Simple implementation of file segmentation and merge with Java

The main application of IO's randomaccessfile (I heard that the breakpoint is also implemented)

Import java.io. *;

Class fen {

String filename;

Int size;

Fen (string filename, string size) {

THIS.FILENAME = filename;

THIS.SIZE = Integer.Parseint (size) * 1024;

}

Public void cut () throws exception {

INT maxx = 0;

File infile = new file (filename);

INT fileLength = (int) infile.length (); // Get the size of the file

INT value; // Number of points to be divided

RandomaccessFile Inn = New RandomaccessFile (Infile, "R"); // Open the file to be split

Value = fileLength / size;

INT i = 0;

INT j = 0;

/ / Output files according to the number of points to be divided

For (; j

File outfile = new file (Infile.getName () J "ZZII");

RandomaccessFile Outt = New RandomaccessFile (Outfile, "RW");

Maxx = size;

For (; i

Outt.write (Inn.Read ());

}

Outt.close ();

}

File outfile = new file (Infile.getName () J "ZZII");

RandomaccessFile Outt = New RandomaccessFile (Outfile, "RW");

For (; i

Outt.write (Inn.Read ());

}

Outt.close ();

Inn.Close ();

}

}

Class HE {

String filename;

String filtername;

HE (String FileName, String Filtername) {

THIS.FILENAME = filename;

This.Filtername = filtername;

}

Public void unite () throws exception {

String [] TT;

File infile = new file ("."); // file in the current directory

File outfile = new file (filename); // get the output name

RandomaccessFile Outt = New RandomaccessFile (Outfile, "RW");

/ / A file name that meets the requirements

Tt = infile.list (new filenamefilter () {

Public Boolean Accept (File Dir, String Name) {

String rr = new file (name) .tostring ();

Return rr.endswith (filtername);

}

});

// Print the name of the file

For (INT i = 0; i

System.out.println (TT [i]);

}

// Open all files to write to a file for (int i = 0; i

Infile = new file (tt [i]);

RandomaccessFile Inn = New RandomaccessFile (Infile, "R");

INT C;

While ((c = in.read ())! = - 1)

Outt.write (c);

}

Outt.close ();

}

}

Public class test {

Public static void main (final string [] args "throws exception {

IF (args.length == 0) {

PRINT ();

Return;

}

IF (Args [0]. Equals ("- c")) {

Fen cutt = new fen (args [1], args [2]);

Cutt.cut ();

}

Else IF (Args [0]. Equals ("- r")) {

He He He = New He (Args [1], Args [2]);

Hee.Unite ();

}

Else

PRINT ();

}

Public static void print () {

System.out.println ("USAGE: / N: Java Test -c File1 Size") ");

}

}