String python = list.get(1); ArrayList and LinkedList use abstraction by implementing a List interface. That’s why we could replace ArrayList with LinkedList in the above example. Let’s take another real-life example. When you search for any text on Google, you just type text in the tex...
zz from:http://javapapers.com/oops/association-aggregation-composition-abstraction-generalization-realization-dependency/ These terms signify the relationships between classes. These are the buildin 休闲 Generalization Realization Dependency Composition