Java Escape character \\|

http://blog.csdn.net/stewen_001/article/details/22871737

See a program

String t = "a| | b| | c| | D ";

string["temp = T.split ("\\|\\|"

System. out . println (Temp.length);

The main thing is: what does "\\|\\|" mean?

began a bit of a mask, and then a careful look to understand that the original is this:

\\ "\| In the escape is | \\||".

Deeper research:escape characters for Java

1. Eight binary escape sequence:\ + 1 To3 Guests5 number; Range' \000 ' ~ ' \377 ': null character
2.Unicode Escape Character:\u + four hexadecimal digits;0~65535 \u0000: null character
3. Special characters:3 x
\ ": Double quotation marks
\ ': Single quote
     \ \: Backslash
4. Control characters: 5
\ '   Single quote character
\\  backslash character
\r  carriage return
\n  line
\f  Go paper
\t  horizontal tab
\b  backspace
Point escape: ==> u002e
The escape of the dollar sign: $ ==> u0024
The escape of the symbol: ^ = = > u005e
Left curly brace escape: {==> u007b
Escape of opening parenthesis: [==> u005b
Escape of left parenthesis: Span lang= "en-us" > (escape of ==> u0028
Vertical bar: | ==> u007c
Escape of Right parenthesis: Asterisk: * ==> u002a
The escape of the plus sign: + ==> u002b
question mark escape: ==> u003f
Backslash escape:  ==> u005c

So \\| It can actually be written as:\\u007C

Java Escape character \\|