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Java (cont.)

• Dynamic Binding
  • In Java, all messages are dynamically bound to methods, unless the method is final

• Encapsulation
  • Two constructs, classes and packages
  • Packages provide a container for classes that are related (can be named or unamed)
  • Entities defined without a scope (access) modifier are only visible within the package
  • Every class in a package is a friend to the package scope entities elsewhere in the package
  • Package scope is an alternative to the friends of C++