??/*
????2????*?Copyright?（c）?1995?2000?Oracle?and/or?its?affiliates.?All?rights?reserved.
????3????*?DO?NOT?ALTER?OR?REMOVE?COPYRIGHT?NOTICES?OR?THIS?FILE?HEADER.
????4????*
????5????*?This?code?is?free?software;?you?can?redistribute?it?and/or?modify?it
????6????*?under?the?terms?of?the?GNU?General?Public?License?version?2?only?as
????7????*?published?by?the?Free?Software?Foundation.??Oracle?designates?this
????8????*?particular?file?as?subject?to?the?“Classpath“?exception?as?provided
????9????*?by?Oracle?in?the?LICENSE?file?that?accompanied?this?code.
???10????*
???11????*?This?code?is?distributed?in?the?hope?that?it?will?be?useful?but?WITHOUT
???12????*?ANY?WARRANTY;?without?even?the?implied?warranty?of?MERCHANTABILITY?or
???13????*?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the?GNU?General?Public?License
???14????*?version?2?for?more?details?（a?copy?is?included?in?the?LICENSE?file?that
???15????*?accompanied?this?code）.
???16????*
???17????*?You?should?have?received?a?copy?of?the?GNU?General?Public?License?version
???18????*?2?along?with?this?work;?if?not?write?to?the?Free?Software?Foundation
???19????*?Inc.?51?Franklin?St?Fifth?Floor?Boston?MA?02110-1301?USA.
???20????*
???21????*?Please?contact?Oracle?500?Oracle?Parkway?Redwood?Shores?CA?94065?USA
???22????*?or?visit?www.oracle.com?if?you?need?additional?information?or?have?any
???23????*?questions.
???24????*/
package?sun.misc;

?import?java.io.OutputStream;
import?java.io.PushbackInputStream;
?import?java.io.PrintStream;

?/**
???32????*?This?class?implements?a?base64?Character?decoder?as?specified?in?RFC1521.
???33????*
???34????*?This?RFC?is?part?of?the?MIME?specification?which?is?published?by?the
???35????*?Internet?Engineering?Task?Force?（IETF）.?Unlike?some?other?encoding
???36????*?schemes?there?is?nothing?in?this?encoding?that?tells?the?decoder
???37????*?where?a?buffer?starts?or?stops?so?to?use?it?you?will?need?to?isolate
???38????*?your?encoded?data?into?a?single?chunk?and?then?feed?them?this?decoder.
???39????*?The?simplest?way?to?do?that?is?to?read?all?of?the?encoded?data?into?a
???40????*?string?and?then?use:
???41????*?

???42????*??????byte????mydata[];
???43????*??????base64Decoder?base64?=?new?base64Decoder（）;
???44????*
???45????*??????mydata?=?base64.decodeBuffer（bufferString）;
???46????*?

???47????*?This?will?decode?the?String?in?bufferString?and?give?you?an?array
???48????*?of?bytes?in?the?array?myData.
???49????*
???50????*?On?errors?this?class?throws?a?CEFormatException?with?the?following?detail
???51????*?strings:
???52????*?

???53????*????“base64Decoder:?Not?enough?bytes?for?an?atom.“
???54????*?

???55????*
???56????*?@author??????Chuck?McManis
???57????*?@see?????????CharacterEncoder
???58????*?@see?????????base64Decoder
???59????*/
?
??public?class?base64Decoder?extends?CharacterDecoder?{
?
/**?This?class?has?4?bytes?per?atom?*/
?protected?int?bytesPerAtom（

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????7736??2015-02-09?10:55??base64Encoder.jar
?????目錄???????????0??2015-02-09?10:57??sun\
?????目錄???????????0??2015-02-09?10:57??sun\misc\
?????文件????????6094??2015-02-09?10:51??sun\misc\base64Decoder.java
?????文件????????4175??2015-02-09?10:52??sun\misc\base64Encoder.java
?????文件?????????168??2015-02-09?10:52??sun\misc\CEFormatException.java
?????文件?????????112??2015-02-09?10:52??sun\misc\CEStreamExhausted.java
?????文件????????8647??2015-02-09?10:52??sun\misc\CharacterDecoder.java
?????文件???????11941??2015-02-09?10:52??sun\misc\CharacterEncoder.java