Java创建对象的5种核心方式：1、使用new关键字；2、使用Class类的newInstance()方法；3、使用构造方法类的newInstance()方法；4、使用clone()方法；5、使用反 ...

The next class, Employee, is a contrived example of a class in which the extensible class’s constructor calls an overridable method (setSalaryRange()). Employee.java ...

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.