Java Fundamentals Hardening IO Stream Note 31: Causes and formats for the conversion stream to occur

1. Because the byte stream operation Chinese is not particularly convenient , so Java provides the conversion stream .

Character stream = byte stream + encoding table

2. Coding table

A table consisting of characters and their corresponding values

Common Coding tables:

Ascii/unicode Character Set

• Iso-8859-1

• gb2312/gbk/gb18030

• BIG5

• UTF-8

3. Encoding and decoding problems in the String class:

(1) Using construction method in string: ( decoding )

String(byte[] bytes, String charsetName)
Constructs a new one by using the specified charset to decode the specified byte array String .

(2) Function method used in string: ( coded )

byte[]

getBytes(String charsetName) Encodes this into a byte sequence using the specified character set String and stores the result in a new byte array.

Java Fundamentals Hardening IO Stream Note 31: Causes and formats for the conversion stream to occur