做的一个食品管理小程序，为何BUG如此之多？求分析 - 黑马程序员技术交流社区

import java.util.*;
import java.io.*;
class sp{
private String biaohao;
private String name;
private float jiage;
sp(String biaohao,String name,float jiage){
this.biaohao=biaohao;
this.name=name;
this.jiage=jiage;
}
public String getbiaohao(){
return biaohao;
}
public void setbiaohao(String biaohao){
this.biaohao=biaohao;
}
public String getname(){
return biaohao;
}
public void setname(String name){
this.name=name;
}
public float getjiage(){
return jiage;
}
public void setjiage(float jiage){
this.jiage=jiage;
}
}
class spgl{
private ArrayList aa=null;
spgl(){
aa=new ArrayList();
}
public void addsp(sp pp){
aa.add(pp);
System.out.println("添加新食品成功啦");
}
public void spxx(String biaohao){
int i;
for(i=0;i<aa.size();i++){
sp pp=(sp)aa.get(i);
if(pp.getbiaohao().equals(biaohao)){
System.out.println("该食品编号为"+pp.getbiaohao());
System.out.println("该食品名称为"+pp.getname());
System.out.println("该食品价格为"+pp.getjiage());
break;
}
}
if(i==aa.size()){
System.out.println("输入食品信息有误");
}
}
public void spjg(String biaohao){
int j;
for(j=0;j<aa.size();j++){
sp pp=(sp)aa.get(j);
if(pp.getbiaohao().equals(biaohao)){
System.out.println("当前食品价格为"+pp.getjiage()+"请输入修改价格");
Scanner in=new Scanner(System.in);
int b=in.nextInt();
pp.setjiage(b);
break;
}
}
if(j==aa.size()){
System.out.println("输入食品信息有误");
}
}
public void spsc(String biaohao){
int i;
for(i=0;i<aa.size();i++){
sp ss=(sp)aa.get(i);
if(ss.getbiaohao().equals(biaohao)){
aa.remove(i);
System.out.println("食品已经删除");
break;
}
}
if(i==aa.size()){
System.out.println("食品不存在请重新输入");
}
}
}
public class ship
{
public static void main(String[] args) throws Exception
{
int x;
spgl ab=new spgl();
BufferedReader sr=new BufferedReader(new InputStreamReader(System.in));
do{
System.out.println("添加食品信息请按1\n查找食品信息请按2\n修改食品价格请按3\n删除食品请按4\n退出请按0");
String s=sr.readLine();
x=Integer.parseInt(s);
if(x==1){
System.out.println("请输入物品编号");
String biaohao=sr.readLine();
System.out.println("请输入物品名称");
String name=sr.readLine();
System.out.println("请输入物品价格");
float jiage=sr.read();
sp a=new sp(biaohao,name,jiage);
ab.addsp(a);
continue;
}
if(x==2){
System.out.println("请输入查询物品的编号");
String bb=sr.readLine();
ab.spxx(bb);
}
if(x==3)
{
System.out.println("请输入修改物品的编号");
String bb=sr.readLine();
ab.spjg(bb);
}
if(x==4)
{
System.out.println("请输入想要删除的食品编号");
String bb=sr.readLine();
ab.spsc(bb);
}
}while(x!=0);
System.out.println("谢谢使用");
sr.close();
}
}

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public class Sp {
private String biaohao;
private String name;
private float jiage;
Sp(String biaohao,String name,float jiage){
this.biaohao=biaohao;
this.name=name;
this.jiage=jiage;
}
public String getbiaohao(){
return biaohao;
}
public void setbiaohao(String biaohao){
this.biaohao=biaohao;
}
public String getname(){
return biaohao;
}
public void setname(String name){
this.name=name;
}
public float getjiage(){
return jiage;
}
public void setjiage(float jiage){
this.jiage=jiage;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((biaohao == null) ? 0 : biaohao.hashCode());
result = prime * result + Float.floatToIntBits(jiage);
result = prime * result + ((name == null) ? 0 : name.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Sp other = (Sp) obj;
if (biaohao == null) {
if (other.biaohao != null)
return false;
} else if (!biaohao.equals(other.biaohao))
return false;
if (Float.floatToIntBits(jiage) != Float.floatToIntBits(other.jiage))
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
return true;
}
}
[code]public class Spgl {
private ArrayList aa = null;
Spgl() {
aa = new ArrayList();
}
public void addsp(Sp pp) {
aa.add(pp);
System.out.println("添加新食品成功啦");
}
public void spxx(String biaohao) {
int i;
for (i = 0; i < aa.size(); i++) {
Sp pp = (Sp) aa.get(i);
if (pp.getbiaohao().equals(biaohao)) {
System.out.println("该食品编号为" + pp.getbiaohao());
System.out.println("该食品名称为" + pp.getname());
System.out.println("该食品价格为" + pp.getjiage());
break;
}
}
if (i == aa.size()) {
System.out.println("输入食品信息有误");
}
}
public void spjg(String biaohao) {
int j;
for (j = 0; j < aa.size(); j++) {
Sp pp = (Sp) aa.get(j);
if (pp.getbiaohao().equals(biaohao)) {
System.out.println("当前食品价格为" + pp.getjiage() + "请输入修改价格");
Scanner in = new Scanner(System.in);
float b = in.nextFloat();
pp.setjiage(b);
System.out.println("修改成功");
break;
}
}
if (j == aa.size()) {
System.out.println("输入食品信息有误");
}
}
public void spsc(String biaohao) {
int i;
for (i = 0; i < aa.size(); i++) {
Sp ss = (Sp) aa.get(i);
if (ss.getbiaohao().equals(biaohao)) {
aa.remove(i);
System.out.println("食品已经删除");
break;
}
}
if (i == aa.size()) {
System.out.println("食品不存在请重新输入");
}
}
}
[code]public class Ship {
public static void main(String[] args) throws Exception {
int x;
Spgl ab = new Spgl();
BufferedReader sr = new BufferedReader(new InputStreamReader(System.in));
do {
System.out.println("添加食品信息请按1\n查找食品信息请按2\n修改食品价格请按3\n删除食品请按4\n退出请按0\n");
String s = sr.readLine();
x = Integer.parseInt(s);
if (x == 1) {
System.out.println("请输入物品编号");
String biaohao = sr.readLine();
System.out.println("请输入物品名称");
String name = sr.readLine();
System.out.println("请输入物品价格");
String s2 = sr.readLine();
float jiage =Float.parseFloat(s2);//这里修改了。
Sp a = new Sp(biaohao, name, jiage);
ab.addsp(a);
//continue;
}
if (x == 2) {
System.out.println("请输入查询物品的编号");
String bb = sr.readLine();
ab.spxx(bb);
}
if (x == 3) {
System.out.println("请输入修改物品的编号");
String bb = sr.readLine();
ab.spjg(bb);
}
if (x == 4) {
System.out.println("请输入想要删除的食品编号");
String bb = sr.readLine();
ab.spsc(bb);
}
} while (x != 0);
System.out.println("谢谢使用");
sr.close();
}
}

复制代码