30 lines
1.0 KiB
Java
30 lines
1.0 KiB
Java
package com.inmind.arraylist03;
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import java.util.ArrayList;
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/*
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常用类-ArrayList-练习2_添加对象
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*/
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public class Demo09 {
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//创建一个保存book对象的容器，添加3本书，通过集合遍历判断出哪本书最贵
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public static void main(String[] args) {
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ArrayList<Book> bookList = new ArrayList<>();
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//先创建3本书，或者在添加时，进行创建
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//Book book1 = new Book("b001", "书1", 10.0, "2020-1-1");
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Book book2 = new Book("b001", "书2", 10.0, "2020-1-1");
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Book book3 = new Book("b001", "书3", 50.0, "2020-1-1");
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bookList.add(new Book("b001", "书1", 30.0, "2020-1-1"));
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bookList.add(book2);
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bookList.add(book3);
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//集合的变量
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Book maxBook = bookList.get(0);
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for (int i = 0; i < bookList.size(); i++) {
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Book book = bookList.get(i);
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if (book.getPrice() > maxBook.getPrice()) {
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maxBook = book;
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}
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}
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maxBook.showBook();
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}
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}
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