《Java程序设计》课程电子教案（PPT课件讲稿）继承

Java

Java

继承 例子:请确认各类之间的关系 plane ry plane(军事) passenger plane(客机) cargo plane(货物) fighter plane(战斗机) airliner(民用机)

继承 • 例子：请确认各类之间的关系 plane military plane（军事） passenger plane （客机） cargo plane （货物） fighter plane （战斗机） Airliner （民用机）

Plane Military plane airlin Fighter plane Passenger plane Cargo plane Executive jet

Plane Military plane Airliner Fighter plane Cargo plane Passenger plane Executive jet

Public class manager Public class Employee String name String name Date hireDate Date hireDate Date dateofBirth Date dateofBirth; String jobTitle String jobTitle int grade int grade String Department public String get Details public String getDetailso public void Guide()

Public class Employee { String name; Date hireDate; Date dateofBirth; String jobTitle int grade; public String getDetails() } Public class Manager { String name; Date hireDate; Date dateofBirth; String jobTitle int grade; String Department; public String getDetails() public void Guide() }

Continue Public class manager extends employee String department public void Guide 关键字 extends是解决继承问题的

Continue Public class manager extends employee { String department; public void Guide() } 关键字extends 是解决继承问题的