VIP31/spring-demo/src/main/java/com/sf/auto/Chair.java

package com.sf.auto;

/**
 * 椅子
 */
public class Chair {

    public Chair() {
        System.out.println("Chair 构造器");
    }

    /**
     * 椅子上有一位老师
     *   类别  名字
     * Teacher teacher;
     */
    private Teacher teacher;

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        System.out.println("Chair setTeacher");
        this.teacher = teacher;
    }

    @Override
    public String toString() {
        return "Chair{" +
                "teacher=" + teacher +
                '}';
    }
}