To define a package the package command is included as the first statement in a Java source file. Any classes declared within that file will belong to the specified package. The package statement defines a name space in which classes are stored.
package pakage_name;
/* If you omit the package statement, the class names are put into the default package, which has no name.*/
Java uses file system directories to store packages. For example, the .class files for any classes you declare to be part of MyPackage must be stored in a directory called MyPackage.
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