第八周课程总结&实验报告（六）

package demo1;

public class Cuo {
    public static void main(String args[]) {
        int a[] = new int[10];
        try {
            System.out.println(a[100]);
        } catch (ArrayIndexOutOfBoundsException e) {
            System.out.println("数组越界");
        } finally {
            System.out.println("一定会执行");
        }
    }

}

package demo2;

public class DangerException extends Exception{
      public DangerException() {
            
        }
        public void toShow(String name) {
            System.out.println(name + "是危险品");
            
        }
}
import java.util.ArrayList;
public class Machine {
    ArrayList<String> dangergoods=new ArrayList<String>();
    public Machine() {
        dangergoods.add("汽油");
        dangergoods.add("TNT");
        dangergoods.add("刀");
        dangergoods.add("毒品");
        dangergoods.add("枪");
    }
    public void Adddangergoods(String str) {
        dangergoods.add(str);
        System.out.println(str + "加入危险品成功");
        System.out.println("当前危险品有"+ dangergoods);
    }
    public void Movedangergoods(String str) {
        if(dangergoods.contains(str)) {
        dangergoods.remove(str);
        System.out.println("删除危险品" + str + "成功");
        System.out.println("当前危险品有"+ dangergoods);
        }
        else {
            System.out.println("没有这个危险品");
        }
    }
    
    public void checkBag(Goods goods)throws DangerException{
        try {
            if(dangergoods.contains(goods.getName())){
                throw new DangerException();
            }
        }catch(DangerException e) {
            e.toShow(goods.getName());
        }
        if(dangergoods.contains(goods.getName()) != true) {
            System.out.println(goods.getName() + "不是危险品");
        }

    }
}
public class Goods {
     private String name;
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
        public Goods(String name) {
            this.name = name;
        }
        public Goods() {

        }
}
import java.util.*;
public class Test {

    public static void main(String[] args) {
         Goods name = new Goods();
            Machine machine = new Machine();
            Scanner in = new Scanner(System.in);
            Scanner gs = new Scanner(System.in);
            while(true) {
                System.out.println("输入A检查，B增加，C删除，D退出");
                
                String d = in.nextLine();
                switch(d) {
                case "A":{
                    System.out.println("请输入要检查的物品");
                    String c = gs.nextLine();
                    name.setName(c);
                    try {
                        machine.checkBag(name);
                    } catch (DangerException e) {
                        System.err.println(name.getName());
                        
                    }
                    
                    break;
                }
                case "B":{
                    System.out.println("请输入要增加的危险品");
                    String str = gs.nextLine();
                    machine.Adddangergoods(str);
                    
                    break;
                }
                case "C":{
                    System.out.println("请输入要删除的危险品");
                    String str = gs.nextLine();
                    machine.Movedangergoods(str);
                    
                    break;
                }
                case "D":{
                    System.exit(0);
                    
                    break;
                }
                default:{
                    System.out.println("输入错误，请重新输入！");
                    
                    break;
                }
                }
                if(d == "D") {
                    
                    break;
                }
            
        }
            in.close();
            gs.close();
        }

    

}