How to realize the problem of character set Encoding, Decoding and garbled in java

This article will explain in detail how java implements character set encoding, decoding and garbled. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Encoding: character to byte, encode

Decoding: from bytes to characters, decode

String s = "cool"

Coding:

Byte [] data=s.getBytes (); / / Encoding

System.out.println (data.length); / / get the number of bytes

Encode to other character sets:

Data=s.getBytes ("utf8")

Decode:

Need: new String (bytes [] bytes,int offset,int length,String charsetName)

The parameters are: byte array, where to start (index), decoding length, character set mode

S=new String (data,0,data.length, "utf8") / / Decodes bytes into strings in utf8 mode

Garbled code:

1. Insufficient number of bytes (insufficient length length when decoding)

2. The character set is not uniform

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