Add packages resources (#1619)

* Update 106-packages.md * Update content/roadmaps/110-java/content/100-java-fundamentals/106-packages.md Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>
2 years ago · 913b591988
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 # Packages
 A package is a namespace that mainly contains classes and interfaces. For instance, the standard class `ArrayList` is in the package `java.util`. For this class, `java.util.ArrayList` is called its fully qualified name because this syntax has no ambiguity. Classes in different packages can have the same name. For example, you have the two classes `java.util.Date` and `java.sql.Date`, which are different. If no package is declared in a class, its package is the default package.
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	`# Packages`	`# Packages`

		A package is a namespace that mainly contains classes and interfaces. For instance, the standard class `ArrayList` is in the package `java.util`. For this class, `java.util.ArrayList` is called its fully qualified name because this syntax has no ambiguity. Classes in different packages can have the same name. For example, you have the two classes `java.util.Date` and `java.sql.Date`, which are different. If no package is declared in a class, its package is the default package.