JAVA IO streaming 10 kinds of copy files examples __java

Class Iototal {public static void main (string[] args) {}//character input output stream one read public static void Total01 ()
        Throws IOException {FileReader fr = new FileReader ("1.txt");
        FileWriter FW = new FileWriter ("2.txt");
        int A;
        while ((A = Fr.read ())!=-1) {fw.write (a);
        } fr.close ();
    Fw.close (); }//character input output stream one character array read public static void Total02 () throws IOException {FileReader fr = new FileReader ("1.
        TXT ");
        FileWriter FW = new FileWriter ("2.txt");
        char[] arr = new char[1024 * 4];
        int Len;
        while (len = Fr.read (arr))!=-1) {fw.write (arr, 0, Len);
        } fw.close ();
    Fr.close (); }//High speed character input output stream one read public static void Total03 () throws IOException {FileReader fr = new FileReader ("1.
        TXT ");
        BufferedReader br = new BufferedReader (FR);
        FileWriter FW = new FileWriter ("2.txt"); BufferedWriter bw = new BufferedWriter (FW);
        int A;
        while ((A = Br.read ())!=-1) {bw.write (a);
        } br.close ();
    Bw.close (); }//High speed character input output stream one character array read public static void Total04 () throws IOException {FileReader fr = new FileReader ("
        1.txt ");
        BufferedReader br = new BufferedReader (FR);
        FileWriter FW = new FileWriter ("2.txt");
        BufferedWriter bw = new BufferedWriter (FW);
        char[] arr = new char[1024 * 4];
        int Len;
        while (len = Br.read (arr))!=-1) {bw.write (arr, 0, Len);
        } bw.close ();
    Br.close (); //Character buffer flow decoration method write-only unique methods public static void Total05 () throws IOException {BufferedReader br = new Buffe
        Redreader (New FileReader ("1.txt"));
        BufferedWriter bw = new BufferedWriter (New FileWriter ("2.txt"));
        String str = NULL;
            while (str = Br.readline ())!= null) {bw.write (str);
   Bw.newline ();     } br.close ();
    Bw.close (); }//Byte input/output stream one read public static void Total06 () throws IOException {fileinputstream fin = new fileinputs
        Tream ("1.txt");
        FileOutputStream fout = new FileOutputStream ("2.txt");
        int A;
        while ((A = Fin.read ())!=-1) {fout.write (a);
        } fin.close ();
    Fout.close (); }//Byte input output stream one byte array read public static void Total07 () throws IOException {fileinputstream fin = new Fileinpu
        Tstream ("1.txt");
        FileOutputStream fout = new FileOutputStream ("2.txt");
        byte[] arr = new BYTE[1024*4];
        int Len;
        while (len = Fin.read (arr))!=-1) {fout.write (Arr,0,len);
        } fin.close ();
    Fout.close (); }//high-speed byte input/output stream one read public static void Total08 () throws IOException {fileinputstream fin = new Fileinpu
        Tstream ("1.txt");
        Bufferedinputstream bin = new Bufferedinputstream (FIN); FIleoutputstream fout = new FileOutputStream ("2.txt");
        Bufferedoutputstream bout = new Bufferedoutputstream (fout);
        int A;
        while ((A = Bin.read ())!=-1) {bout.write (a);
        } bin.close ();
    Bout.close (); }//high-speed byte input-output stream read public static void total09 () of a byte array throws IOException {fileinputstream fin = new Filein
        Putstream ("1.txt");
        Bufferedinputstream bin = new Bufferedinputstream (FIN);
        FileOutputStream fout = new FileOutputStream ("2.txt");
        Bufferedoutputstream bout = new Bufferedoutputstream (fout);
        byte[] arr = new BYTE[1024*4];
        int Len;
        while (len = Bin.read (arr))!=-1) {bout.write (Arr,0,len);
        } bin.close ();
    Bout.close (); }//byte-> character-> bytes public static void Total10 () throws IOException {BufferedReader br = new Bufferedrea
    Der (New Bufferedinputstream (New FileInputStream ("1.txt")) InputStreamReader);    BufferedWriter bw = new BufferedWriter (new Bufferedoutputstream (New FileOutputStream ("1.txt", t
        Rue)));
        String line = null;
            while (line = Br.readline ())!= null) {System.out.println (line);
            Bw.write (line);
        Bw.newline ();
        } br.close ();

       Bw.close ();
        /* int len = 0;
        char[] arr = new CHAR[1024*4];
        while (len = Br.read (arr))!=-1) {bw.write (Arr,0,len);
        } bw.close (); Br.close (); */}}