import java.util.*;
import java.io.*;
public class L4_2
{
public static void main(String[] args) throws Exception
{
Spgl shipin=new Spgl();
BufferedReader sr=new BufferedReader(new InputStreamReader(System.in));
while(true)
{
System.out.println("请按提示选择以下功能");
System.out.println("添加食品请按1");
System.out.println("查找食品信息请按2");
System.out.println("修改食品价格请按3");
System.out.println("删除食品请按4");
System.out.println("退出请按0");
String str=sr.readLine();
if(str.equals("1"))
{
System.out.println("请输入食品编号");
String bh=sr.readLine();
System.out.println("请输入食品名称");
String mc=sr.readLine();
System.out.println("请输入食品价格");
float jg=Float.parseFloat(sr.readLine());
Sp sp=new Sp(bh,mc,jg);
shipin.addsp(sp);
}
else if(str.equals("2"))
{
System.out.println("请输入食品编号");
String bh=sr.readLine();
shipin.spxx(bh);
}
else if(str.equals("3"))
{
System.out.println("请输入食品编号");
String bh=sr.readLine();
System.out.println("请输入新的价格");
float jg=Float.parseFloat(sr.readLine());
shipin.spjg(bh,jg);
}
else if(str.equals("4"))
{
System.out.println("请输入食品编号");
String bh=sr.readLine();
shipin.delsp(bh);
}
else if(str.equals("0"))
{
System.out.println("感谢您的使用，再见");
System.exit(0);
}
else
{
System.out.println("输入有误");
}
}
}
}
class Spgl
{
private ArrayList aa=null;
Spgl()
{
aa=new ArrayList();
}
public void addsp(Sp sp)
{
aa.add(sp);
System.out.println("添加新食品成功！");
}
public void spxx(String bh)
{
int i;
for(i=0;i<aa.size();i++)
{
Sp sp=(Sp)aa.get(i);
if(sp.getBianhao().equals(bh))
{
System.out.println("该食品的信息为：");
System.out.println("食品编号："+bh);
System.out.println("食品名称："+sp.getMingcheng());
System.out.println("食品价格："+sp.getJiage());
break;
}
}
if(i==aa.size())
System.out.println("对不起，无此食品！");
}
public void spjg(String bh,float jg)
{
int i;
for(i=0;i<aa.size();i++)
{
Sp sp=(Sp)aa.get(i);
if(sp.getBianhao().equals(bh))
{
sp.setJiage(jg);
System.out.println("修改食品价格成功！");
break;
}
}
if(i==aa.size())
{
System.out.println("对不起，没有找到相应的食品，修改价格失败！");
}
}
public void delsp(String bh)
{
int i;
if(aa.size()==0)
{
System.out.println("对不起，仓库中已没有任何食品！");
}
for(i=0;i<aa.size();i++)
{
Sp sp=(Sp)aa.get(i);
if(sp.getBianhao().equals(bh))
{
aa.remove(i);
System.out.println("删除食品成功！");
break;
}
}
if((i==aa.size()) && (aa.size()!=0))
{
System.out.println("对不起，没有该食品！");
}
}
}
class Sp
{
private String bianhao;
private String mingcheng;
private float jiage;
Sp(String bianhao,String mingcheng,float jiage)
{
this.mingcheng=mingcheng;
this.bianhao=bianhao;;
this.jiage=jiage;;
}
public String getBianhao() {
return bianhao;
}
public void setBianhao(String bianhao) {
this.bianhao = bianhao;
}
public String getMingcheng() {
return mingcheng;
}
public void setMingcheng(String mingcheng) {
this.mingcheng = mingcheng;
}
public float getJiage() {
return jiage;
}
public void setJiage(float jiage) {
this.jiage = jiage;
}
}
集合类_集合类型_fpga_集合类_typical6ka_TheFirst_源码
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2021-10-01
03:31:42
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集合类.rar （7个子文件） 
集合类 
L4_7.java 955B L4_5.java 1KB L4_6.java 899B L4_1.java 2KB L4_3.java 983B L4_4.java 674B L4_2.java 4KB资源评论
