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Of course, if you mark a variable or method with the public keyword,
you provide access from all compilation units in all packages:
*------------------------------------------------------------*
| Everywhere else |
*------------------------ | ---------------------------------*
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*------------------------ | ---------------------------------*
| *---------------------- | -------* *-------------------* |
| | *----- v -----* | | | |
| | | Same | | | | |
| | | class | | | | |
| | | | | | | | |
| | Rest of the | v | | | Other compilation | |
| | compilation -----> minutes <-------- unit, same package| |
| | unit | ^ | | | | |
| | | | | | | | |
| | *----- | -----* | | | |
| *---------------------- | -------* *-------------------* |
*------------------------ | ---------------------------------*
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|
|
*------------------------ | ---------------------------------*
| *---------------------- | -------------------------------* |
| | *----------- | -------* | |
| | | Subclass in another | | |
| | | compilation unit in | | |
| | | another package | | |
| | *---------------------* | |
| *--------------------------------------------------------* |
*------------------------------------------------------------*