package com.cy;
// 通过类来形容一类事物, 把事物的属性当做成员变量, 把行为当做办法
public class Car {
private String color;
private double price;
private String brand;
public String getColor() {return color;}
public void setColor(String color) {this.color = color;}
public double getPrice() {return price;}
public void setPrice(double price) {this.price = price;}
public String getBrand() {return brand;}
public void setBrand(String brand) {this.brand = brand;}
}
package com.cy;
public class Test01 {public static void main(String[] args) {Car c = new Car();
// c.print(); // 全都是默认值
// c.brand="飞驰";
// c.color="粉色";
// c.price=9999999.0;
// c.print();
// c.run();
// c.consume();}
}
package com.cy;
// 创立老师类：// 剖析：// 属性：性别，名字，授课内容
// 性能：讲课
public class Teacher {
String name;
String sex;
String subject;
public void lecture(){System.out.println("正在讲课");
}
public void print(){System.out.println(name+sex+subject);
}
}
package com.cy;
/**
* @Author 张鹏宇
* @Date 2021/3/25 10:20
*/public class Test02 {public static void main(String[] args) {Teacher t = new Teacher();
t.name="张三";
t.sex="男";
t.subject="java";
t.print();}
}
package com.cy;
/**
* @Author 张鹏宇
* @Date 2021/3/25 10:54
*/public class Student {
private String name;
private int age;
private String subject;
// get(获取值) set(设置值)
public String getName(){return name;}
public void setName(String name){
this.name =name;
// null 张三 this 指代以后对象
}
//
public void setAge(int age){this.age=age;}
public int getAge(){return age;}
public void setSubject(String subject){this.subject=subject;}
public String getSubject(){return subject;}
public void eat(){System.out.println("正在吃饭");
}
public void sleep(){System.out.println("正在睡觉");
}
public void play(){System.out.println("正在游玩");
}
}
package com.cy;
/**
* @Author 张鹏宇
* @Date 2021/3/25 10:56
*/public class Test03 {public static void main(String[] args) {Student s = new Student();
// s.name="张三"; 被 private 润饰的成员变量不能再间接拜访
s.setName("张三");
s.setAge(18);
s.setSubject("java");
// String name = s.getName();
System.out.println(s.getName());
System.out.println(s.getAge());
System.out.println(s.getSubject());
System.out.println(s);
}
}