Java程序編寫(xiě)--網(wǎng)吧結(jié)賬時(shí)的計(jì)費(fèi)界面

import java.awt.BorderLayout;

10多年專注成都網(wǎng)站制作，企業(yè)網(wǎng)站設(shè)計(jì)，個(gè)人網(wǎng)站制作服務(wù)，為大家分享網(wǎng)站制作知識(shí)、方案，網(wǎng)站設(shè)計(jì)流程、步驟,成功服務(wù)上千家企業(yè)。為您提供網(wǎng)站建設(shè),網(wǎng)站制作,網(wǎng)頁(yè)設(shè)計(jì)及定制高端網(wǎng)站建設(shè)服務(wù),專注于企業(yè)網(wǎng)站設(shè)計(jì),高端網(wǎng)頁(yè)制作,對(duì)紙箱等多個(gè)領(lǐng)域，擁有多年建站經(jīng)驗(yàn)。

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.WindowConstants;

import javax.swing.table.DefaultTableModel;

import javax.swing.table.TableModel;

import javax.swing.SwingUtilities;

public class TestFrame extends javax.swing.JFrame {

private JScrollPane jScrollPane1;

private JTable jTable1;

/**

* Auto-generated main method to display this JFrame

*/

public static void main(String[] args) {

SwingUtilities.invokeLater(new Runnable() {

public void run() {

TestFrame inst = new TestFrame();

inst.setLocationRelativeTo(null);

inst.setVisible(true);

}

});

}

public TestFrame() {

super();

initGUI();

}

private void initGUI() {

try {

setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);

{

jScrollPane1 = new JScrollPane();

getContentPane().add(jScrollPane1, BorderLayout.CENTER);

{

TableModel jTable1Model =

new DefaultTableModel(

new String[][] { {"","",""},{} ,{} ,{} },

new String[] { "上網(wǎng)總時(shí)間", "上網(wǎng)花費(fèi)金額" ,"上網(wǎng)單價(jià)"});

jTable1 = new JTable();

jScrollPane1.setViewportView(jTable1);

jTable1.setModel(jTable1Model);

}

}

pack();

setSize(400, 300);

} catch (Exception e) {

e.printStackTrace();

}

}

}

java新手求大神解答。主要求代碼，有思路但是寫(xiě)不出啊。

import?java.util.HashMap;

import?java.util.Iterator;

import?java.util.Map;

import?java.util.Scanner;

enum?Huo?{

TX(1,?"T恤",?245),?WQX(2,?"網(wǎng)球鞋",?570),?WQP(3,?"網(wǎng)球拍",?320);

private?int?id;

private?String?name;

private?double?price;

private?Huo(int?id,?String?name,?double?price)?{

this.id?=?id;

this.name?=?name;

this.price?=?price;

}

public?int?getId()?{

return?id;

}

public?String?getName()?{

return?name;

}

public?double?getPrice()?{

return?price;

}

public?static?Huo?getById(int?id)?{

for?(Huo?item?:?Huo.values())?{

if?(item.id?==?id)?{

return?item;

}

}

return?null;

}

}

public?class?Test?{

private?static?MapInteger,?Integer?countMap?=?new?HashMapInteger,?Integer();

private?static?double?sum?=?0;

public?static?void?main(String?args[])?{

Scanner?in?=?new?Scanner(System.in);

while?(true)?{

System.out.println("**********************************************");

System.out.println("請(qǐng)選擇購(gòu)買的商品編號(hào)：");

for?(Huo?item?:?Huo.values())?{

System.out.print(item.getId()?+?":"?+?item.getName()?+?"??");

}

System.out.println();

System.out.println("**********************************************");

System.out.print("輸入購(gòu)買商品編號(hào):");

int?id?=?in.nextInt();

System.out.print("輸入購(gòu)買商品數(shù)量:");

int?count?=?in.nextInt();

Integer?tmp?=?countMap.get(id);

if?(tmp?==?null)?{

tmp?=?0;

}

countMap.put(id,?tmp?+?count);

show();

while?(true)?{

System.out.print("是否繼續(xù)（y/n）：");

String?jixu?=?in.next();

if?("Y".equalsIgnoreCase(jixu))?{

break;

}?else?if?("N".equalsIgnoreCase(jixu))?{

System.out.print("請(qǐng)支付:");

double?zhifu?=?in.nextDouble();

System.out.println("應(yīng)付金額："?+?sum);

System.out.println("客戶支付："?+?zhifu);

System.out.println("找錢:"?+?(zhifu?-?sum));

System.exit(0);

}?else?{

System.out.print("輸入錯(cuò)誤");

}

}

}

}

private?static?void?show()?{

IteratorInteger?it?=?countMap.keySet().iterator();

while?(it.hasNext())?{

Integer?key?=?it.next();

