ArrayList基础练习

定义教师（Teacher）类，属性包含姓名和专业名称。

将若干教师对象存入ArrayList集合中，并遍历集合打印教师信息，
姓名：赵老师, 专业：javase
姓名：钱老师, 专业：javaee
姓名：孙老师, 专业：php
姓名：李老师, 专业：python

图纸类：

public class Teacher {
    //私有成员变量
    private String name;
    private String course;
    //构造方法，成员方法
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getCourse() {
        return course;
    }
    public void setCourse(String course) {
        this.course = course;
    }
    public Teacher(String name, String course) {
        this.name = name;
        this.course = course;
    }
    public Teacher() {
    }
}

测试类：

public class TeacherTest {
    public static void main(String[] args) {
        //创建了4个Teacher对象
        Teacher t1 = new Teacher("赵老师", "javase");
        Teacher t2 = new Teacher("钱老师", "javaee");
        Teacher t3 = new Teacher("孙老师", "php");
        Teacher t4 = new Teacher("李老师", "python");
        //创建集合用以保存Teacher对象，泛型限制为Teacher
        ArrayList teachers = new ArrayList<>();
        //在集合末尾添加对象
        teachers.add(t1);
        teachers.add(t2);
        teachers.add(t3);
        teachers.add(t4);
        //遍历集合
        for (int i = 0; i < teachers.size(); i++) {
            //新对象临时保存一下
            Teacher temp = teachers.get(i);
            //新对象调用方法打印一下
            System.out.println(temp.getName() + "-----" + temp.getCourse());
        }
    }
}