本文详细介绍了Java高级类特性，包括静态变量、方法及初始化器的使用；终态类、方法和变量的概念；抽象类与方法的应用场景；内部类的区别及其用法；接口与抽象类的选择等。读者将学会如何在程序中正确地运用这些特性。
Advanced Class Features:
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- Describe static variables, methods, and initializers
- Describe final classes, methods, and variables
- Explain how and when to use abstract classes and methods
- Explain how and when to use inner classes
- Distinguish between static and non- static inner classes
- Explain how and when to use an interface
- In a Java software program, identify:
- static methods and attributes
- final methods and attributes
- Inner classes interface and abstract classes
- abstract methods
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