public class Goods { //商品实体类 private String number ; //商品编号 private String name ; //商品价格 private double price ; //商品单价 private int quantity ; //商品数量 public void setNumber ( String number ) { this .
public class Goods {
//商品实体类
private String number;//商品编号
private String name;//商品价格
private double price;//商品单价
private int quantity;//商品数量
public void setNumber(String number) {
this.number = number;
}
public String getNumber() {
return number;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setPrice(double price) {
this.price = price;
}
public double getPrice() {
return price;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public int getQuantity() {
return quantity;
}
}
测试结果import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.UUID;
//set接口
public class test59 {
public static void main(String[] args){
//Set goodsset=new HashSet(18);//初始容量，不够用会自动扩展
Set goodsset=new HashSet(16);
Goods goods0=new Goods();
goods0.setName("肥皂");
goods0.setNumber(UUID.randomUUID().toString());
goods0.setQuantity(20000);
Goods goods1=new Goods();
goods1.setName("洗发水");
goods1.setNumber(UUID.randomUUID().toString());
goods1.setQuantity(20000);
Goods goods2=new Goods();
goods2.setName("运动鞋");
goods2.setNumber(UUID.randomUUID().toString());
goods2.setQuantity(20000);
goodsset.add(goods2);
goodsset.add(goods1);
goodsset.add(goods0);
// goodsset.add(goods3);
Iterator iterator=goodsset.iterator();
while(iterator.hasNext()){
Goods g=(Goods)iterator.next();
System.out.println(g.getName()+"\t"+g.getNumber()+"\t"+g.getQuantity());
}
}
}