Declaration

To put a class into a package you need to do two things.

First, put a "package declaration" at the top of the file. This looks like the word package followed by the name of the package and a ;

package dungeon;

class BugBear {

}

Then you need to make sure that the .java file is in a folder matching the name of that package.

So, for the example above, if your code was previously laid out like this

src/
   BugBear.java

It needs to be changed to this.

src/
  dungeon/
    BugBear.java