Java file operations: read and write by row

Java file operations: read and write by row

 

File operations are the most common part in any language, and Java is no exception. This section mainly introduces the operations on reading files and writing files by row.

 

ImportJava. Io. bufferedreader;

ImportJava. Io. bufferedwriter;

ImportJava. Io. filenotfoundexception;

ImportJava. Io. filereader;

ImportJava. Io. filewriter;

ImportJava. Io. ioexception;

 

 

Public ClassJavafile {

Public Static VoidMain (string [] ARGs ){

Try{

// Read File Content from File

Stringbuffer sb =NewStringbuffer ("");

Filereader reader =NewFilereader ("C: // test.txt ");

Bufferedreader BR =NewBufferedreader (Reader );

String STR =Null;

While(STR = Br. Readline ())! =Null){

SB. append (STR + "/N ");

System.Out. Println (STR );

}

BR. Close ();

Reader. Close ();

// Write string to file

Filewriter writer =NewFilewriter ("C: // test2.txt ");

Bufferedwriter BW =NewBufferedwriter (writer );

Bw. Write (sb. tostring ());

Bw. Close ();

Writer. Close ();

}

Catch(Filenotfoundexception e ){

E. printstacktrace ();

}

Catch(Ioexception e ){

E. printstacktrace ();

}

}

 

}