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.csu;

//***********************************************************************
/**
 * 该类用于描述Student的具体详细信息并提供了对其属性进行操作的get/set方法对
 * @author draglong
 * <img src="doc-files/wuming.JPG">
 * @version 1.0.0 2007.05.30 新规做成
 *
 */
//***********************************************************************
public class Student{
  //属性定义
  private String stu_name;
  private int stu_age;
  private String stu_sex;
  protected int stu_grade;

  public Student(){}
  //**********************************************************************
  /**
   *构造函数
   *@param argName 学生姓名
   *@param argAge 学生年龄
   *@param argSex 学生性别
   *@param argGrade 学生年级
   *@see cn.edu.tsinghua.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;
  }

  /**
   *@return 返回取得学生的姓名
   */
  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;
  }
  /**
   *测试构造学生对象并对该对象进行操作
   *@param args 从命令行取得的参数
   */
  public static void main(String[] args){
    Student stu = new Student();
	System.out.println(stu.hashCode());
	System.out.println("对象的原始属性值为: " + stu.getName() + ", " + stu.getSex() + " , " + stu.getAge() + " , " + stu.getGrade() );
	stu.setName("chenlong");
	stu.setSex("Male");
	stu.setAge(30);
	stu.setGrade(4);
	System.out.println("显示赋值后: " + stu.getName() +", " + stu.getSex() + " , " + stu.getAge() + " , " + stu.getGrade() );

	stu = new Student();
	System.out.println("显示赋值后: " + stu.getName() +", " + stu.getSex() + " , " + stu.getAge() + " , " + stu.getGrade() );
  }
}