Interaction with internal storage in android

public void WriteInInternalStorage(View view) 
{    
    EditText name = (EditText) findViewById(R.id.name);    
    String data = name.getText().toString();    
    
    try 
    {        
        FileOutputStream outputFileStream = openFileOutput("file.txt", Context.MODE_PRIVATE);        
        outputFileStream.write(data.getBytes());        
        outputFileStream.close();    
    } catch (Exception e) 
    {        
        e.printStackTrace();    
    }
}

public void ClearData(View view) 
{    
      EditText name = (EditText) findViewById(R.id.name);    
      name.setText("");
}

public void DeleteInternalStorageFile(View view) 
{    
    this.deleteFile("file.txt");
}

public void ReadFromInternalStorage(View view) 
{    
    EditText name = (EditText) findViewById(R.id.name);    
    try 
    {        
          InputStream inputStream = this.openFileInput("file.txt");        
          InputStreamReader inputStreamReader = new InputStreamReader(inputStream);        
          BufferedReader bufferedReader = new BufferedReader(inputStreamReader);        
          
          String line = new String();        
          String allLines = new String();        
          
          while ((line = bufferedReader.readLine()) != null) 
          {            
                allLines += line;        
          }        
          
          name.setText(allLines);        
          inputStream.close();    
    } catch (Exception e) 
    {        
          e.printStackTrace();    
    }
}

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