what is the last parameter in getInt() method in SharedPerference Android : <p>What is meant by "-1" in last line of this SharedPreference program ?</p>

<pre><code>SharedPreferences sp = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();
editor.putInt("your_int_key", yourIntValue);
editor.commit();

SharedPreferences sp = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
int myIntValue = sp.getInt("your_int_key", -1);
</code></pre>
