Car类
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; }}
测试类
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(); }}
Teacher类
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); }}
测试类
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(); }}
Student类
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"); }}
测试类
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); }}