回答編集履歴
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公式チュートリアル（SUN時代からの継ぎ足し継ぎ足しで今に至る）
test
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@@ -25,3 +25,33 @@
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```
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誤解が発生しそうな記述が公式にあったな
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https://docs.oracle.com/javase/tutorial/java/package/packages.html
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```
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You should bundle these classes and the interface in a package for several reasons, including the following:
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You and other programmers can easily determine that these types are related.
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You and other programmers know where to find types that can provide graphics-related functions.
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The names of your types won't conflict with the type names in other packages because the package creates a new namespace.
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You can allow types within the package to have unrestricted access to one another yet still restrict access for types outside the package.
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```
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多分これを誤った解釈したんだろうな
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