How to write files in Android?

To write files in Android follow the following steps:

• Create a variable path with the help of Environment class provided by Android OS
• Create an object of File which indicates the directory, and pass the path string created earlier. Then use mkdir() method to create the directory.
• Create a string of file name.
• Create an object of File with indicates the file, and pass the file name string created earlier. 
• Check if the file exists. If not then use createNewFile() method to create the file.
• Create an object of FileWriter with the help of file object created earlier.
• Create an object of BufferedWriter with the help of fileWriter object created earlier.Create the string that you want to write on the file.
• Use write() method of the BufferedWriter object.
• Don't forget to close the object of BufferedWriter and FileWriter in this order.

e.g.

 BufferedWriter output;
 FileWriter filewriter;
 String strTileText = "";

 String directoryName = "programming.notes";
 directoryName = directoryName.replace(".", "");

 String path = Environment.getExternalStorageDirectory() + "/" + directoryName + "/";

 File directory = new File(path);
 directory.mkdir();

 String fullName = path + "notes.txt";
 File file = new File(fullName);
 if(!file.exists())
 {
    file.createNewFile();
 }

 filewriter = new FileWriter(file, true);
 output = new BufferedWriter(filewriter);

 strTileText += "Hello World"+ "\n";

 output.write(strTileText);
 output.close();
 filewriter.close();