对象数组增删改查和继承

Clothes.java

/** * 定义一个衣服类（名字，类型（男士或女士），价格） * 重写equal、toString等方法 * */public class Clothes {    private String name;    private String sex;    private double price;    public Clothes() {        super();    }    public Clothes(String name, String sex, double price) {        super();        this.name = name;        this.sex = sex;        this.price = price;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getSex() {        return sex;    }    public void setSex(String sex) {        this.sex = sex;    }    public double getPrice() {        return price;    }    public void setPrice(double price) {        this.price = price;    }    @Override    public int hashCode() {        final int prime = 31;        int result = 1;        result = prime * result + ((name == null) ? 0 : name.hashCode());        long temp;        temp = Double.doubleToLongBits(price);        result = prime * result + (int) (temp ^ (temp >>> 32));        result = prime * result + ((sex == null) ? 0 : sex.hashCode());        return result;    }    @Override    public boolean equals(Object obj) {        if (this == obj)            return true;        if (obj == null)            return false;        if (getClass() != obj.getClass())            return false;        Clothes other = (Clothes) obj;        if (name == null) {            if (other.name != null)                return false;        } else if (!name.equals(other.name))            return false;        if (Double.doubleToLongBits(price) != Double.doubleToLongBits(other.price))            return false;        if (sex == null) {            if (other.sex != null)                return false;        } else if (!sex.equals(other.sex))            return false;        return true;    }    @Override    public String toString() {        return "Clothes [name=" + name + ", sex=" + sex + ", price=" + price + "]";    }}

ClothesManage.java

/** * 对象数组的增删改查和继承 */import java.util.Arrays;public class ClothesManage {    protected Clothes[] clothes = new Clothes[3];    protected int count = 0;    //增加一个对象    public void add(Clothes c) {        if (count >= clothes.length) {            int newLen = (clothes.length * 3) / 2 + 1; //重新赋予数组长度            clothes = Arrays.copyOf(clothes, newLen);        }        clothes[count] = c;        count++;    }    //查找对象是否在数组中    public int find(Clothes c) {        for (int i = 0; i < count; i++) {            if (clothes[i].equals(c)) {                return i;            }        }        return -1;    }    //删除数组中的对象    public void delete(Clothes c) {        for (int i = 0; i < count; i++) {            if (clothes[i].equals(c)) {                for (int j = i; j < count - 1; j++) {                    clothes[j] = clothes[j + 1];                }                clothes[count - 1] = null;                count--;                break;            }        }    }    //修改数组中的对象    public void update(Clothes c1, Clothes c2) {        int i = find(c1);        clothes[i] = c2;    }    public void list() {        for (int i = 0; i < count; i++) {            System.out.println(clothes[i].toString());        }    }}//继承并重写list()方法，实现冒泡排序class SortClothesManage extends ClothesManage {    public void list() {        Clothes temp = null;        for (int i = 0; i < clothes.length - 1; i++) {            for (int j = 0; j < clothes.length - 1 - i; j++) {                if (clothes[j].getPrice() < clothes[j + 1].getPrice()) {                    temp = clothes[j];                    clothes[j] = clothes[j + 1];                    clothes[j + 1] = temp;                }            }        }        super.list();    }}//继承并重写list()方法，实现只输出女士服装class SexClothesManage extends ClothesManage{    public void list(){        ClothesManage cm=new ClothesManage();        for(int i=0;i<count;i++){            if("女士".equals(clothes[i].getSex())){                cm.add(clothes[i]);            }        }        cm.list();    }}

TestClothes

public class TestClothes {    public static void main(String[] args) {        Clothes c1=new Clothes("内衣1","男士",121);        Clothes c2=new Clothes("内衣2","男士",122);        Clothes c3=new Clothes("内衣3","男士",123);        Clothes c4=new Clothes("内衣4","女士",124);        Clothes c5=new Clothes("内衣5","女士",125);        ClothesManage cm=new ClothesManage();        cm.add(c1);        cm.add(c2);        cm.add(c3);        cm.add(c4);        cm.add(c5);        cm.list();        System.out.println("---------------实现按价格排序-----------------");        SortClothesManage sm=new SortClothesManage();        sm.add(c1);        sm.add(c2);        sm.add(c3);        sm.add(c4);        sm.add(c5);        sm.list();        System.out.println("---------------实现只输出女士服装--------------------");        SexClothesManage ssm=new SexClothesManage();        ssm.add(c1);        ssm.add(c2);        ssm.add(c3);        ssm.add(c4);        ssm.add(c5);        ssm.list();    }}