When fields are declared protected, there is the possibility that methods in subclasses will directly access them, effectively increasing the coupling within a class hierarchy.
将字段声明为受保护时，子类中的方法就有可能直接访问它们，这样就可能有效地增加类层次结构中的耦合。
The first and most important addition was access protection for methods and instance variables on classes -- the public, protected, and private keywords.
第一个也是最重要的新特性是针对类的方法和实例变量的访问保护 ——public、protected 和private 关键字。
That's why the Vehicle class, and its subclasses, have either private or protected fields, and public setter and getter methods to provide access.
这也正是Vehicle类及其子类都具有 private或者protected属性，而用publicsetter和getter方法来访问属性的原因。
Explore dongle protected software access, call and data access methods to study the dongle query the custom authentication algorithm and authentication interactive software security.
探索加密狗保护软件时的接入、调用及数据存取方式，研究加密狗内自定义算法的查询式认证与交互性认证方式对软件安全的影响。
Explore dongle protected software access, call and data access methods to study the dongle query the custom authentication algorithm and authentication interactive software security.
探索加密狗保护软件时的接入、调用及数据存取方式，研究加密狗内自定义算法的查询式认证与交互性认证方式对软件安全的影响。
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