Question

Let’s have a look at the following Java code.

public class Main
{
    public static void main(String[] args)
    {
        //\u000d System.out.println("It works fine.");
    }
}

In the preceding code snippet, the only line inside the main() method contains a unicode new line character, \u000d . It displays the specified message “It works fine.” even though that line is commented out. How does it work?

Answer 1

A little-known feature of the Java language is that Unicode escape sequences are processed anywhere in source code, before any other parsing.

That’s a real newline.

You can even write an entire Java program out of nothing but escape codes.