1. 定义一个教师类包括属性:教师编号,教师姓名,教师年龄,教师性别.java

public class B 

public static void main(String[] args)

Set<Teacher>set = new HashSet<Teacher>()

Iterator<Teacher>iterator = set.iterator()

while (iterator.hasNext())

System.out.println

class Teacher

private int id

public Teacher()

public Teacher(int id, String name, int age, boolean sex) 

this.sex = sex

HashSet类

实现了Set接口，由哈希表（实际上是一个HashMap实例）支持。它不保证Set的迭代顺序，特别是它不保证该顺序持久不变，此类允许使用空中null元素。添加到由HashSet类实现的Set集合渣磨中的对象。需要重新实现equal（）方法。

从而保证插入集合中对象的标识的唯一性。斗梁山HashSet类实现了Set接口，由哈希表（实际上是一个HashMap实例）支持。它不保证Set的迭代顺序，特别是它不保证该顺序持久不变。

package fanqiclass Teacher {

private String name = nullpublic String getName() {

return name

} public void setName(String name) {

this.name = name

} public String getSex() {

return sex

} public void setSex(String sex) {

this.sex = sex

} public int getAge() {

return age

} public void setAge(int age) {

this.age = age

} public String getCourse() {

return course

} public boolean setCourse(String course) {

if (course == null || course.trim().length() == 0) {

System.out.println("设置课程失败！")

return false

}

this.course = course

return true

} public int getEffect() {

return effect

} public boolean setEffect(int effect) {

if (effect <1 || effect >4) {

System.out.println("设置失败！")

return false

} else {

this.effect = effect

return true

}

} private String sex = null

private int age = 0

private String course = null

private int effect = 1public Teacher(String name, String sex, int age, String course, int effect) {

this.name = name

this.sex = sex

this.age = age

this.course = course

this.effect = effect

} public String getDetails() {

return "姓名：" + getName() + "\n性别：" + getSex() + "\n年龄：" + getAge()

+ "族友并\n讲授告陵课程：" + getCourse()

}

}public class WuZiQi { public static void main(String[] args) {

Teacher t = new Teacher("张三"兆迹, "男", 35, "计算机基础", 2)

System.out.println(t.getDetails())

}

}

定义教师类此颤，public class TeacherInfo，里面添加变量，参考写法，private string teacherName；后面再封装一下，set和get方法，重写tostring方法，输出肆毕教师类对象信息就行森雹败了

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