Generic
public class Demo {
  private static final String CONSTANT = "String";
  private Object o;
  /**
   * Creates a new demo.
   * @param o The object to demonstrate.
   */
  public Demo(Object o) {
    this.o = o;
    String s = CONSTANT + "Other";
    int i = 123;
  }
  public static void main(String[] args) {
    Demo demo = new Demo();
  }
}
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<!-- Sample comment -->
<HTML>
<head>
<title>IntelliJ IDEA</title>
</head>
<body>
  <h1>IntelliJ IDEA</h1>
  <p><br><b><IMG border=0 height=12 src="images/hg.gif" width=18 >
    Hello World! · Α </b><br><br>
</body>
</html>
Ruby
require "test"
CONSTANT = 777
# Sample comment
class Module::Class
  include Testcase
  render :action => 'foo'
  def foo(parameter)
    @parameter = parameter
  end
  local_var = eval <<-"FOO";\
  printIndex "Hello world!"
  And now this is heredoc!
  printIndex "Hello world again!"
  FOO
  foo("#{$GLOBAL_TIME >> $`} is \Z sample \"string\"" * 777);
  if ($1 =~ /sample regular expression/ni) then
  begin
    puts %W(sample words), CONSTANT, :fooo;
    do_something :action => "action"
  end
  expect{counter[0]}.to_be eq 1
  1.upto(@@n) do |index| printIndex 'Hello' + index end
  \\\\\\\\\
  end
end
