类抽象类接口_练习

小案例：
http://blog.csdn.net/daidaishuiping/article/details/78042976
第一个小案例：

public class 类抽象类接口_练习 {

public static void main(String[] args) {

System.out.println("足球运动员的方法");

Foterbo foterbo = new Foterbo("海政",19,"足球运动员泡妞");

System.out.println("姓名：" + foterbo.getName() + " " + "年龄："

+ foterbo.getAge() + " " + "技能："+foterbo.getJineng());

foterbo.sleep();

foterbo.student();

System.out.println();

System.out.println();

System.out.println();

System.out.println();

System.out.println("足球教练的方法");

Foterbojiaolian foterbojiaolian = new Foterbojiaolian();

foterbojiaolian.setName("李胖子");

foterbojiaolian.setAge(30);

System.out.println("姓名：" + foterbo.getName() + " " + "年龄："

+ foterbo.getAge());

foterbojiaolian.sleep();

foterbojiaolian.speck();

}

}

interface English {

public abstract void speck();

}

abstract class Persons {

private String name;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public Persons() {

super();

}

public Persons(String name, int age) {

super();

this.name = name;

this.age = age;

}

private int age;

public abstract void sleep();

public void eat() {

System.out.println("吃饭");

}

}

abstract class Player extends Persons {

@Override

public void sleep() {

System.out.println("睡觉");

}

public Player() {

}

public Player(String name, int age) {

super(name, age);

}

public abstract void student();

}

class Foterbo extends Player {

public String getJineng() {

return jineng;

}

public void setJineng(String jineng) {

this.jineng = jineng;

}

private String jineng;

public Foterbo(String name, int age, String jineng) {

super(name, age);

this.jineng = jineng;

}

@Override

public void sleep() {

System.out.println("足球运动员躺着睡");

}

@Override

public void student() {

System.out.println("学习踢足球");

}

public Foterbo() {

}

}

class Foterbojiaolian extends Persons implements English {

@Override

public void speck() {

System.out.println("说英语");

}

@Override

public void sleep() {

// TODO 自动生成的方法存根

System.out.println("足球教练躺着睡");

}

public Foterbojiaolian() {

}

public Foterbojiaolian(String name, int age) {

super(name, age);

}

}

/*
假如我们在开发一个系统时需要对员工类进行设计，员工包含3个属性：姓名、工号以及工资。
经理也是员工，除了含有员工的属性外，另为还有一个奖金属性。
请使用继承的思想设计出员工类和经理类。要求类中提供必要的方法进行属性访问。
分析：
普通员工类
成员变量：姓名、工号以及工资。
成员方法：工作
经理类：
成员变量：姓名、工号以及工资，奖金属性
成员方法：工作
实现：
员工类：
普通员工类：
经理类：
*/
第二个小案例：
public class 抽象类继承多态_案例 {
public static void main(String[] args) {
System.out.println("普通员工的基本资料-----------------------");
Employee employee = new Putongyuangong();
employee.setName("海政");
employee.setAge(19);
employee.setId(2014130448);
employee.setMonny(100000);
System.out.println("姓名：" + employee.getName() + " " + "年龄+"
+ employee.getAge() + " " + "学号+" + employee.getId() + " "
+ "工资+" + employee.getMonny());
employee = new Putongyuangong("黄海政", 20, 2014130448, 20000);
System.out.println("姓名：" + employee.getName() + " " + "年龄+"
+ employee.getAge() + " " + "学号+" + employee.getId() + " "
+ "工资+" + employee.getMonny());
((Putongyuangong) employee).work();
System.out.println();
System.out.println();
System.out.println();
System.out.println();
System.out.println("经理的基本资料---------------------------");
Jingli jingli = new Jingli();
jingli.setName("头头");
jingli.setAge(30);
jingli.setId(2013132023);
jingli.setMonny(1000000);
jingli.setJiangjin("陪领导打麻将");
System.out.println("姓名：" + jingli.getName() + " " + "年龄+"
+ jingli.getAge() + " " + "学号+" + jingli.getId() + " "
+ "工资+" + jingli.getMonny() + " " + "特殊能力："
+ jingli.getJiangjin());
jingli = new Jingli("头头", 30, 1013132023, 1000000, "陪领导打麻将");
System.out.println("姓名：" + jingli.getName() + " " + "年龄+"
+ jingli.getAge() + " " + "学号+" + jingli.getId() + " "
+ "工资+" + jingli.getMonny() + " " + "特殊能力："
+ jingli.getJiangjin());
jingli.work();
}
}
abstract class Employee {
private String name;
public Employee() {
super();
}
public Employee(String name, int age, int id, int monny) {
super();
this.name = name;
this.age = age;
this.id = id;
this.monny = monny;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getMonny() {
return monny;
}
public void setMonny(int monny) {
this.monny = monny;
}
private int age;
private int id;
private int monny;
}
class Putongyuangong extends Employee {
public Putongyuangong(String name, int age, int id, int monny) {
super(name, age, id, monny);
}
public Putongyuangong() {
}
public void work() {
System.out.println("上班咯~~~~~~~~~~~~~~~~");
}
}
class Jingli extends Employee {
private String jiangjin;
public String getJiangjin() {
return jiangjin;
}
public void setJiangjin(String jiangjin) {
this.jiangjin = jiangjin;
}
public Jingli(String name, int age, int id, int monny, String jiangjin) {
super(name, age, id, monny);
this.jiangjin = jiangjin;
}
public Jingli() {
// TODO 自动生成的构造函数存根
}
public void work() {
System.out.println("喝茶~~~~~~~~~~~~~~~~");
System.out.println("上班~~~~~~~~~~~~~~~~");
}
}