Java kernel is unicode,as well as class files.However,most multimedias use stream bytes,including the way of their storage.So java ought to convert these stream bytes.char is unicode,while byte is byte.byte/char convertion function is in sun.io.class ByteToCharConverter could tell you which convertor you are using.two usual static functions are

Packet : 395919newsplayer.zip filelist
NewsPlayer/
NewsPlayer/NewsPlayer/
NewsPlayer/NewsPlayer.ncb
NewsPlayer/NewsPlayer.sln
NewsPlayer/NewsPlayer.suo
NewsPlayer/NewsPlayer/Debug/
NewsPlayer/NewsPlayer/Debug/BuildLog.htm
NewsPlayer/NewsPlayer/Debug/NewsDoc.obj
NewsPlayer/NewsPlayer/Debug/NewsPlayer.exe
NewsPlayer/NewsPlayer/Debug/NewsPlayer.ilk
NewsPlayer/NewsPlayer/Debug/NewsPlayer.obj
NewsPlayer/NewsPlayer/Debug/NewsPlayer.pch
NewsPlayer/NewsPlayer/Debug/NewsPlayer.pdb
NewsPlayer/NewsPlayer/Debug/NewsPlayer.res
NewsPlayer/NewsPlayer/Debug/NewsPlayerDlg.obj
NewsPlayer/NewsPlayer/Debug/stdafx.obj
NewsPlayer/NewsPlayer/Debug/vc70.idb
NewsPlayer/NewsPlayer/Debug/vc70.pdb
NewsPlayer/NewsPlayer/news.txt
NewsPlayer/NewsPlayer/news2.txt
NewsPlayer/NewsPlayer/NewsDoc.cpp
NewsPlayer/NewsPlayer/NewsDoc.h
NewsPlayer/NewsPlayer/NewsPlayer.aps
NewsPlayer/NewsPlayer/NewsPlayer.cpp
NewsPlayer/NewsPlayer/NewsPlayer.h
NewsPlayer/NewsPlayer/NewsPlayer.rc
NewsPlayer/NewsPlayer/NewsPlayer.vcproj
NewsPlayer/NewsPlayer/NewsPlayerDlg.cpp
NewsPlayer/NewsPlayer/NewsPlayerDlg.h
NewsPlayer/NewsPlayer/ReadMe.txt
NewsPlayer/NewsPlayer/res/
NewsPlayer/NewsPlayer/Resource.h
NewsPlayer/NewsPlayer/res/Build.ico
NewsPlayer/NewsPlayer/res/ico00001.ico
NewsPlayer/NewsPlayer/res/ico00002.ico
NewsPlayer/NewsPlayer/res/ico00003.ico
NewsPlayer/NewsPlayer/res/icon1.ico
NewsPlayer/NewsPlayer/res/icon2.ico
NewsPlayer/NewsPlayer/res/NewsPlayer.ico
NewsPlayer/NewsPlayer/res/NewsPlayer.manifest
NewsPlayer/NewsPlayer/res/NewsPlayer.rc2
NewsPlayer/NewsPlayer/stdafx.cpp
NewsPlayer/NewsPlayer/stdafx.h

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