本文主要是介绍Java(基础)多态数组,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
package com.day12.Polymorphism;
import javax.jnlp.PersistenceService;
public class PersonTest2 {
public static void main(String[] args) {
//创建一个数组,可融合你各种不同类型的对象时,需要多态,这样的数组称为多态数组
Person[] arr = new Person[5];
arr[0] = new Chinese("张三", 30, "男", "虎");
arr[1] = new American("Banner", 20, "male", true);
arr[2] = new Person("someBody", 25, "unknown");
arr[3] = new American("Rose", 19, "famale", false);
arr[4] = new Beijing("李四", 40, "女", "猪");
for (int i = 0; i < arr.length; i++) {
System.out.println(arr[i].toString());
}
System.out.println("=====================================================================");
//排序
for (int i = 0; i < arr.length - 1; i++) {
for (int j = 0; j < arr.length - 1 - i; j++) {
if (arr[j].getAge() > arr[j + 1].getAge()) {
Person tmp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = tmp;
}
}
}
for (Person tmp :
arr) {
System.out.println(tmp);
}
}
}
package com.day12.Polymorphism;
public class ComputerTest {
public static void main(String[] args) {
//创建一个多态数组
Computer[] cmArr = new Computer[5];
cmArr[0] = new PC(5.0,16,800,19999,"corsair");
cmArr[1] = new NotePad(2.4,8,200,3999,5);
cmArr[2] = new NotePad(2.6,16,400,8999,8);
cmArr[3] = new PC(3.5,8,500,3999,"cherry");
cmArr[4] = new Computer(3,4,300,2000);
for (Computer tmp :
cmArr) {
System.out.println(tmp.getDetails());
}
System.out.println("=============================================================");
//使用选择排序根据价格进行排序
for (int i = 0; i <cmArr.length-1 ; i++) {
int minIndex = i;
for (int j = i+1; j <cmArr.length ; j++) {
if(cmArr[j].getPrice()<cmArr[minIndex].getPrice()){
minIndex = j;
}
}
Computer tmp = cmArr[i];
cmArr[i] = cmArr[minIndex];
cmArr[minIndex] = tmp;
}
for (Computer tmp :
cmArr) {
System.out.println(tmp.getDetails());
}
}
}
这篇关于Java(基础)多态数组的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!