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Defining and importing Packages

Package Organization

Classes and packages are organized into a hierarchy of directories.
For example, if you have a package called MyPackage and a class called Alpha , you can compile your source code like this:

javac -d .

The current directory is indicated by "." and is where the source code resides. The compiler will place Alpha.class in the directory MyPackage , below the current directory. For another example, say you compile a file with the following command:

javac -d /User_Programs/Java/classes

and the file's package statement says:
package MyPackage.MyClass

You will find the compiled class in the directory: