student3.java~2~

来自「提供了常用的JAVA技术的示例」· JAVA~2~ 代码 · 共 34 行

package Student3;

class Date{
  int year;
  int month;
  int day;
  Date(int year,int month,int day){
      this.year=year;
      this.month=month;
      this.day=day;
  }
  void showDate(){
      System.out.println(year+"-"+month+"-"+day);
  }
}
public class Student3 {
    String no;
    String name;
    Date birth; // 对象变量作类的成员，莫认初始值为 null
    void setStu(String s1,String s2,int y,int m,int d){
        no=s1;
        name=s2;
        birth=new Date(y,m,d);
    }
    Date getBirth(){
        return birth;
    }
public static void main(String[] args) {
    Student3 stu=new Student3();
    stu.setStu("sun","xiaomei",1977,12,27);
    System.out.print(no+name+"'s birth is");
    stu.getBirth().showDate();
  }
}