作业： 首先创建学生类，同时添加私有属性name、birthday、sex，并添加各自的set/get方法 然后创建教师类并继承学生类，再添加私有属性workYears，并添加set/get方法。 代码如下： 学生类

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public class Student { private String name; private String birthday; private String sex; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getBirthday() { return birthday; } public void setBirthday(String birthday) { this.birthday = birthday; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }

教师类：

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public class Student { private String name; private String birthday; private String sex; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getBirthday() { return birthday; } public void setBirthday(String birthday) { this.birthday = birthday; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }