java简单图书查找程序

来源：互联网发布：类似菠萝饭的软件编辑：程序博客网时间：2024/05/16 14:32
package no4;import java.util.*;class Book{private String bookName;private String id;Book(String bookName, String id){this.bookName = bookName;this.id = id;}public String getName(){return this.bookName;}public String getId(){return this.id;}public String toString(){return "找到此书!"+this.bookName+" "+"编号"+this.id;}}public class Main {public static void main(String[] args) {List<Book> all = new ArrayList<Book>();all.add(new Book("java入门到放弃","1"));all.add(new Book("数据结构","2"));all.add(new Book("web","3"));int order;System.out.println("输入指令 1:按书名查找2:按序号查找");while (true){order = impor();if (order == 1){seekName(all);}if (order == 2){seekId(all);}}}public static int impor(){int num=0;Scanner in = new Scanner(System.in);try{num = in.nextInt();}catch (Exception ex){//异常判断System.out.println("请输入数字指令");return 0;}if (num!=1 && num!=2){System.out.println("请输入正确数字指令");return 0;}return num;}public static void seekName(List<Book> all){Scanner in = new Scanner(System.in);System.out.println("输入书名");String str = in.next();for (int i=0; i<all.size(); i++){if (all.get(i).getName().equals(str)){System.out.println("找到"+all.get(i).toString());return ;}}System.out.println("没有找到 ");}public static void seekId(List<Book> all){Scanner in = new Scanner(System.in);System.out.println("输入编号");String str = in.next();for (int i=0; i<all.size(); i++){if (all.get(i).getId().equals(str) == true){System.out.println("找到"+all.get(i).toString());return ;}}System.out.println("没有找到");}}
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