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This works well unless two independent programmers use the same name for their packages. That is, the fully qualified name of the Rectangle class in the graphics package is graphics.Rectangle, and the fully qualified name of the Rectangle class in the java.awt package is. The fully qualified name of each Rectangle class includes the package name. Still, the compiler allows both classes to have the same name if they are in different packages. In fact, the previous example does just that: It defines a Rectangle class when there is already a Rectangle class in the java.awt package. With programmers worldwide writing classes and interfaces using the Java programming language, it is likely that many programmers will use the same name for different types.