student1_ex.java

非常好的JAVA学习资料

class Person1
{ protected String name;
  protected int age;
  public Person1(String na,int ag)
  {name=na;age=ag;}
  public Person1()
  {}
  public void print(int c)
  { System.out.println("The object of Person:  "+name+","+age);}
 }
class Student1 extends Person1
{ String address;
  String department;
  public Student1(String na,int ag,String ad,String de)
  {super(na,ag);
   address=ad;
   department=de;
      }
   public void print()
   { System.out.println("The object of Student: "+name+","+age+","+address+","+department);}
}
public class Student1_ex
{public static void main(String args[])
 {Person1 pe=new Person1("Tom",20);
  Student1 st=new Student1("Jhon",19,"336 West Street","Computer");
  pe.print(1);
  st.print(1);
 }
}