[Demonstration 1]

[Buggy Method]
public static void updateNotification(Context context) {
    if (!PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext()).getBoolean(context.getString(R.string.pref_key_notification_enable), true)) {
        dismissNotification(context);
        return;
    }
    WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo wifiInfo = wifiManager.getConnectionInfo();
    String ssid = wifiInfo.getSSID();
    if (ssid != null && (ssid.contains("Routers of Rohan"))) {
        showNotification(context);
    } else {
        dismissNotification(context);
    }
}

[Buggy Hunk]
WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

[Patch]
WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);

[Demonstration 2]

[Buggy Method]
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fragment_login);
}

[Buggy Hunk]
setContentView(R.layout.fragment_login);

[Patch]
setContentView(R.layout.activity_login);