Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Android Data Persistence File Storage Writing to Internal Storage

Dai Phong
Dai Phong
20,395 Points

Does this quiz setup properly?

I can't pass this quiz. Here is the error:

 ./FileUtilities.java:16: error: no suitable constructor found for FileOutputStream(File)
      FileOutputStream out = new FileOutputStream(fileToWrite);
                             ^
    constructor FileOutputStream.FileOutputStream(String) is not applicable
      (argument mismatch; File cannot be converted to String)
    constructor FileOutputStream.FileOutputStream(java.io.File) is not applicable
      (argument mismatch; File cannot be converted to java.io.File)
    constructor FileOutputStream.FileOutputStream(FileDescriptor) is not applicable
      (argument mismatch; File cannot be converted to FileDescriptor)
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
1 error 

I don't know why error. I check the documentation and FileOutputStream(File) is available.

Here is my code:

import java.io.InputStream;
import java.io.FileOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class FileUtilities {
  public static boolean copyResult;
  public static void saveAssetImage(Context context, String assetName) {
    File fileToWrite = new File(context.getFilesDir(), assetName);
    AssetManager assetManager = context.getAssets();
    try {
      InputStream in = assetManager.open(assetName);
      FileOutputStream out = new FileOutputStream(fileToWrite);
      copyResult = copyFile(in, out);
      in.close();
      out.close();
    } catch(FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  private static boolean copyFile(InputStream in, FileOutputStream out) throws IOException {
    byte[] buffer = new byte[1024];
    int read;
    while((read = in.read(buffer)) != -1) {
     out.write(buffer, 0, read); 
    }
    // Copy magic intentionally omitted
    return true;
  }
}

When I remove import java.io.FileOutputStream;, there is a different error:

./FileUtilities.java:15: error: cannot find symbol
      out.close();
         ^
  symbol:   method close()
  location: variable out of type FileOutputStream
./FileUtilities.java:27: error: cannot find symbol
     out.write(buffer, 0, read); 
        ^
  symbol:   method write(byte[],int,int)
  location: variable out of type FileOutputStream
2 errors