Create intermediate folders if one doesn't exist

Question

I am trying to create a folder for each username a user logs in as. Currently I have

private String destination = "C:/Users/Richard/printing~subversion/fileupload/web/WEB-INF/uploaded/"; // main location for uploads File theFile = new File(destination + username); // will create a sub folder for each user  

but the File theFile bit does not create a new folder for the username. How would I do this ?

I have tried

private String destination;  public void File()  {     destination = "C:/Users/Richard/printing~subversion/fileupload/web/WEB-INF/uploaded/"; // main location for uploads     File theFile = new File(destination + username); // will create a sub folder for each user (currently does not work, below hopefully is a solution)      theFile.mkdirs(); } 

but I need to use the destination later on in the program, how would I do that?

This is my whole code:

/*  * To change this template, choose Tools | Templates  * and open the template in the editor.  */ package richard.fileupload;  import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import javax.annotation.PostConstruct; import javax.faces.application.FacesMessage; import javax.faces.context.FacesContext; import javax.faces.event.ActionEvent; import javax.faces.application.FacesMessage; import javax.faces.bean.ManagedBean; import javax.faces.bean.ViewScoped; import javax.faces.context.FacesContext; import java.io.File; import org.primefaces.event.FileUploadEvent;  @ViewScoped @ManagedBean(name = "fileUploadController") public class FileUploadController {      /*      public void handleFileUpload(FileUploadEvent event) {      System.out.println("called");      FacesMessage msg = new FacesMessage("Succesful", event.getFile().getFileName() + " is uploaded.");      FacesContext.getCurrentInstance().addMessage(null, msg);      }      }      */     private String username;     private String destination;      @PostConstruct     public void init() {         System.out.println("called get username");         username = FacesContext.getCurrentInstance().getExternalContext().getRemoteUser();     }      public void File() {     destination = "C:/Users/Richard/printing~subversion/fileupload/web/WEB-INF/uploaded/"; // main location for uploads     File theFile = new File(destination + username); // will create a sub folder for each user (currently does not work, below hopefully is a solution)      theFile.mkdirs(); }      public File getDirectory(String destination, String username) {         System.out.println("called get directory");         // currently not working, is not calling the username or destination          //set the user directory from the destinarion and the logged user name         File directory = new File(destination, username);         //check if the location exists         if (!directory.exists()) {             //let's try to create it             try {                 directory.mkdir();             } catch (SecurityException secEx) {                 //handle the exception                 secEx.printStackTrace(System.out);                 directory = null;             }         }         return directory;     }      public void handleFileUpload(FileUploadEvent event) {         System.out.println("called handle file");         FacesMessage msg = new FacesMessage("Succesful", event.getFile().getFileName() + " is uploaded."); //Displays to user on the webpage         FacesContext.getCurrentInstance().addMessage(null, msg);         try {             copyFile(event.getFile().getFileName(), event.getFile().getInputstream());         } catch (IOException e) {             //handle the exception             e.printStackTrace();         }     }      public void copyFile(String fileName, InputStream in) {         try {               // write the inputStream to a FileOutputStream             OutputStream out = new FileOutputStream(new File(destination + fileName)); // cannot find path when adding username atm             System.out.println("Called CopyFile"); //testing              System.out.println(destination + fileName);              int read = 0;             byte[] bytes = new byte[1024];              while ((read = in.read(bytes)) != -1) {                 out.write(bytes, 0, read);             }              in.close();             out.flush();             out.close(); //make sure new file is created, (displays in glassfish server console not to end user)             System.out.println("New file created!");//testing         } catch (IOException e) {             e.printStackTrace();              FacesMessage error = new FacesMessage("The files were not uploaded!");             FacesContext.getCurrentInstance().addMessage(null, error);         }     } } 

FINAL EDIT (Hopefully)

 public void copyFile(String fileName, InputStream in) {         try {              destination = "C:/Users/Richard/printing~subversion/fileupload/web/WEB-INF/uploaded/"; // main location for uploads             File theFile = new File(destination + "/" + username);              theFile.mkdirs();// will create a sub folder for each user (currently does not work, below hopefully is a solution) (DOES NOW WORK)              System.out.println("Completed File");             // write the inputStream to a FileOutputStream             OutputStream out = new FileOutputStream(new File(destination + fileName)); // cannot find path when adding username atm             System.out.println("Called CopyFile"); //testing              System.out.println(destination + fileName);              int read = 0;             byte[] bytes = new byte[1024];              while ((read = in.read(bytes)) != -1) {                 out.write(bytes, 0, read);             }              in.close();             out.flush();             out.close(); //make sure new file is created, (displays in glassfish server console not to end user)             System.out.println("New file created!");//testing         } catch (IOException e) {             e.printStackTrace();              FacesMessage error = new FacesMessage("The files were not uploaded!");             FacesContext.getCurrentInstance().addMessage(null, error);         }     } } 

Just how can i print out the new destination and use this later on as currently it creates the new folder but does not select it to use

EDIT SOLVED THIS TOO :

    NewDestination = "C:/Users/Richard/printing~subversion/fileupload/web/WEB-INF/uploaded/" + username; 

Added the above code and now it all works

Answer 1

You have to actually call some method to create the directories. Just creating a file object will not create the corresponding file or directory on the file system.

You can use File#mkdirs() method to create the directory: -

theFile.mkdirs(); 

Difference between File#mkdir() and File#mkdirs() is that, the later will create any intermediate directory if it does not exist.