简单订单系统实现java源代码

package txt_2; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; public class thingsManange { int cnt=0; public static final String k[][]={{"a->添加"},{"e->显示"},{"x->修改"},{"c->出售"},{"f->查询"},{"q->返回上菜单"}}; /** * @param args * @throws IOException */ public static void main(String[] args) throws IOException { // TODO Auto-generated method stub } public void setthingsManangeMenu() throws IOException{ BufferedReader sc = new BufferedReader(new InputStreamReader(System.in)); boolean goon=true; for(int i=0;i<k.length;i++){ System.out.println(k[i][0]); } while (goon) { System.out.println("请输入命令："); String s = sc.readLine(); char ch = s.charAt(0); switch (ch) { case 'a': addThings(); break; case 'e': displayThings(); break; case 'x': changThings(); break; case 'c': outThings(); break; case 'f': findThings(); break; case 'q': goon=false; for(int i=0;i<MainMenu.m.length;i++){ System.out.println(MainMenu.m[i][0]); } break; default : System.out.println("输入命令有误！"); } } } // 添加商品 List<Things> list=new ArrayList<Things>(); public List<Things> getThings() { return list; } Things thin[]=new Things[100]; public void addThings() throws IOException{ BufferedReader bu=new BufferedReader(new InputStreamReader(System.in)); Things t=new Things(); System.out.println("请输入商品编号："); t.setId(bu.readLine()); System.out.println("请输入商品名："); t.setName(bu.readLine()); System.out.println("请输入商品单价格："); t.setPrice(new Float(bu.readLine())); System.out.println("请输入商品数量："); t.setCount(new Integer(bu.readLine())); System.out.println("请输入商品产商名："); t.setProductor(bu.readLine()); thin[cnt]=t; list.add(thin[cnt]); cnt++; System.out.println("添加成功！"); } //修改商品 public void changThings() { System.out.println("请输入需要修改的商品编号："); try { BufferedReader bu=new BufferedReader(new InputStreamReader(System.in)); String s=bu.readLine(); boolean goon=false; for(int i=0;i<list.size();i++){ if((thin[i].getId()).equals(s)){ int m=i; System.out.println("请重新输入商品名："); thin[m].setName(bu.readLine()); System.out.println("请重新输入商品单价："); thin[m].setPrice(new Float(bu.readLine())); System.out.println("请重新输入数量："); thin[m].setCount(new Integer(bu.readLine())); System.out.println("请输重新入产商："); thin[m].setProductor(bu.readLine()); System.out.println("修改成功！"); goon=true; break; } } if(!goon){ System.out.println("没有找到修改的编号！"); } } catch (NumberFormatException e) { } catch (IOException e) { } } //出售商品 int bum=0; int []a=new int[100]; int []b=new int[100]; public void outThings() throws IOException{ System.out.println("请输入需要出售的商品编号："); BufferedReader bu=new BufferedReader(new InputStreamReader(System.in)); String s=bu.readLine(); boolean goon=false; for(int i=0;i<list.size();i++){ if((thin[i].getId()).equals(s)){ int n=i; System.out.println("请输入需要出售此商品数量：："); int m=new Integer(bu.readLine()); a[bum]=n; b[bum]=m; bum++; goon=true; if(m<=thin[n].getCount()){ thin[n].setCount(thin[n].getCount()-m); System.out.println("出售成功！"); // System.out.println(thin[n].getId()+"\t"+thin[n].getName() // +"\t"+thin[n].getPrice()+"\t"+m // +"个\t"+(thin[n].getPrice()*m)+"元"); }else{ System.out.println("商品数量不够！"); } break; } } if(!goon){ System.out.println("没此编号！"); } } //查询商品 public void findThings() throws IOException{ System.out.println("请输入需要查询的商品编号："); BufferedReader bu=new BufferedReader(new InputStreamReader(System.in)); String s=bu.readLine(); boolean goon=false; for(int i=0;i<list.size();i++){ if((thin[i].getId()).equals(s)){ int n=i; System.out.println("编号:\t"+"姓名:\t"+"性别:\t"+"电话:\t\t"+"地址:"); System.out.println(thin[n].getId()+"\t"+thin[n].getName() +"\t"+thin[n].getPrice()+":\t"+thin[n].getCount() +"\t\t"+thin[n].getProductor()); System.out.println("查询成功！"); goon=true; break; } } if(!goon){ System.out.println("没此编号！"); } } //显示商品 public void displayThings(){ System.out.println("编号\t"+"商品名\t"+"单价\t"+"数量\t"+"产商"); for(Things d:list) System.out.println(d.getId()+"\t"+d.getName()+"\t"+d.getPrice() +"\t"+d.getCount()+"\t"+d.getProductor()); } public void show(){ for(int i=0;i<bum;i++){ System.out.println(thin[a[i]].getId()+"\t"+thin[a[i]].getName() +"\t"+thin[a[i]].getPrice()+"\t"+b[i] +"\t"+(thin[a[i]].getPrice()*b[i])+"元"); } } public float sum(){ float su=0; for(int i=0;i<bum;i++){ su=su+(thin[a[i]].getPrice()*b[i]); } return su; } public int Num(){ int p=0; for(int i=0;i<bum;i++){ p+=b[i]; } return p; } }