作业1 OO基础1-3、 设计一个教师类Teacher（属于cn.net.sdkd包）

要求：
1)属性有编号（int no）、姓名（String name）、年龄（int age）、所属学院（String seminary），为这些属性设置相应的get和set方法。
2)为Teacher类重写equals方法，要求：当两个教师对象的no相同时返回true。
3)重写Teacher类的toString方法，通过该方法可以返回“编号为**、姓名为**、年龄为**的**学院老师”形式的字符串。 构造main方法进行测试。
（40.0分）

cnnetsdkdTeacher.java

package cn.net.sdkd;

public class Teacher {
    public int no;
    public String name;
    public int age;
    public String seminary;

    public Teacher() {
        this.no = 0;
        this.name = null;
        this.age = 0;
        this.seminary = null;
    }

    public Teacher(int no, String name, int age, String seminary) {
        this.no = no;
        this.name = name;
        this.age = age;
        this.seminary = seminary;
    }

    public int getNo() {
        return no;
    }

    public void setNo(int no) {
        this.no = no;
    }

    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 String getSeminary() {
        return seminary;
    }

    public void setSeminary(String seminary) {
        this.seminary = seminary;
    }

    public boolean equals(Teacher t) {
        return this.no == t.no;
    }

    @Override
    public String toString() {
        return "编号为" + no +
                "、姓名为" + name +
                "、年龄为" + age +
                "的" + seminary +
                "学院老师";
    }

    public static void main(String[] args) {

        Teacher t1 = new Teacher(1, "zh", 18, "计算机");
        Teacher t2 = new Teacher(2, "fe", 19, "电子");

        System.out.println("两个教师的no是否相等：" + t1.equals(t2));
        System.out.println(t1.toString());
        System.out.println(t2.toString());

    }
}