Understanding String.length() with \n

[AcousticBruce]

        String a = "37107287\n";
        String b = "37107287";

        System.out.println(a.length());
        System.out.println(b.length());

Why does \n add to the length of a string?
Is there a way find the length without /n added to it?

[travishein]

the length considers all characters in the string. \n is a character, it just happens to be not printable and have special meaning to mean end of line

if you wanted to get the length excluding the \n, you could do

 String a = "37107287\n";
 System.out.println(a.trim().length());

Where trim removes leading and following whitespace characters, which would also include spaces and tabs.

Or in a more general case, if the string contains \n characters within it, or just exclude \n characters, use replaceAll to remove \n characters then take the length,

 System.out.println(a.replaceAll("\\n","").length());

where we need to escape \ in a string.

[/code]

[eRaaaa]

Why not? oO
Its a char in the char-Array of the string. it must be stored somewhere or?

System.out.println(a.replace("\n", "").length()); or in your example
System.out.println(a.trim().length());

edit: @travishein : why regex? ;/