分析需求,用封装方式设计类,画出类图 汽车销售人员销售汽车,可售款式有凯越、君威 每款汽车有款式和编号,款式、编号不能修改 汽车销售人员有姓名,姓名不能修改 销售人员有两种销售方式: 按车辆销售,每次一辆 按车型销售(凯越),要同时告诉销售人员购买数量Seller (销售员)-name:String (姓名)+Seller(name:String) (构造函数)+getName():String (获取姓名)+setName(name:String):void (设置姓名)+ sell(car:Excelle):void (销售一辆车)+sell(car:Excelle,num:int):void (销售一批车)Car (汽车)- type:String (类型)- id:String (汽车的编号) + Car(id:String,type:String) (构造函数)+ getType():String (获取汽车类型)+ getId():String (获取汽车编号) 在主函数中,实例化Car和Seller、完成销售员销售一辆车和一批车的过程示例。
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类设计ï¼
package car;
public class Car {
private String id;
private String name;
public void setId(String id) {
this.id = id;
}
public void setName(String name) {
this.name = name;
}
/**
* è·å汽车ç¼å·
*
* @return
*/
public String getId() {
return id;
}
/**
* è·å汽车å称
*
* @return
*/
public String getName() {
return name;
}
public Car(String id, String name) {
this.id = id;
this.name = name;
}
}
package car;
public class Seller {
private String name;
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
/**
* åä¸æ¹è½¦
* @param car
* @param num
*/
public void sell(Car car,int num){
System.out.println("åäºä¸æ¹è½¦ï¼å称ï¼"+car.getName()+"id:"+car.getId());
}
/**
* åä¸è¾è½¦
* @param car
*/
public void sell(Car car){
System.out.println("åäºä¸è¾è½¦ï¼å称ï¼"+car.getName()+"id:"+car.getId());
}
}
主类ï¼
package car;
public class TestSell {
public static void main(String[] args) {
Car c1 = new Car("1000","åè¶");
Seller s1 = new Seller();
s1.sell(c1);
//å100è¾è½¦
s1.sell(c1, 100);
}
}
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追答 public class Car {private String type;
private String id;
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}
public class Seller {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public void sell(String type) {
System.out.println(this.name + "卖出了一辆" + type);
}
public void sell(String type,int number) {
System.out.println(this.name + "卖出了" + number + type );
}
}
public static void main(String[] args) {
Car kaiyue = new Car();
kaiyue.setId("001");
kaiyue.setType("kaiyue");
Car junwei = new Seller();
kaiyue.setId("002");
kaiyue.setType("junwei");
Seller seller = new Seller();
seller.setName("xiaowang");
seller.sell(kaiyue.getType());
seller.sell(junwei.getType(),15);
}