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File f=new File("readFile")； RandomAccessFile raF=newRandomAeeess Filel(； RandomAccessFile raF=new RandomAcccssFile(d:/mydir/File3.txt，"rw")； RandomAccessFile raF=new RandomAccessFile("readwriteFile"，"rw")； RandomAccessFile raF=new RandomAccessFite("readwriteFile"，r
RandomAccessFile类可以随机访问文件 RandomAccessFile类实现DataInput和DataOutput接口 RandomAccessFile类不能写文件 RandomAccessFile类兼有输入输出功能
File f=new File("readFile"); RandomAccessFile raF=new RandomAccessFile(; RandomAccessFile raF=new RandomAccessFile(d:/mydir/File3.txt,"rw"); RandomAccessFile raF=new RandomAccessFile("readwriteFile","rw"); RandomAccessFile raF=new RandomAceessFile("readwriteFile" ,r;
RandomAccessFileC"ch1/fildat", "read") RandomAccessFile("r", "ch1/fildat") RandomAccessFile("ch1/fildat" , "r") RandomAecessFile("read", "ch1/fildat")
File f=new File("readFile")；
RandomAccessFile raF=new RandomAccessFile(f)； RandomAccessFile raF=new RandomAccessFile(d://mydir//File3.txt,"rw")； RandomAccessFile raF=new RandomAccessFile("readwriteFile","rw")； RandomAccessFile raF=new RandomAccessFile("readwriteFile"，rw)；
File f=new File("readFile");
RandomAccessFile raF=new RandomAccessFile(f); RandomAccessFile raF=new RandomAccessFile(d:/mydir/File3.txt,"rw"); RandomAccessFile raF=new RandomAccessFile("readwriteFile","rw"); RandomAccessFile raF=new RandomAceessFile("readwriteFile" ,rw);
FileInputStream in=new FileInputStream("fildat")；iskip(9);int c=iread( )； FileInputStream in=new FileInputStream("fildat")；iskip(10);int c=iread( )； FileInputStream in=new FileInputStream("fildat")；int c=iread( )； RandomAccessFile in=new RandomAccessFile("fildat")；iskip(9)；int c=ireadByte( )；
RandomAccessFile FileReader FileWriter FilelnputStream
File f=new File("readFile")； RandomAccessFile raF=new RandomAccessFile(； RandomAccessFile raF=new RandomAccessFile(d://mydir//File3.txt,"rw")； RandomAccessFile raF=new RandomAccessFile("readwriteFile","rw")； RandomAccessFile raF=new RandomAccessFile("readwriteFile"，r；
File f=new File("readFile")； RandomAccessFile raF=newRandomAeeess Filel(f)；B) RandomAccessFile raF=new RandomAcccssFile(d:/mydir/File3.txt，"rw")； RandomAccessFile raF=new RandomAccessFile("readwriteFile"，"rw")； RandomAccessFile raF=new RandomAccessFite("readwriteFile"，rw)
DataInput DataOutputStream RandomAccessFile FileNameFiher
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