class Pupil{

Pupil(int age){

System.out.println("pupil:"+age);

}

}

class Teacher{

Pupil p1=new Pupil(9);

Teacher(){

System.out.println("Teacher()");

p3=new Pupil(10);

}

Pupil p2=new Pupil(11);

void teach(){

System.out.println("teach()");

}

Pupil p3=new Pupil(12);

}

public class Sequence {

public static void main(String[] args) {

// TODO 自动生成的方法存根

Teacher t=new Teacher();

t.teach();

}

}