对象（CarDemo）

package duixiang;class Car{private String tapy;private String color;private int number;Car()//构造代码块{System.out.println("Benze!!!");}public void setTapy(String tapy)//暴露的设值接口{this.tapy=tapy;}public String getTapy()//暴露的传值接口{return tapy;}Car(String tapy )//构造函数{this.tapy=tapy;show();}Car(String tapy,String color){this.tapy=tapy;this.color=color;show();}Car(String tapy,String color,int number){this(tapy);//this语句this.tapy=tapy;this.color=color;this.number=number;show();}void show(){System.out.println(tapy+"..."+color+"..."+number);}}public class CarDemo{public static void main(String [] args){Car c=new Car("a1");Car c1=new Car("a2","blue");Car c2=new Car("a3","yellow",5);c.setTapy("a5");System.out.println(c.getTapy());}}