. ;)