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importj**a.io.BufferedReadµÍer;
importj**a.io.File;
importj**a.iÔìͼ¸÷¼ÃÖη¶ÆÚ¶ÁµÆ½ÓÁÏo.FileReader;
Ⱦ¸ü¼þimportj**a.io.FileWriteѧÀäËûÕÆ¹ÅÉÆ¿îr;
publicclassShuffle1{
pÅ©¼äÈ¾ÑØÑªÖ±ÑÝʹλublicstaticvoidmain(String[]args)throÖ÷³öÍêЧ¾§wsException{
//Ô´Îļþ
Filesrc=newFile("D:\\a.txt");
//Ä¿±êÎļþ
Filedest=newFile("D:\\b.txt");
//¶ÁÈ¡Á÷
FileReaderfr=newFileRÕÒÄï·¸eader(src);
BufferedReaderbr=newBufferÕ÷ÏúºâedReader(fr);
//дÈëÁ÷
FileWriterfw=newFileWriter(dest);
while(br.ready()){
Stringline=br.readLine();
//Ìæ»»
line³Î÷ÄÑ×ø=line.replaceAÌì¿Æ¾àll("a","b");
//дÈë
fw.write(line+"\¹Ì¿ÍÔÙÖ¯Ê×¶øÂèÔìr\n");
}
fw.close();
br.close();
fr.close();
//Ô´Îļþɾ³ý
src.Ȩ¼þ¾¶·ÀÂÒ¹**ÎΪÓÅdelete();
//Ä¿±êÎļþ¸ÄÃûΪԴÎļþ
dest.renameTo(src)½ÏÏÂÍÁ¸ÄÖ÷;
}
}