Java Read and write files

Read the file

 packagetool;Importjava.io.BufferedReader;Importjava.io.BufferedWriter;Importjava.io.File;Importjava.io.FileOutputStream;Importjava.io.FileReader;Importjava.io.IOException;Importjava.io.OutputStreamWriter; public classReadFile { public Static voidMain (string[] Args)throwsIOException {File F=NewFile ("f:/mernis/mernis.txt"); intCount=0; if(f.exists ()) {filereader Read=NewFileReader (f); BufferedReader Buff=NewBufferedReader (read); BooleanIsend=false; intI=0;  while(!Isend)                    {String line; I++; //for (int i = 0; i <1000; i++) {//}                    Try{ line=Buff.readline (); if(line==NULL) {isend=true; }                        Else                            {                                //System.out.println (line);                                    if(i>=1&&i<=100)                                     { System.out.println (i+"##"+line ); } Count++; }                    } Catch(Exception E) {//TODO auto-generated Catch blockE.printstacktrace (); }} System.out.println ("file total" +count+ "line");                             Buff.close (); }         Else{System.out.println ("the file you entered does not exist, please use it correctly:"); }              }}

Readfile.java

Read and write files

 packagetool;Importjava.io.BufferedReader;Importjava.io.BufferedWriter;Importjava.io.File;Importjava.io.FileOutputStream;Importjava.io.FileReader;Importjava.io.IOException;Importjava.io.OutputStreamWriter; public classTransferfile { public Static voidMain (string[] Args)throwsIOException {File F=NewFile ("f:/mernis/data_dump.sql"); File FileWrite=NewFile ("f:/mernis/mernis.txt"); intCount=0; if(f.exists ()) {filereader Read=NewFileReader (f); BufferedReader Buff=NewBufferedReader (read); BufferedWriter out=NewBufferedWriter (NewOutputStreamWriter (NewFileOutputStream (filewrite,true))); BooleanIsend=false; intI=0;  while(!Isend)                    {String line; I++; //for (int i = 0; i <1000; i++) {//}                    Try{ line=Buff.readline (); if(line==NULL) {isend=true; }                        Else                            {                                //System.out.println (line);                                    if(i>=76&&i<=49611784) {out.write ( line+ "\ r \ n"); //System.out.println (i); //System.out.println (i+ "# #" +line);} Count++; }                    } Catch(Exception E) {//TODO auto-generated Catch blockE.printstacktrace (); }} System.out.println ("file total" +count+ "line");                   Buff.close ();                             Out.close (); }         Else{System.out.println ("the file you entered does not exist, please use it correctly:"); }              }}

Transferfile.java

Java read-write file