Integer?count?=?countMap.get(key);

Huo?huo?=?Huo.getById(key);

double?heji?=?huo.getPrice()?*?count;

System.out.println(huo.getName()?+?"￥"?+?huo.getPrice()?+?"???數(shù)量:"?+?count?+?"????合計(jì):"?+?heji);

sum?+=?heji;

}

}

}

（OOP）求一個(gè)結(jié)賬的Java代碼啊，要求客戶可以從菜單里面選擇物品，最后結(jié)賬在控制臺(tái)。

public class Test {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String str = "";

while(true) {

System.out.println("請(qǐng)輸入一個(gè)字符：");

str = sc.nextLine();

if(str=="exit") // 如果字符串為"exit"，退出循環(huán)

break;

if(str.length()==1) {

char c = str.charAt(0);

System.out.println("它對(duì)應(yīng)的ASCII碼為：" + (int)c); //(int)c將c強(qiáng)制轉(zhuǎn)換為它的ascii碼

}

else

System.out.println("請(qǐng)輸入一位字符。");

}

sc.close();

}

}

用Java寫(xiě)一個(gè)簡(jiǎn)單的程序 使用for和while的嵌套循環(huán)語(yǔ)句，寫(xiě)一個(gè)模擬結(jié)賬

import?java.util.Scanner;

public?class?JieZhang?{

public?static?void?main(String[]?args)?{

System.out.println("請(qǐng)輸入要結(jié)賬的顧客數(shù)：");

Scanner?s?=?new?Scanner(System.in);

int?num?=?s.nextInt();

for(int?i=0;inum;i++){

int?flag?=?1;

double?sum?=?0;//總價(jià)

while(flag==1){

flag?=?1;

System.out.println("請(qǐng)輸入單價(jià)：");

double?price?=?s.nextDouble();

System.out.println("請(qǐng)輸入數(shù)量：");

int?number?=?s.nextInt();

sum?=?sum?+?price?*?number;

System.out.println("請(qǐng)選擇是否繼續(xù)計(jì)算：1繼續(xù)");

flag?=?s.nextInt();

}

System.out.println("第"+(i+1)+"位顧客消費(fèi)："+sum);

}

}

}

Java購(gòu)物結(jié)算，卡在不懂do...while跳出循環(huán)和最后的總金額。求解決，謝謝

剛幫你調(diào)測(cè)了一下，當(dāng)你輸入"n"的時(shí)候，已經(jīng)跳出循環(huán)了，只不過(guò)你沒(méi)有輸出提示，以為沒(méi)出來(lái)，

又輸入字符了所有報(bào)錯(cuò)了，應(yīng)該是輸入金額的，我?guī)湍慵恿讼螺敵瞿憧梢钥聪陆Y(jié)果；

public static void main(String args[]){

System.out.println("********************");

System.out.println("");

System.out.println("請(qǐng)選擇購(gòu)買商品編號(hào)：");

System.out.println("1.T恤(￥245.0) 網(wǎng)球鞋(￥570.0) 網(wǎng)球拍(￥500.0)");

System.out.println("********************");

System.out.println("");

double s=0;

String d;

do{

System.out.println("請(qǐng)輸入商品編號(hào)：");

Scanner input=new Scanner(System.in);

int a=input.nextInt();

if(a==1){

System.out.println("請(qǐng)輸入購(gòu)買數(shù)量：");

int b=input.nextInt();

double c=245*b;

System.out.println("T恤￥245.0 數(shù)量:"+b+" "+"合計(jì):"+c);

s=s+c;

}

else if(a==2){

System.out.println("請(qǐng)輸入購(gòu)買數(shù)量：");

int b=input.nextInt();

double c=570*b;

System.out.println("網(wǎng)球鞋￥245.0 數(shù)量:"+b+" "+"合計(jì):"+c);

s=s+c;

}

else if(a==3){

System.out.println("請(qǐng)輸入購(gòu)買數(shù)量：");

int b=input.nextInt();

double c=500*b;

System.out.println("網(wǎng)球拍￥245.0 數(shù)量:"+b+" "+"合計(jì):"+c);

s=s+c;

}

else {System.out.println("無(wú)此商品");}

System.out.println("否繼續(xù)(y/n)");

d=input.next();

}while(d.equals("y"));

System.out.println("===========付款===========");

System.out.println("=====輸入金額=====");

Scanner input=new Scanner(System.in);

int x=input.nextInt();

double m=s*0.8;

System.out.println("折扣：0.8");

System.out.println("應(yīng)付金額："+m);

System.out.println("實(shí)際金額："+x);

double p=x-m;

System.out.println("找錢："+p);

}