| > When passing a mutable instance into a method which makes a deep copy of the |
| > instance, it results in discrepancies between the forked instances. It is |
| > prone to errors if one expects the state change on the original instance to be |
| > reflected on the method with its forked instance. |
| |
| ```java |
| Location location = new Location("gps"); |
| Bundle bundle = new Bundle(); |
| bundle.putFloat("someFloat", 12.3f); |
| location.setExtras(bundle); |
| |
| // Now add more things to the bundle, but it won't modify the internal |
| // representation stored by Location. |
| bundle.putInt("someInt", 7); |
| ``` |
| |
| ```java |
| private static Bundle getLocationExtras(Location location) { |
| Bundle bundle = location.getExtras(); |
| if (bundle != null) { |
| return bundle; |
| } |
| bundle = new Bundle(); |
| location.setExtras(bundle); |
| |
| // Now leaks the bundle which is subject to modification in its |
| // method of invocation. |
| return bundle; |
| } |
| ``` |
