public?class?Traffic?{
?int?people;
?String?tra;
?public?void?run(){
?System.out.println(people+"人乘坐"+tra+"出行");
?}
}

public?class?Car?extends?Traffic?{
???{super.people=40;
???super.tra="大巴";?}
public?Car(){
???super.run();
?}
}

public?class?Test?{
public?static?void?main(String[]?args){
???Traffic?T?=?new?Traffic();
???Car?c?=?new?Car();
??}
}

? 輸出的結果是對的，但總覺得怪怪的，請教下各位大神，這樣做有問題嗎？