student.java

有一个接口,用抽象类实现它的部分功能,再用实现类继承抽象类,实现其它没实现的接口方法

package cn.edu.tsinghua;

public class Student{
  //属性定义
  private String stu_name;
  private int stu_age;
  private String stu_sex;
  private int stu_grade;
  //get/set方法对
  public Student(){}
  public Student(String argName, int argAge, String argSex, int argGrade){
    stu_name = argName;
	stu_age = argAge;
	stu_sex = argSex;
	stu_grade = argGrade;
  }
  public void setName(String argName){
    stu_name = argName;
  }
  public String getName(){
    return stu_name;
  }
  public void setAge(int argAge){
	if(argAge > 120){
	  stu_age = 120;
	}else if(argAge < 18){
	  stu_age = 18;
	}else{
      stu_age = argAge;
	}
  }
  public int getAge(){
    return stu_age;
  }
  public void setSex(String argSex){
    stu_sex = argSex;
  }
  public String getSex(){
    return stu_sex;
  }
  public void setGrade(int argGrade){
    stu_grade = argGrade;
  }
  public int getGrade(){
    return stu_grade;
  }

}