Java File - Open A File And Write To It

Question

I know we are supposed to add a snipit of code to our questions  but I am seriously dumbfounded and can t wrap my head or find any examples to follow from    Basically I want to open file C  A txt   which already has contents in it  and write a string at the end  Basically like this    File A txt contains    John Bob Larry   I want to open it and write Sue at the end so the file now contains    John Bob Larry Sue   Sorry for no code example  my brain is dead this morning

User · Accepted Answer

Please Search Google given to the world by Larry Page and Sergey Brin   BufferedWriter out   null   try       FileWriter fstream   new FileWriter  out txt   true     true tells to append data      out   new BufferedWriter fstream       out write   nsue       catch  IOException e        System err println  Error      e getMessage        finally       if out    null            out close

User · Answer

To expand upon Mr  Eels comment  you can do it like this       File file   new File  C   A txt        FileWriter writer      try           writer   new FileWriter file  true           PrintWriter printer   new PrintWriter writer           printer append  Sue            printer close          catch  IOException e               TODO Auto-generated catch block         e printStackTrace            Don t say we ain t good to ya

User · Answer

Suggestions    Create a File object that refers to the already existing file on disk  Use a FileWriter object  and use the constructor that takes the File object and a boolean  the latter if true would allow appending text into the File if it exists   Then initialize a PrintWriter passing in the FileWriter into its constructor   Then call println      on your PrintWriter  writing your new text into the file  As always  close your resources  the PrintWriter  when you are done with it  As always  don t ignore exceptions but rather catch and handle them  The close   of the PrintWriter should be in the try s finally block    e g      PrintWriter pw   null     try        File file   new File  fubars txt         FileWriter fw   new FileWriter file  true        pw   new PrintWriter fw        pw println  Fubars rule         catch  IOException e         e printStackTrace        finally        if  pw    null            pw close                 Easy  no

[java] Java File - Open A File And Write To It

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